Disable timer/keyboard trapping on GNU/Hurd for now Trapping disabled for now, as some VBIOSes (mga-g450 notably) use these ports, and the int10 wrapper is not emulating them. It's effectively what happens in the Linux variant too, as iopl() is used there, making the ioperm() meaningless. Signed-off-by: Olaf Buddenhagen <antrik@users.sf.net> Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com>
156 lines
4.6 KiB
C
156 lines
4.6 KiB
C
/*
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* Copyright 1997, 1998 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 "input.h"
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#include "scrnintstr.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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#include "xf86OSpriv.h"
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/**************************************************************************
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* Video Memory Mapping section
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***************************************************************************/
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static pointer
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mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int Flags)
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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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kern_return_t err;
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vm_address_t addr=(vm_address_t)0;
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err = get_privileged_ports (NULL, &device);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't get_privileged_ports. (%s)\n",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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{
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errno = err;
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FatalError("xf86MapVidMem() can't device_open. (%s)\n",strerror(errno));
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}
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err = device_map(mem_dev,VM_PROT_READ|VM_PROT_WRITE, Base , Size ,&mem_obj,0);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() 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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Size,
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0, /* mask */
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TRUE, /* anywhere */
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mem_obj,
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(vm_offset_t)Base,
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FALSE, /* copy on write */
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VM_PROT_READ|VM_PROT_WRITE,
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VM_PROT_READ|VM_PROT_WRITE,
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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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{
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errno = err;
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FatalError("xf86MapVidMem() can't vm_map.(mem_obj) (%s)\n",strerror(errno));
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}
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mach_port_deallocate(mach_task_self(),mem_dev);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't mach_port_deallocate.(mem_dev) (%s)\n",strerror(errno));
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}
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return (pointer)addr;
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}
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static void
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unmapVidMem(int ScreenNum,pointer Base,unsigned long Size)
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{
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kern_return_t err = vm_deallocate(mach_task_self(), (int)Base, Size);
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if( err )
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{
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errno = err;
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ErrorF("xf86UnMapVidMem: can't dealloc framebuffer space (%s)\n",strerror(errno));
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}
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return;
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}
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/**************************************************************************
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* I/O Permissions section
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***************************************************************************/
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/*
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* Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
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* this.
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*/
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extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
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Bool
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xf86EnableIO()
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{
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if (ioperm(0, 0x10000, 1)) {
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FatalError("xf86EnableIO: ioperm() failed (%s)\n", strerror(errno));
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return FALSE;
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}
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#if 0
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/*
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* Trapping disabled for now, as some VBIOSes (mga-g450 notably) use these
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* ports, and the int10 wrapper is not emulating them. (Note that it's
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* effectively what happens in the Linux variant too, as iopl() is used
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* there, making the ioperm() meaningless.)
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*
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* Reenable this when int10 gets fixed. */
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ioperm(0x40,4,0); /* trap access to the timer chip */
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ioperm(0x60,4,0); /* trap access to the keyboard controller */
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#endif
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return TRUE;
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}
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void
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xf86DisableIO()
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{
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ioperm(0,0x10000,0);
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return;
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}
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = TRUE;
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pVidMem->mapMem = mapVidMem;
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pVidMem->unmapMem = unmapVidMem;
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pVidMem->initialised = TRUE;
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}
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