384 lines
7.3 KiB
C
384 lines
7.3 KiB
C
/* $NetBSD: wscons.c,v 1.3 1995/11/23 02:38:36 cgd Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#include <sys/termios.h>
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#include <dev/cons.h>
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#include <dev/pseudo/ansicons.h>
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#include <alpha/pci/wsconsvar.h>
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#define NWSC 16 /* XXX XXX XXX */
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#define WSCUNIT(dev) minor(dev)
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struct wsc_softc {
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int sc_flags;
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struct device *sc_odev;
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struct ansicons *sc_ansicons;
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struct tty *sc_tty;
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};
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#define WSC_INPUT 0x01
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#define WSC_OUTPUT 0x02
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#define WSC_ALIVE (WSC_INPUT | WSC_OUTPUT)
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struct wsc_softc wsc_sc[NWSC]; /* XXX XXX XXX */
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int nwsc = NWSC;
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int nextiwsc;
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int nextowsc;
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void wscstart __P((struct tty *));
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int wscparam __P((struct tty *, struct termios *));
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int wsccngetc __P((dev_t));
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void wsccnputc __P((dev_t, int));
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void wsccnpollc __P((dev_t, int));
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struct ansicons *wsc_console_ansicons;
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void *wsc_input_arg;
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int (*wsc_console_getc) __P((void *)) = NULL;
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void (*wsc_console_pollc) __P((void *, int)) = NULL;
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struct consdev wsccons = { NULL, NULL, wsccngetc, wsccnputc,
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wsccnpollc, NODEV, 1 };
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int wsc_kbdfocusunit = -1; /* XXX */
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int
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wscattach_output(dev, console, acp, acf, acfarg, mrow, mcol, crow, ccol)
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struct device *dev;
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int console;
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struct ansicons *acp;
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struct ansicons_functions *acf;
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void *acfarg;
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int mrow, mcol, crow, ccol;
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{
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if (nextowsc >= nwsc)
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return 0;
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wsc_sc[nextowsc].sc_odev = dev;
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wsc_sc[nextowsc].sc_ansicons = acp;
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if (wsc_kbdfocusunit == -1)
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wsc_kbdfocusunit = nextowsc;
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if (!console)
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ansicons_attach(acp, acf, acfarg, mrow, mcol, crow, ccol);
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else {
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wsc_kbdfocusunit = nextowsc;
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wsccons.cn_dev = makedev(25, nextowsc);
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}
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wsc_sc[nextowsc].sc_flags |= WSC_OUTPUT;
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wsc_sc[nextowsc].sc_tty = ttymalloc();
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printf("wsc%d: %s attached as output\n", nextowsc, dev->dv_xname);
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if (console)
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printf("wsc%d: console\n", nextowsc);
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nextowsc++;
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return 1;
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}
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void
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wscattach_input(dev, cookie, getc, pollc)
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struct device *dev;
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void *cookie;
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int (*getc) __P((void *));
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void (*pollc) __P((void *, int));
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{
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printf("wsc: %s attached as input device\n", dev->dv_xname);
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wsc_input_arg = cookie;
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wsc_console_getc = getc;
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wsc_console_pollc = pollc;
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}
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int
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wscopen(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct wsc_softc *sc;
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int unit = WSCUNIT(dev);
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struct tty *tp;
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if (unit >= nwsc)
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return ENXIO;
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sc = &wsc_sc[unit];
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if (sc == 0)
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return ENXIO;
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if ((sc->sc_flags & WSC_ALIVE) == 0)
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return ENXIO;
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if (!sc->sc_tty)
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panic("wscopen: no tty!");
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tp = sc->sc_tty;
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tp->t_oproc = wscstart;
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tp->t_param = wscparam;
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tp->t_dev = dev;
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if ((tp->t_state & TS_ISOPEN) == 0) {
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tp->t_state |= TS_WOPEN;
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ttychars(tp);
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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wscparam(tp, &tp->t_termios);
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ttsetwater(tp);
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} else if ((tp->t_state & TS_XCLUDE) != 0 && p->p_ucred->cr_uid != 0)
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return EBUSY;
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tp->t_state |= TS_CARR_ON;
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return ((*linesw[tp->t_line].l_open)(dev, tp));
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}
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int
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wscclose(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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struct wsc_softc *sc = &wsc_sc[WSCUNIT(dev)];
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struct tty *tp = sc->sc_tty;
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(*linesw[tp->t_line].l_close)(tp, flag);
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ttyclose(tp);
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#ifdef notyet /* XXX */
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ttyfree(tp);
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#endif
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return(0);
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}
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int
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wscread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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struct wsc_softc *sc = &wsc_sc[WSCUNIT(dev)];
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struct tty *tp = sc->sc_tty;
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return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
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}
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int
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wscwrite(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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struct wsc_softc *sc = &wsc_sc[WSCUNIT(dev)];
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struct tty *tp = sc->sc_tty;
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return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
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}
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struct tty *
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wsctty(dev)
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dev_t dev;
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{
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struct wsc_softc *sc = &wsc_sc[WSCUNIT(dev)];
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struct tty *tp = sc->sc_tty;
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return (tp);
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}
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int
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wscioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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struct wsc_softc *sc = &wsc_sc[WSCUNIT(dev)];
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struct tty *tp = sc->sc_tty;
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int error;
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error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
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if (error >= 0)
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return error;
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error = ttioctl(tp, cmd, data, flag, p);
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if (error >= 0)
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return error;
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switch (cmd) {
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default:
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return (ENOTTY);
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}
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#ifdef DIAGNOSTIC
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panic("wscioctl: impossible");
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#endif
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}
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void
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wscstart(tp)
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register struct tty *tp;
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{
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register int s, n, i;
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char buf[OBUFSIZ];
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s = spltty();
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if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
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splx(s);
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return;
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}
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tp->t_state |= TS_BUSY;
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splx(s);
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n = q_to_b(&tp->t_outq, buf, sizeof(buf));
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for (i = 0; i < n; ++i)
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buf[i] &= 0177; /* strip parity (argh) */
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ansicons_input(wsc_sc[WSCUNIT(tp->t_dev)].sc_ansicons, buf, n);
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s = spltty();
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tp->t_state &= ~TS_BUSY;
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/* Come back if there's more to do */
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if (tp->t_outq.c_cc) {
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tp->t_state |= TS_TIMEOUT;
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timeout(ttrstrt, tp, 1);
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}
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if (tp->t_outq.c_cc <= tp->t_lowat) {
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if (tp->t_state&TS_ASLEEP) {
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tp->t_state &= ~TS_ASLEEP;
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wakeup((caddr_t)&tp->t_outq);
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}
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selwakeup(&tp->t_wsel);
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}
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splx(s);
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}
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void
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wscstop(tp, flag)
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struct tty *tp;
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int flag;
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{
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}
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/*
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* Set line parameters.
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*/
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int
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wscparam(tp, t)
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struct tty *tp;
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struct termios *t;
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{
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tp->t_ispeed = t->c_ispeed;
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tp->t_ospeed = t->c_ospeed;
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tp->t_cflag = t->c_cflag;
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return 0;
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}
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/*
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* keyboard input!
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*/
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void
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wscons_kbdinput(cp)
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char *cp;
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{
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struct wsc_softc *sc;
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struct tty *tp;
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if (wsc_kbdfocusunit == -1)
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return;
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sc = &wsc_sc[wsc_kbdfocusunit];
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tp = sc->sc_tty;
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while (*cp)
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(*linesw[tp->t_line].l_rint)(*cp++, tp);
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}
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/*
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* XXX CONSOLE HANDLING GUNK.
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*/
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void
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wsc_console(acp, acf, acfarg, mrow, mcol, crow, ccol)
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struct ansicons *acp;
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struct ansicons_functions *acf;
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void *acfarg;
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int mrow, mcol, crow, ccol;
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{
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wsc_console_ansicons = acp;
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ansicons_attach(acp, acf, acfarg, mrow, mcol, crow, ccol);
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cn_tab = &wsccons;
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}
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void
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wsccnputc(dev, ic)
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dev_t dev;
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int ic;
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{
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char c = ic;
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ansicons_input(wsc_console_ansicons, &c, 1);
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}
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int
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wsccngetc(dev)
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dev_t dev;
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{
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if (wsc_console_getc != NULL)
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return (*wsc_console_getc)(wsc_input_arg);
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else
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return '\0';
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}
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void
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wsccnpollc(dev, i)
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dev_t dev;
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int i;
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{
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if (wsc_console_pollc != NULL)
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(*wsc_console_pollc)(wsc_input_arg, i);
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}
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