/* $NetBSD: biconsdev.c,v 1.23 2015/08/20 14:40:18 christos 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 1.23 2015/08/20 14:40:18 christos 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> #include "ioconf.h" struct tty biconsdev_tty[NBICONSDEV]; 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 = { .d_open = biconsdevopen, .d_close = biconsdevclose, .d_read = biconsdevread, .d_write = biconsdevwrite, .d_ioctl = biconsdevioctl, .d_stop = nostop, .d_tty = biconsdevtty, .d_poll = biconsdevpoll, .d_mmap = nommap, .d_kqfilter = ttykqfilter, .d_discard = nodiscard, .d_flag = 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)); }
