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NetBSD/sys/arch/i386/isa/pcvt/pcvt_drv.c
mycroft 57e1130ccc Fix timeout stuff.
1994-05-05 11:11:25 +00:00

1145 lines
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/*
* Copyright (c) 1992,1993,1994 Hellmuth Michaelis, Brian Dunford-Shore,
* Joerg Wunsch and Scott Turner.
*
* Copyright (c) 1993 Charles Hannum.
*
* All rights reserved.
*
* Parts of this code regarding the NetBSD interface were written
* by Charles Hannum.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz and Don Ahn.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by
* Hellmuth Michaelis, Brian Dunford-Shore, Joerg Wunsch, Scott Turner
* and Charles Hannum.
* 4. The name authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* @(#)pcvt_drv.c, 3.00, Last Edit-Date: [Sun Feb 27 17:04:52 1994]
*
*/
/*---------------------------------------------------------------------------*
*
* pcvt_drv.c VT220 Driver Main Module / OS - Interface
* ---------------------------------------------------------
* -jw include rather primitive X stuff
* -hm added netbsd 0.8 support
* -hm NetBSD-current support
* -hm converting to memory mapped virtual screens
* -hm 132 column support for vga's
* -hm new pcstart debugging
* -hm 132 columns for WD90C11
* -hm netbsd 9.0 alpha / new tty subsystem
* -jw set CLOCAL in pcopen, a bug must be somewhere else ...
* -hm pcprobe moved back into this file
* -hm vga_string routine
* -hm keybord security built into XSERVER part
* -jw USL VT compatibility
* -hm adding bugfixes from joerg for non USL VT X server
* -hm superprobe compatibility patch from joerg
* -hm support for keyboard scancode sets 1 and 2
* -jw mouse emulation mode
* -jw/hm all ifdef's converted to if's
* -hm bugfix from Joerg for pcrint(), wrong openf tested.
* removed pcxint(), because it's really not needed.
* -hm applied patches from John Brezak and Szabolcs Szigeti
* for recent NetBSD-current differences
* -hm patch from Michael Havemester for NetBSD-current 12/02/94
* -hm ------------ Release 3.00 --------------
*
*---------------------------------------------------------------------------*/
#include "vt.h"
#if NVT > 0
#define EXTERN /* allocate mem */
#include "pcvt_hdr.h" /* global include */
unsigned __debug = 0; /*0xffe */;
static __color;
static nrow;
static void vgapelinit(void); /* read initial VGA DAC palette */
#if defined XSERVER && !PCVT_USL_VT_COMPAT
static int pcvt_xmode_set(int on, struct proc *p); /* initialize for X mode */
#endif /* XSERVER && !PCVT_USL_VT_COMPAT */
#define DPAUSE 1
int
#if PCVT_NETBSD > 9
pcprobe(struct device *parent, struct device *self, void *aux)
#else
pcprobe(struct isa_device *dev)
#endif
{
kbd_code_init();
#if PCVT_NETBSD > 9
((struct isa_attach_args *)aux)->ia_iosize = 16;
return 1;
#else
#if PCVT_NETBSD || PCVT_FREEBSD
return (16);
#else
return 1;
#endif /* PCVT_NETBSD || PCVT_FREEBSD */
#endif /* PCVT_NETBSD > 9 */
}
#if PCVT_NETBSD > 9
void
pcattach(struct device *parent, struct device *self, void *aux)
{
struct isa_attach_args *ia = aux;
static struct intrhand vthand;
#else
int
pcattach(struct isa_device *dev)
{
#endif
int i;
vt_coldmalloc(); /* allocate memory for screens */
#if PCVT_NETBSD || PCVT_FREEBSD
#if PCVT_NETBSD > 9
printf(": ");
#else
printf("vt%d: ", dev->id_unit);
#endif
switch(adaptor_type)
{
case MDA_ADAPTOR:
printf("mda");
break;
case CGA_ADAPTOR:
printf("cga");
break;
case EGA_ADAPTOR:
printf("ega");
break;
case VGA_ADAPTOR:
printf("%s, ", (char *)vga_string(vga_type));
if(can_do_132col)
printf("80/132 col");
else
printf("80 col");
vgapelinit();
break;
default:
printf("unknown");
break;
}
if(color == 0)
printf(", mono");
else
printf(", color");
printf(", %d scr, ", totalscreens);
switch(keyboard_type)
{
case KB_AT:
printf("at-");
break;
case KB_MFII:
printf("mf2-");
break;
default:
printf("unknown ");
break;
}
printf("kbd, [R%s]\n", PCVT_REL);
#if PCVT_NETBSD
for(i = 0; i < totalscreens; i++)
{
pc_tty[i] = ttymalloc();
vs[i].vs_tty = pc_tty[i];
}
#if PCVT_EMU_MOUSE
pc_tty[totalscreens] = ttymalloc(); /* the mouse emulator tty */
#endif /* PCVT_EMU_MOUSE */
pcconsp = pc_tty[0];
#endif /* PCVT_NETBSD */
#else /* !PCVT_NETBSD && !PCVT_FREEBSD*/
switch(adaptor_type)
{
case MDA_ADAPTOR:
printf(" <mda");
break;
case CGA_ADAPTOR:
printf(" <cga");
break;
case EGA_ADAPTOR:
printf(" <ega");
break;
case VGA_ADAPTOR:
printf(" <%s,", (char *)vga_string(vga_type));
if(can_do_132col)
printf("80/132 col");
else
printf("80 col");
vgapelinit();
break;
default:
printf(" <unknown");
break;
}
if(color == 0)
printf(",mono");
else
printf(",color");
printf(",%d scr,", totalscreens);
switch(keyboard_type)
{
case KB_AT:
printf("at-");
break;
case KB_MFII:
printf("mf2-");
break;
default:
printf("unknown ");
break;
}
printf("kbd,[R%s]>", PCVT_REL);
#endif /* PCVT_NETBSD || PCVT_FREEBSD */
#if !PCVT_NETBSD
for(i = 0; i < totalscreens; i++)
vs[i].vs_tty = &pccons[i];
#endif /* !PCVT_NETBSD */
async_update(0); /* start asynchronous updates */
#if PCVT_NETBSD > 9
vthand.ih_fun = pcrint;
vthand.ih_arg = 0;
vthand.ih_level = IPL_TTY;
intr_establish(ia->ia_irq, &vthand);
#else
return 1;
#endif
}
/* had a look at the friedl driver */
#if !PCVT_NETBSD
struct tty *
get_pccons(Dev_t dev)
{
register int i = minor(dev);
#if PCVT_EMU_MOUSE
if(i == totalscreens)
return(&pccons[i]);
#endif /* PCVT_EMU_MOUSE */
if(i >= PCVT_NSCREENS)
return(NULL);
return(&pccons[i]);
}
#else
struct tty *
get_pccons(Dev_t dev)
{
register int i = minor(dev);
#if PCVT_EMU_MOUSE
if(i == totalscreens)
return(pc_tty[i]);
#endif /* PCVT_EMU_MOUSE */
if(i >= PCVT_NSCREENS)
return(NULL);
return(pc_tty[i]);
}
#endif /* !PCVT_NETBSD */
/*---------------------------------------------------------------------------*
* /dev/ttyc0, /dev/ttyc1, etc.
*---------------------------------------------------------------------------*/
int
pcopen(Dev_t dev, int flag, int mode, struct proc *p)
{
register struct tty *tp;
register struct video_state *vsx;
int i = minor(dev);
#if PCVT_EMU_MOUSE
if(i == totalscreens)
vsx = 0;
else
#endif /* PCVT_EMU_MOUSE */
vsx = &vs[i];
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
#if PCVT_EMU_MOUSE
if(i == totalscreens)
{
if(mouse.opened == 0)
mouse.buttons = mouse.extendedseen =
mouse.breakseen = mouse.lastmove.tv_sec = 0;
mouse.minor = i;
mouse.opened++;
}
else
#endif /* PCVT_EMU_MOUSE */
vsx->openf++;
tp->t_oproc = pcstart;
tp->t_param = pcparam;
tp->t_dev = dev;
if ((tp->t_state & TS_ISOPEN) == 0)
{
tp->t_state |= TS_WOPEN;
ttychars(tp);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
pcparam(tp, &tp->t_termios);
ttsetwater(tp);
}
else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
return (EBUSY);
tp->t_state |= TS_CARR_ON;
tp->t_cflag |= CLOCAL; /* cannot be a modem (:-) */
#if PCVT_NETBSD
return ((*linesw[tp->t_line].l_open)(dev, tp));
#else
return ((*linesw[tp->t_line].l_open)(dev, tp, flag));
#endif
}
int
pcclose(Dev_t dev, int flag, int mode, struct proc *p)
{
register struct tty *tp;
register struct video_state *vsx;
int i = minor(dev);
#if PCVT_EMU_MOUSE
if(i == totalscreens)
vsx = 0;
else
#endif /* PCVT_EMU_MOUSE */
vsx = &vs[i];
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
(*linesw[tp->t_line].l_close)(tp, flag);
ttyclose(tp);
#if PCVT_EMU_MOUSE
if(i == totalscreens)
mouse.opened = 0;
else
#endif /* PCVT_EMU_MOUSE */
vsx->openf = 0;
#if PCVT_USL_VT_COMPAT
#if PCVT_EMU_MOUSE
if(i == totalscreens)
return (0);
#endif /* PCVT_EMU_MOUSE */
if(vsx->vt_status & VT_WAIT_ACT)
wakeup((caddr_t)&vsx->smode);
vsx->proc = 0;
vsx->vt_status = vsx->pid = 0;
vsx->smode.mode = VT_AUTO;
#endif /* PCVT_USL_VT_COMPAT */
return(0);
}
int
pcread(Dev_t dev, struct uio *uio, int flag)
{
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
#if PCVT_FORCE8BIT
/* this does not belong to here, but anybody always wants to
strip the 8th bit, very likely the shell */
tp->t_iflag &= ~ISTRIP;
#endif /* PCVT_FORCE8BIT */
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
}
int
pcwrite(Dev_t dev, struct uio *uio, int flag)
{
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return ENXIO;
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
}
int
pcioctl(Dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
{
register error;
register struct tty *tp;
if((tp = get_pccons(dev)) == NULL)
return(ENXIO);
/* note that some ioctl's are global, e.g. KBSTPMAT: There is
* only one keyboard and different repeat rates for instance between
* sessions are a suspicious wish. If you really need this make the
* appropriate variables arrays
*/
#if PCVT_EMU_MOUSE
if(minor(dev) == totalscreens)
{
if((error = mouse_ioctl(dev, cmd, data)) >= 0)
return error;
goto do_standard;
}
#endif /* PCVT_EMU_MOUSE */
#ifdef XSERVER
#if PCVT_USL_VT_COMPAT
if((error = usl_vt_ioctl(dev, cmd, data, flag, p)) >= 0)
return error;
/*
* just for compatibility:
* XFree86 < 2.0 and SuperProbe still might use it
*
* NB: THIS IS A HACK! Do not use it unless you explicitly need.
* Especially, since the vty is not put into process-controlled
* mode (this would require the application to co-operate), any
* attempts to switch vtys while this kind of X mode is active
* may cause serious trouble.
*/
switch(cmd)
{
case CONSOLE_X_MODE_ON:
{
int i;
if((error = usl_vt_ioctl(dev, KDENABIO, 0, flag, p)) > 0)
return error;
i = KD_GRAPHICS;
if((error = usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p))
> 0)
return error;
i = K_RAW;
error = usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p);
return error;
}
case CONSOLE_X_MODE_OFF:
{
int i;
(void)usl_vt_ioctl(dev, KDDISABIO, 0, flag, p);
i = KD_TEXT;
(void)usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p);
i = K_XLATE;
(void)usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p);
return 0;
}
case CONSOLE_X_BELL:
/*
* If `data' is non-null, it points to int[2], the first
* value denotes the pitch in Hz, the second a duration
* in ms (??? jw - 333 us). Otherwise, behaves like BEL.
*/
if (data)
sysbeep(PCVT_SYSBEEPF / ((int *)data)[0],
((int *)data)[1] * hz / 3000);
else
sysbeep(PCVT_SYSBEEPF / 1493, hz / 4);
return (0);
default: /* fall through */ ;
}
#else /* PCVT_USL_VT_COMPAT */
switch(cmd)
{
case CONSOLE_X_MODE_ON:
return pcvt_xmode_set(1, p);
case CONSOLE_X_MODE_OFF:
return pcvt_xmode_set(0, p);
case CONSOLE_X_BELL:
/*
* If `data' is non-null, it points to int[2], the first
* value denotes the pitch in Hz, the second a duration
* in ms (??? jw - 333 us). Otherwise, behaves like BEL.
*/
if (data)
sysbeep(PCVT_SYSBEEPF / ((int *)data)[0],
((int *)data)[1] * hz / 3000);
else
sysbeep(PCVT_SYSBEEPF / 1493, hz / 4);
return (0);
default: /* fall through */ ;
}
#endif /* PCVT_USL_VT_COMPAT */
#endif /* XSERVER */
if((error = kbdioctl(dev,cmd,data,flag)) >= 0)
return error;
if((error = vgaioctl(dev,cmd,data,flag)) >= 0)
return error;
do_standard:
if((error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p)) >= 0)
return (error);
if((error = ttioctl(tp, cmd, data, flag, p)) >= 0)
return (error);
return (ENOTTY);
}
int
pcmmap(Dev_t dev, int offset, int nprot)
{
if (offset > 0x20000)
return -1;
return i386_btop((0xa0000 + offset));
}
/*---------------------------------------------------------------------------*
*
* handle a keyboard receive interrupt
*
* NOTE: the keyboard is multiplexed by means of "pcconsp"
* between virtual screens. pcconsp - switching is done in
* the vgapage() routine
*
*---------------------------------------------------------------------------*/
int
pcrint(void)
{
u_char *cp;
#if PCVT_SCREENSAVER
pcvt_scrnsv_reset();
#endif /* PCVT_SCREENSAVER */
if((cp = sgetc(1)) == 0)
return -1;
if (kbd_polling)
return 1;
if(!(vs[current_video_screen].openf)) /* XXX was vs[minor(dev)] */
return 1;
#if PCVT_NULLCHARS
if(*cp == '\0')
{
/* pass a NULL character */
(*linesw[pcconsp->t_line].l_rint)('\0', pcconsp);
return 1;
}
#endif /* PCVT_NULLCHARS */
while (*cp)
(*linesw[pcconsp->t_line].l_rint)(*cp++ & 0xff, pcconsp);
return 1;
}
#if PCVT_NETBSD
void
pcstart(register struct tty *tp)
{
register struct clist *rbp;
int s, len, n;
u_char buf[PCVT_PCBURST];
s = spltty();
if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
goto out;
tp->t_state |= TS_BUSY;
splx(s);
/*
* We need to do this outside spl since it could be fairly
* expensive and we don't want our serial ports to overflow.
*/
rbp = &tp->t_outq;
while (len = q_to_b(rbp, buf, PCVT_PCBURST))
sput(&buf[0], 0, len, minor(tp->t_dev));
s = spltty();
tp->t_state &= ~TS_BUSY;
if (rbp->c_cc)
{
tp->t_state |= TS_TIMEOUT;
timeout(ttrstrt, tp, 1);
}
if (rbp->c_cc <= tp->t_lowat)
{
if (tp->t_state&TS_ASLEEP)
{
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)rbp);
}
selwakeup(&tp->t_wsel);
}
out:
splx(s);
}
#else /* !PCVT_NETBSD */ /* 386BSD 0.1 || FreeBSD */
void
pcstart(struct tty *tp)
{
int c, s;
s = spltty();
if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
{
goto out;
}
for(;;)
{
if (RB_LEN(&tp->t_out) <= tp->t_lowat)
{
if (tp->t_state&TS_ASLEEP)
{
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)&tp->t_out);
}
if (tp->t_wsel)
{
selwakeup(tp->t_wsel, tp->t_state & TS_WCOLL);
tp->t_wsel = 0;
tp->t_state &= ~TS_WCOLL;
}
}
if (RB_LEN(&tp->t_out) == 0)
{
goto out;
}
c = getc(&tp->t_out);
tp->t_state |= TS_BUSY; /* patch from Frank Maclachlan */
splx(s);
sput(&c, 0, 1, minor(tp->t_dev));
spltty();
tp->t_state &= ~TS_BUSY; /* patch from Frank Maclachlan */
}
out:
splx(s);
}
#endif /* PCVT_NETBSD */
/*---------------------------------------------------------------------------*
* /dev/console
*---------------------------------------------------------------------------*/
#if !PCVT_NETBSD /* has moved to cons.c in netbsd-current */
void
consinit() /* init for kernel messages during boot */
{
}
#endif /* PCVT_NETBSD */
int
pccnprobe(struct consdev *cp)
{
int maj;
/* locate the major number */
for (maj = 0; maj < nchrdev; maj++)
{
if ((u_int)cdevsw[maj].d_open == (u_int)pcopen)
break;
}
/* initialize required fields */
cp->cn_dev = makedev(maj, 0);
cp->cn_pri = CN_INTERNAL;
#if !PCVT_NETBSD
cp->cn_tp = &pccons[0];
#endif /* !PCVT_NETBSD */
return 1;
}
int
pccninit(struct consdev *cp)
{
return 0;
}
int
pccnputc(Dev_t dev, U_char c)
{
if (c == '\n')
sput("\r", 1, 1, 0);
sput((char *) &c, 1, 1, 0);
return 0;
}
int
pccngetc(Dev_t dev)
{
register int s;
register u_char *cp;
#ifdef XSERVER
#if !PCVT_USL_VT_COMPAT
if (pcvt_xmode)
return 0;
#else /* !PCVT_USL_VT_COMPAT */
if (pcvt_kbd_raw)
return 0;
#endif /* !PCVT_USL_VT_COMPAT */
#endif /* XSERVER */
s = spltty(); /* block pcrint while we poll */
cp = sgetc(0);
splx(s);
if (*cp == '\r')
return('\n');
return (*cp);
}
/*---------------------------------------------------------------------------*
* Set line parameters
*---------------------------------------------------------------------------*/
int
pcparam(struct tty *tp, struct termios *t)
{
register int cflag = t->c_cflag;
/* and copy to tty */
tp->t_ispeed = t->c_ispeed;
tp->t_ospeed = t->c_ospeed;
tp->t_cflag = cflag;
return(0);
}
#if PCVT_NEEDPG
/* this is moved to cons.c in patchkit 0.2.2 and higher */
int
pg (char *p,
int q, int r, int s, int t, int u,
int v, int w, int x, int y, int z)
{
#if !PCVT_USL_VT_COMPAT
vgapage(0);
#else
switch_screen(0, 0);
#endif /* !PCVT_USL_VT_COMPAT */
printf(p,q,r,s,t,u,v,w,x,y,z);
printf("\n");
return(getchar());
}
#endif /* PCVT_NEEDPG */
/* special characters */
#define bs 8
#define lf 10
#define cr 13
#define cntlc 3
#define del 0177
#define cntld 4
int
getchar(void)
{
u_char thechar;
int x;
kbd_polling = 1;
x = splhigh();
sput(">", 1, 1, 0);
thechar = *(sgetc(0));
kbd_polling = 0;
splx(x);
switch (thechar)
{
default:
if (thechar >= ' ')
sput(&thechar, 1, 1, 0);
return(thechar);
case cr:
case lf:
sput("\r\n", 1, 2, 0);
return(lf);
case bs:
case del:
sput("\b \b", 1, 3, 0);
return(thechar);
case cntlc:
sput("^C\r\n", 1, 4, 0) ;
cpu_reset();
case cntld:
sput("^D\r\n", 1, 4, 0) ;
return(0);
}
}
void
dprintf(unsigned flgs, const char *fmt, ...)
{
extern unsigned __debug;
va_list ap;
if((flgs&__debug) > DPAUSE)
{
__color = ffs(flgs&__debug)+1;
va_start(ap,fmt);
kprintf(fmt, 1, (struct tty *)0, ap);
va_end(ap);
if (flgs & DPAUSE || nrow%24 == 23)
{
int x;
x = splhigh();
if(nrow%24 == 23)
nrow = 0;
(void)sgetc(0);
splx(x);
}
}
__color = 0;
}
/*----------------------------------------------------------------------*
* read initial VGA palette (as stored by VGA ROM BIOS) into
* palette save area
*----------------------------------------------------------------------*/
void
vgapelinit(void)
{
register unsigned idx;
register struct rgb *val;
/* first, read all and store to first screen's save buffer */
for(idx = 0, val = vs[0].palette; idx < NVGAPEL; idx++, val++)
vgapaletteio(idx, val, 0 /* read it */);
/* now, duplicate for remaining screens */
for(idx = 1; idx < PCVT_NSCREENS; idx++)
bcopy(vs[0].palette, vs[idx].palette,
NVGAPEL * sizeof(struct rgb));
}
#if defined XSERVER && !PCVT_USL_VT_COMPAT
/*----------------------------------------------------------------------*
* initialize for X mode
* i.e.: grant current process (the X server) all IO priviledges,
* and mark in static variable so other hooks can test for it,
* save all loaded fonts and screen pages to pageable buffers;
* if parameter `on' is false, the same procedure is done reverse.
*----------------------------------------------------------------------*/
static int
pcvt_xmode_set(int on, struct proc *p)
{
static unsigned char *saved_fonts[NVGAFONTS];
#if PCVT_SCREENSAVER
static unsigned saved_scrnsv_tmo = 0;
#endif /* PCVT_SCREENSAVER */
#if PCVT_NETBSD
extern u_short *Crtat;
#endif /* PCVT_NETBSD */
#if PCVT_NETBSD > 9
struct trapframe *fp;
#else
struct syscframe *fp;
#endif
int i;
if(adaptor_type != VGA_ADAPTOR
&& adaptor_type != MDA_ADAPTOR)
/* X will only run on those adaptors */
return (EINVAL);
#if PCVT_NETBSD > 9
fp = (struct trapframe *)p->p_regs;
#else
fp = (struct syscframe *)p->p_regs;
#endif
if(on)
{
/*
* Test whether the calling process has super-user priviledges.
* This prevents us from granting the potential security hole
* `IO priv' to any process (effective uid is checked).
*/
if(suser(p->p_ucred, &p->p_acflag) != 0)
return (EPERM);
if(pcvt_xmode)
return 0;
pcvt_xmode = pcvt_kbd_raw = 1;
for(i = 0; i < totalfonts; i++) {
if(vgacs[i].loaded) {
saved_fonts[i] = (unsigned char *)
malloc(32 * 256, M_DEVBUF, M_WAITOK);
if(saved_fonts[i] == 0) {
printf(
"pcvt_xmode_set: no font buffer available\n");
return (EAGAIN);
}
else
vga_move_charset(i, saved_fonts[i], 1);
} else
saved_fonts[i] = 0;
}
#if PCVT_SCREENSAVER
if(saved_scrnsv_tmo = scrnsv_timeout)
pcvt_set_scrnsv_tmo(0); /* turn it off */
#endif /* PCVT_SCREENSAVER */
async_update(1); /* turn off */
/* disable text output and save screen contents */
/* video board memory -> kernel memory */
bcopy(vsp->Crtat, vsp->Memory,
vsp->screen_rowsize * vsp->maxcol * CHR);
vsp->Crtat = vsp->Memory; /* operate in memory now */
#if PCVT_SCANSET == 2
/* put keyboard to return ancient PC scan codes */
kbc_8042cmd(CONTR_WRITE);
#if PCVT_USEKBDSEC /* security enabled */
outb(CONTROLLER_DATA,
(COMMAND_SYSFLG|COMMAND_IRQEN|COMMAND_PCSCAN));
#else /* security disabled */
outb(CONTROLLER_DATA,
(COMMAND_INHOVR|COMMAND_SYSFLG|COMMAND_IRQEN|COMMAND_PCSCAN));
#endif /* PCVT_USEKBDSEC */
#endif /* PCVT_SCANSET == 2 */
#if PCVT_NETBSD > 9
fp->tf_eflags |= PSL_IOPL;
#else
fp->sf_eflags |= PSL_IOPL;
#endif
}
else
{
if(!pcvt_xmode)
return 0;
pcvt_xmode = pcvt_kbd_raw = 0;
for(i = 0; i < totalfonts; i++)
if(saved_fonts[i]) {
vga_move_charset(i, saved_fonts[i], 0);
free(saved_fonts[i], M_DEVBUF);
saved_fonts[i] = 0;
}
#if PCVT_NETBSD > 9
fp->tf_eflags &= ~PSL_IOPL;
#else
fp->sf_eflags &= ~PSL_IOPL;
#endif
#if PCVT_SCREENSAVER
if(saved_scrnsv_tmo)
pcvt_set_scrnsv_tmo(saved_scrnsv_tmo);
#endif /* PCVT_SCREENSAVER */
#if PCVT_SCANSET == 2
kbc_8042cmd(CONTR_WRITE);
#if PCVT_USEKBDSEC /* security enabled */
outb(CONTROLLER_DATA,
(COMMAND_SYSFLG|COMMAND_IRQEN));
#else /* security disabled */
outb(CONTROLLER_DATA,
(COMMAND_INHOVR|COMMAND_SYSFLG|COMMAND_IRQEN));
#endif /* PCVT_USEKBDSEC */
#endif /* PCVT_SCANSET == 2 */
if(adaptor_type == MDA_ADAPTOR)
{
/*
* Due to the fact that HGC registers are write-only,
* the Xserver can only make guesses about the state
* the HGC adaptor has been before turning on X mode.
* Thus, the display must be re-enabled now, and the
* cursor shape and location restored.
*/
outb(GN_DMCNTLM, 0x28); /* enable display, text mode */
outb(addr_6845, CRTC_CURSORH); /* select high register */
outb(addr_6845+1,
((vsp->Crtat + vsp->cur_offset) - Crtat) >> 8);
outb(addr_6845, CRTC_CURSORL); /* select low register */
outb(addr_6845+1,
((vsp->Crtat + vsp->cur_offset) - Crtat));
outb(addr_6845, CRTC_CURSTART); /* select high register */
outb(addr_6845+1, vsp->cursor_start);
outb(addr_6845, CRTC_CUREND); /* select low register */
outb(addr_6845+1, vsp->cursor_end);
}
/* restore screen and re-enable text output */
/* kernel memory -> video board memory */
bcopy(vsp->Memory, Crtat,
vsp->screen_rowsize * vsp->maxcol * CHR);
vsp->Crtat = Crtat; /* operate on-screen now */
outb(addr_6845, CRTC_STARTADRH);
outb(addr_6845+1, (svsp->Crtat - Crtat) >> 8);
outb(addr_6845, CRTC_STARTADRL);
outb(addr_6845+1, (svsp->Crtat - Crtat));
async_update(0);
}
return 0;
}
#endif /* XSERVER && !PCVT_USL_VT_COMPAT */
#if PCVT_386BSD
/* dummies required to work with patchkit 0.2.4 */
void cons_highlight (void) {}
void cons_normal (void) {}
#endif
#endif /* NVT > 0 */
/*-------------------------- E O F -------------------------------------*/
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