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/*
* ibcs/vtkd.c
*
* This provides internal emulation support for the SCO <sys/vtkd.h> on
* the multiscreen console. More or less, this involves translating the
* input ioctl()'s into a similar Linux ioctl()'s.
*
* Not emulated SCO multiscreen functions:
* None.
*
* Not emulated SCO keyboard functions:
* KIOCDOSMODE set DOSMODE
* KIOCNONDOSMODE unset DOSMODE
* KDDISPINFO get display start and size
* KDGKBSTATE get state of keyboard shift keys
*
* Written by Scott Michel, scottm@intime.com
* (c) 1994 Scott Michel as part of the Linux iBCS-2 emulator project.
*
* $Id: vtkd.c,v 1.5 1995/04/12 10:12:37 mike Exp $
* $Source: /usr/CVS/ibcs/iBCSemul/vtkd.c,v $
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/version.h>
#include <asm/segment.h>
#ifndef KERNEL_DS
#include <linux/segment.h>
#endif
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/vt.h>
#include <linux/kd.h>
#include <ibcs/ibcs.h>
#include <ibcs/trace.h>
static struct {
int in_ioctl; /* only lower 8 bits */
int out_ioctl; /* Linux version */
} trantab[] = {
#ifdef KDDISPTYPE
{ 1, KDDISPTYPE },
#endif
{ 2, KDMAPDISP },
{ 3, KDUNMAPDISP },
{ 6, KDGKBMODE },
{ 7, KDSKBMODE },
{ 8, KDMKTONE },
{ 9, KDGETMODE },
{ 10, KDSETMODE },
{ 11, KDADDIO },
{ 12, KDDELIO },
{ 60, KDENABIO },
{ 61, KDDISABIO },
#ifdef KIOCINFO
{ 62, KIOCINFO },
#endif
{ 63, KIOCSOUND },
{ 64, KDGKBTYPE },
{ 65, KDGETLED },
{ 66, KDSETLED },
};
/*--------------------------------------------------------------------------
* ibcs_ioctl_vtkd()
*------------------------------------------------------------------------*/
int
ibcs_ioctl_vtkd(int fd, int todo, void *arg)
{
int gen = (todo >> 8) & 0xff, spec = todo & 0xff;
int newf;
if (gen == 'v') {
/* Could make this translation process table based, but, why
waste the valuable kernel space? */
newf = (spec == 1 ? VT_OPENQRY :
(spec == 2 ? VT_SETMODE :
(spec == 3 ? VT_GETMODE :
(spec == 4 ? VT_RELDISP :
(spec == 5 ? VT_ACTIVATE : -1)))));
if (newf != -1)
return SYS(ioctl)(fd, newf, arg);
} else if (gen == 'K') {
register unsigned int i;
for (i = 0; i < sizeof(trantab) / sizeof(trantab[0]); ++i) {
if (spec == trantab[i].in_ioctl)
return SYS(ioctl)(fd, trantab[i].out_ioctl, arg);
}
}
printk(KERN_ERR "iBCS: vtkd ioctl 0x%02x unsupported\n", todo);
return -EINVAL;
}
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