NetBSD/sys/dev/hpc/biconsdev.c

246 lines
7.1 KiB
C

/* $NetBSD: biconsdev.c,v 1.20 2007/11/19 18:51:46 ad Exp $ */
/*-
* Copyright (c) 1999-2001
* Shin Takemura and PocketBSD Project. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the PocketBSD project
* and its contributors.
* 4. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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.
*
*/
/*
* Copyright (c) 1995
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ted Lemon.
*
* 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. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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.
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: biconsdev.c,v 1.20 2007/11/19 18:51:46 ad Exp $");
#include "biconsdev.h"
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/conf.h>
#include <sys/kauth.h>
#include <dev/cons.h>
#include <dev/hpc/bicons.h>
#include <dev/hpc/biconsvar.h>
struct tty biconsdev_tty[NBICONSDEV];
void biconsdevattach(int);
static void biconsdev_output(struct tty *);
dev_type_open(biconsdevopen);
dev_type_close(biconsdevclose);
dev_type_read(biconsdevread);
dev_type_write(biconsdevwrite);
dev_type_ioctl(biconsdevioctl);
dev_type_tty(biconsdevtty);
dev_type_poll(biconsdevpoll);
const struct cdevsw biconsdev_cdevsw = {
biconsdevopen, biconsdevclose, biconsdevread, biconsdevwrite,
biconsdevioctl, nostop, biconsdevtty, biconsdevpoll, nommap,
ttykqfilter, D_TTY
};
void
biconsdevattach(int n)
{
struct tty *tp = &biconsdev_tty[0];
int maj;
/* locate the major number */
maj = cdevsw_lookup_major(&biconsdev_cdevsw);
/* Set up the tty queues now... */
clalloc(&tp->t_rawq, 1024, 1);
clalloc(&tp->t_canq, 1024, 1);
/* output queue doesn't need quoting */
clalloc(&tp->t_outq, 1024, 0);
/* Set default line discipline. */
tp->t_linesw = ttyldisc_default();
tp->t_dev = makedev(maj, 0);
tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
tp->t_param = (int (*)(struct tty *, struct termios *))nullop;
tp->t_winsize.ws_row = bicons_height;
tp->t_winsize.ws_col = bicons_width;
tp->t_winsize.ws_xpixel = bicons_xpixel;
tp->t_winsize.ws_ypixel = bicons_ypixel;
tp->t_oproc = biconsdev_output;
}
static void
biconsdev_output(struct tty *tp)
{
int s, n;
char buf[OBUFSIZ];
s = spltty();
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
splx(s);
return;
}
tp->t_state |= TS_BUSY;
splx(s);
n = q_to_b(&tp->t_outq, buf, sizeof(buf));
bicons_putn(buf, n);
s = spltty();
tp->t_state &= ~TS_BUSY;
/* Come back if there's more to do */
if (ttypull(tp)) {
tp->t_state |= TS_TIMEOUT;
callout_schedule(&tp->t_rstrt_ch, 1);
}
splx(s);
}
int
biconsdevopen(dev_t dev, int flag, int mode, struct lwp *l)
{
struct tty *tp = &biconsdev_tty[0];
int status;
if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
return (EBUSY);
if ((tp->t_state & TS_ISOPEN) == 0) {
/*
* Leave baud rate alone!
*/
ttychars(tp);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
tp->t_cflag = TTYDEF_CFLAG;
tp->t_state = TS_ISOPEN | TS_CARR_ON;
(void)(*tp->t_param)(tp, &tp->t_termios);
ttsetwater(tp);
}
status = (*tp->t_linesw->l_open)(dev, tp);
return status;
}
int
biconsdevclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct tty *tp = &biconsdev_tty[0];
(*tp->t_linesw->l_close)(tp, flag);
ttyclose(tp);
return (0);
}
int
biconsdevread(dev_t dev, struct uio *uio, int flag)
{
struct tty *tp = &biconsdev_tty[0];
return ((*tp->t_linesw->l_read)(tp, uio, flag));
}
int
biconsdevwrite(dev_t dev, struct uio *uio, int flag)
{
struct tty *tp = &biconsdev_tty[0];
return ((*tp->t_linesw->l_write)(tp, uio, flag));
}
int
biconsdevpoll(dev_t dev, int events, struct lwp *l)
{
struct tty *tp = &biconsdev_tty[0];
return ((*tp->t_linesw->l_poll)(tp, events, l));
}
struct tty *
biconsdevtty(dev_t dev)
{
struct tty *tp = &biconsdev_tty[0];
return (tp);
}
int
biconsdevioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
struct tty *tp = &biconsdev_tty[0];
int error;
if ((error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l)) !=
EPASSTHROUGH)
return (error);
return (ttioctl(tp, cmd, data, flag, l));
}