This provides a tty device for dev/cons.c to point at.
This commit is contained in:
gwr
parent
1adf9a39b5
commit
c224b41c38
313
sys/arch/sun3/dev/kd.c
Normal file
313
sys/arch/sun3/dev/kd.c
Normal file
@ -0,0 +1,313 @@
|
||||
/*
|
||||
* Copyright (c) 1994 Gordon W. Ross
|
||||
* All rights reserved.
|
||||
*
|
||||
* 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. The name of the Author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY Gordon W. Ross ``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 REGENTS OR CONTRIBUTORS 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.
|
||||
*
|
||||
* $Header: /cvsroot/src/sys/arch/sun3/dev/kd.c,v 1.1 1994/05/04 05:27:50 gwr Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
* Keyboard/Display device.
|
||||
*
|
||||
* This driver exists simply to provide a tty device that
|
||||
* the indirect console driver can point to.
|
||||
* The kbd driver sends its input here.
|
||||
* Output goes to the screen via PROM printf.
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/tty.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/conf.h>
|
||||
#include <sys/device.h>
|
||||
|
||||
#include <machine/autoconf.h>
|
||||
#include <machine/mon.h>
|
||||
|
||||
#include <dev/cons.h>
|
||||
|
||||
#define BURST 64
|
||||
|
||||
static int kdmatch(struct device *, struct cfdata *, void *);
|
||||
static void kdattach(struct device *, struct device *, void *);
|
||||
|
||||
struct cfdriver kdcd = {
|
||||
NULL, "kd", kdmatch, kdattach, DV_TTY,
|
||||
sizeof(struct device), 0};
|
||||
|
||||
struct tty *kd_tty[1];
|
||||
|
||||
int kdopen(dev_t, int, int, struct proc *);
|
||||
int kdclose(dev_t, int, int, struct proc *);
|
||||
int kdread(dev_t, struct uio *, int);
|
||||
int kdwrite(dev_t, struct uio *, int);
|
||||
int kdioctl(dev_t, int, caddr_t, int, struct proc *);
|
||||
|
||||
static int kdparam(struct tty *, struct termios *);
|
||||
static void kdstart(struct tty *);
|
||||
|
||||
static int
|
||||
kdmatch(struct device *parent, struct cfdata *cf, void *aux)
|
||||
{
|
||||
/* XXX - Enforce unit zero? */
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
kdattach(parent, self, args)
|
||||
struct device *parent;
|
||||
struct device *self;
|
||||
void *args;
|
||||
{
|
||||
int unit = self->dv_unit;
|
||||
|
||||
if (unit) {
|
||||
printf(" not unit zero?\n");
|
||||
return;
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
kd_tty[0] = ttymalloc();
|
||||
|
||||
/* Tell keyboard module where to send read data. */
|
||||
kbd_ascii(kd_tty[0]);
|
||||
}
|
||||
|
||||
int
|
||||
kdopen(dev, flag, mode, p)
|
||||
dev_t dev;
|
||||
int flag, mode;
|
||||
struct proc *p;
|
||||
{
|
||||
int unit;
|
||||
struct tty *tp;
|
||||
|
||||
unit = minor(dev);
|
||||
if (unit) return ENXIO;
|
||||
|
||||
tp = kd_tty[unit];
|
||||
if (tp == NULL)
|
||||
return ENXIO;
|
||||
|
||||
tp->t_oproc = kdstart;
|
||||
tp->t_param = kdparam;
|
||||
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;
|
||||
kdparam(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;
|
||||
|
||||
return ((*linesw[tp->t_line].l_open)(dev, tp));
|
||||
}
|
||||
|
||||
int
|
||||
kdclose(dev, flag, mode, p)
|
||||
dev_t dev;
|
||||
int flag, mode;
|
||||
struct proc *p;
|
||||
{
|
||||
int unit = minor(dev);
|
||||
struct tty *tp = kd_tty[unit];
|
||||
|
||||
(*linesw[tp->t_line].l_close)(tp, flag);
|
||||
ttyclose(tp);
|
||||
return (0);
|
||||
}
|
||||
|
||||
int
|
||||
kdread(dev, uio, flag)
|
||||
dev_t dev;
|
||||
struct uio *uio;
|
||||
int flag;
|
||||
{
|
||||
int unit = minor(dev);
|
||||
struct tty *tp = kd_tty[unit];
|
||||
|
||||
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
|
||||
}
|
||||
|
||||
int
|
||||
kdwrite(dev, uio, flag)
|
||||
dev_t dev;
|
||||
struct uio *uio;
|
||||
int flag;
|
||||
{
|
||||
int unit = minor(dev);
|
||||
struct tty *tp = kd_tty[unit];
|
||||
|
||||
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
|
||||
}
|
||||
|
||||
int
|
||||
kdioctl(dev, cmd, data, flag, p)
|
||||
dev_t dev;
|
||||
int cmd;
|
||||
caddr_t data;
|
||||
int flag;
|
||||
struct proc *p;
|
||||
{
|
||||
int error;
|
||||
int unit = minor(dev);
|
||||
struct tty *tp = kd_tty[unit];
|
||||
|
||||
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
|
||||
if (error >= 0)
|
||||
return error;
|
||||
error = ttioctl(tp, cmd, data, flag, p);
|
||||
if (error >= 0)
|
||||
return error;
|
||||
|
||||
/* Handle any ioctl commands specific to kbd/display. */
|
||||
/* XXX - Send KB* ioctls to kbd module? */
|
||||
/* XXX - Send FB* ioctls to fb module? */
|
||||
|
||||
return ENOTTY;
|
||||
}
|
||||
|
||||
void
|
||||
kdstart(tp)
|
||||
struct tty *tp;
|
||||
{
|
||||
struct clist *cl;
|
||||
int s, len;
|
||||
u_char buf[BURST];
|
||||
|
||||
s = spltty();
|
||||
if (tp->t_state & (TS_BUSY|TS_TTSTOP|TS_TIMEOUT))
|
||||
goto out;
|
||||
tp->t_state |= TS_BUSY;
|
||||
cl = &tp->t_outq;
|
||||
|
||||
/*
|
||||
* XXX - It might be nice to have our own fbputs() so
|
||||
* we would not have to use the (slow) PROM printf.
|
||||
*/
|
||||
while ((len = q_to_b(cl, buf, BURST-1)) > 0) {
|
||||
buf[len] = '\0';
|
||||
(void) splhigh();
|
||||
#if 0
|
||||
/* XXX - Not yet. Not sure what args should be. */
|
||||
(romVectorPtr->fbWriteStr)(buf);
|
||||
#else
|
||||
mon_printf("%s", buf);
|
||||
#endif
|
||||
(void) spltty();
|
||||
}
|
||||
|
||||
tp->t_state &= ~TS_BUSY;
|
||||
if (tp->t_state & TS_ASLEEP) {
|
||||
tp->t_state &= ~TS_ASLEEP;
|
||||
wakeup((caddr_t)cl);
|
||||
}
|
||||
selwakeup(&tp->t_wsel);
|
||||
out:
|
||||
splx(s);
|
||||
}
|
||||
|
||||
static int
|
||||
kdparam(tp, t)
|
||||
struct tty *tp;
|
||||
struct termios *t;
|
||||
{
|
||||
/* XXX - These are ignored... */
|
||||
tp->t_ispeed = t->c_ispeed;
|
||||
tp->t_ospeed = t->c_ospeed;
|
||||
tp->t_cflag = t->c_cflag;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* kd console support
|
||||
*
|
||||
* XXX - Using prom routines for now...
|
||||
*/
|
||||
|
||||
extern int zscnprobe_kbd();
|
||||
|
||||
kdcnprobe(cp)
|
||||
struct consdev *cp;
|
||||
{
|
||||
int maj;
|
||||
|
||||
/* locate the major number */
|
||||
for (maj = 0; maj < nchrdev; maj++)
|
||||
if (cdevsw[maj].d_open == kdopen)
|
||||
break;
|
||||
|
||||
/* initialize required fields */
|
||||
cp->cn_dev = makedev(maj, 0);
|
||||
cp->cn_pri = zscnprobe_kbd();
|
||||
}
|
||||
|
||||
kdcninit(cp)
|
||||
struct consdev *cp;
|
||||
{
|
||||
mon_printf("console on kd0 (keyboard/display)\n");
|
||||
}
|
||||
|
||||
kdcngetc(dev)
|
||||
dev_t dev;
|
||||
{
|
||||
int c, s;
|
||||
|
||||
/* XXX - Does mon_may_getchar() require the NMI clock? */
|
||||
s = splhigh();
|
||||
do c = mon_may_getchar();
|
||||
while (c < 0);
|
||||
splx(s);
|
||||
|
||||
if (c == '\r')
|
||||
c = '\n';
|
||||
return (c);
|
||||
}
|
||||
|
||||
kdcnputc(dev, c)
|
||||
dev_t dev;
|
||||
int c;
|
||||
{
|
||||
int s;
|
||||
|
||||
s = splhigh();
|
||||
#if 0
|
||||
/* XXX - Is this worth doing? */
|
||||
(romVectorPtr->fbWriteChar)(c);
|
||||
#else
|
||||
mon_putchar(c);
|
||||
#endif
|
||||
splx(s);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user