NetBSD/sys/arch/alpha/pci/wscons.c

384 lines
7.3 KiB
C

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