sync w/netbsd

1 files changed, 523 insertions, 0 deletions

diff --git a/sys/arch/vax/qbus/dl.c b/sys/arch/vax/qbus/dl.c
new file mode 100644
index 00000000000..7bd7d71859c
--- /dev/null
+++ b/sys/arch/vax/qbus/dl.c
@@ -0,0 +1,523 @@
+/*	$OpenBSD: dl.c,v 1.1 2000/04/27 03:14:47 bjc Exp $	*/
+/*	$NetBSD: dl.c,v 1.11 2000/01/24 02:40:29 matt Exp $	*/
+
+/*-
+ * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe.
+ *
+ * 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 NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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) 1997  Ben Harris.  All rights reserved.
+ * Copyright (c) 1996  Ken C. Wellsch.  All rights reserved.
+ * Copyright (c) 1982, 1986, 1990, 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ralph Campbell and Rick Macklem.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+/*
+ * dl.c -- Device driver for the DL11 and DLV11 serial cards.
+ *
+ * OS-interface code derived from the dz and dca (hp300) drivers.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/proc.h>
+#include <sys/map.h>
+#include <sys/buf.h>
+#include <sys/conf.h>
+#include <sys/file.h>
+#include <sys/uio.h>
+#include <sys/kernel.h>
+#include <sys/syslog.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+#include <machine/scb.h>
+
+#include <arch/vax/qbus/ubavar.h>
+#include <arch/vax/qbus/dlreg.h>
+
+struct dl_softc {
+	struct device	sc_dev;
+	bus_space_tag_t	sc_iot;
+	bus_space_handle_t sc_ioh;
+	struct tty	*sc_tty;
+};
+
+static	int	dl_match __P((struct device *, struct cfdata *, void *));
+static	void	dl_attach __P((struct device *, struct device *, void *));
+static	void	dlrint __P((void *));
+static	void	dlxint __P((void *));
+static	void	dlstart __P((struct tty *));
+static	int	dlparam __P((struct tty *, struct termios *));
+static	void	dlbrk __P((struct dl_softc *, int));
+struct	tty *	dltty __P((dev_t));
+	int	dlopen __P((dev_t, int, int, struct proc *));
+	int	dlclose __P((dev_t, int, int, struct proc *));
+	int	dlread __P((dev_t, struct uio *, int));
+	int	dlwrite __P((dev_t, struct uio *, int));
+	int	dlioctl __P((dev_t, int, caddr_t, int, struct proc *));
+	void	dlstop __P((struct tty *, int));
+
+struct cfattach dl_ca = {
+	sizeof(struct dl_softc), (cfmatch_t)dl_match, dl_attach
+};
+
+struct	cfdriver dl_cd = {
+	NULL, "dl", DV_TTY
+};
+
+#define	DL_READ_WORD(reg) \
+	bus_space_read_2(sc->sc_iot, sc->sc_ioh, reg)
+#define	DL_WRITE_WORD(reg, val) \
+	bus_space_write_2(sc->sc_iot, sc->sc_ioh, reg, val)
+#define	DL_WRITE_BYTE(reg, val) \
+	bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val)
+
+/* Autoconfig handles: setup the controller to interrupt, */
+/* then complete the housecleaning for full operation */
+
+static int
+dl_match (parent, cf, aux)
+	struct device * parent;
+	struct cfdata *cf;
+	void *aux;
+{
+	struct uba_attach_args *ua = aux;
+
+#ifdef DL_DEBUG
+	printf("Probing for dl at %lo ... ", (long)ua->ua_iaddr);
+#endif
+
+	bus_space_write_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR, DL_XCSR_TXIE);
+	if (bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR) !=
+	    (DL_XCSR_TXIE | DL_XCSR_TX_READY)) {
+#ifdef DL_DEBUG
+	        printf("failed (step 1; XCSR = %.4b)\n", 
+		    bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR), 
+		    DL_XCSR_BITS);
+#endif
+		return 0;
+	}
+	
+	/*
+	 * We have to force an interrupt so the uba driver can work
+	 * out where we are.  Unfortunately, the only way to make a
+	 * DL11 interrupt is to get it to send or receive a
+	 * character.  We'll send a NUL and hope it doesn't hurt
+	 * anything.
+	 */
+
+	bus_space_write_1(ua->ua_iot, ua->ua_ioh, DL_UBA_XBUFL, '\0');
+#if 0 /* This test seems to fail 2/3 of the time :-( */
+	if (dladdr->dl_xcsr != (DL_XCSR_TXIE)) {
+#ifdef DL_DEBUG
+	        printf("failed (step 2; XCSR = %.4b)\n", dladdr->dl_xcsr,
+		       DL_XCSR_BITS);
+#endif
+		return 0;
+	}
+#endif
+	DELAY(100000); /* delay 1/10 s for character to transmit */
+	if (bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR) !=
+	    (DL_XCSR_TXIE | DL_XCSR_TX_READY)) {
+#ifdef DL_DEBUG
+	        printf("failed (step 3; XCSR = %.4b)\n", 
+		    bus_space_read_2(ua->ua_iot, ua->ua_ioh, DL_UBA_XCSR),
+		    DL_XCSR_BITS);
+#endif
+		return 0;
+	}
+
+
+        /* What else do I need to do? */
+
+	return 1;
+
+}
+
+static void
+dl_attach (parent, self, aux)
+	struct device *parent, *self;
+	void *aux;
+{
+	struct dl_softc *sc = (void *)self;
+	register struct uba_attach_args *ua = aux;
+
+	sc->sc_iot = ua->ua_iot;
+	sc->sc_ioh = ua->ua_ioh;
+	
+	/* Tidy up the device */
+
+	DL_WRITE_WORD(DL_UBA_RCSR, DL_RCSR_RXIE);
+	DL_WRITE_WORD(DL_UBA_XCSR, DL_XCSR_TXIE);
+
+	/* Initialize our softc structure. Should be done in open? */
+	
+	sc->sc_tty = ttymalloc();
+	tty_attach(sc->sc_tty);
+
+	/* Now register the TX & RX interrupt handlers */
+	uba_intr_establish(ua->ua_icookie, ua->ua_cvec    , dlxint, sc);
+	uba_intr_establish(ua->ua_icookie, ua->ua_cvec - 4, dlrint, sc);
+
+	printf("\n");
+}
+
+/* Receiver Interrupt Handler */
+
+static void
+dlrint(arg)
+	void *arg;
+{
+	struct	dl_softc *sc = arg;
+	register struct tty *tp;
+	register int cc;
+	register unsigned c;
+
+	if (DL_READ_WORD(DL_UBA_RCSR) & DL_RCSR_RX_DONE) {
+	        c = DL_READ_WORD(DL_UBA_RBUF);
+		cc = c & 0xFF;
+		tp = sc->sc_tty;
+
+		if (!(tp->t_state & TS_ISOPEN)) {
+			wakeup((caddr_t)&tp->t_rawq);
+			return;
+		}
+
+		if (c & DL_RBUF_OVERRUN_ERR)
+			/*
+			 * XXX: This should really be logged somwhere
+			 * else where we can afford the time.
+			 */
+			log(LOG_WARNING, "%s: rx overrun\n",
+			    sc->sc_dev.dv_xname);
+		if (c & DL_RBUF_FRAMING_ERR)
+			cc |= TTY_FE;
+		if (c & DL_RBUF_PARITY_ERR)
+			cc |= TTY_PE;
+
+		(*linesw[tp->t_line].l_rint)(cc, tp);
+	} else
+		log(LOG_WARNING, "%s: stray rx interrupt\n",
+		    sc->sc_dev.dv_xname);
+	return;
+}
+
+/* Transmitter Interrupt Handler */
+
+static void
+dlxint(arg)
+	void *arg;
+{
+	struct dl_softc *sc = arg;
+	register struct tty *tp;
+	
+	tp = sc->sc_tty;
+	tp->t_state &= ~(TS_BUSY | TS_FLUSH);
+	if (tp->t_line)
+		(*linesw[tp->t_line].l_start)(tp);
+	else
+		dlstart(tp);
+       
+	return;
+}
+
+int
+dlopen(dev, flag, mode, p)
+	dev_t dev;
+	int flag, mode;
+	struct proc *p;
+{
+	register struct tty *tp;
+	register int unit;
+	struct dl_softc *sc;
+
+	unit = minor(dev);
+
+	if (unit >= dl_cd.cd_ndevs || dl_cd.cd_devs[unit] == NULL)
+		return ENXIO;
+	sc = dl_cd.cd_devs[unit];
+
+	tp = sc->sc_tty;
+	if (tp == NULL)
+		return ENODEV;
+	tp->t_oproc = dlstart;
+	tp->t_param = dlparam;
+	tp->t_dev = dev;
+
+	if (!(tp->t_state & TS_ISOPEN)) {
+		ttychars(tp);
+		tp->t_iflag = TTYDEF_IFLAG;
+		tp->t_oflag = TTYDEF_OFLAG;
+		/* No modem control, so set CLOCAL. */
+		tp->t_cflag = TTYDEF_CFLAG | CLOCAL;
+		tp->t_lflag = TTYDEF_LFLAG;
+		tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
+		
+		dlparam(tp, &tp->t_termios);
+		ttsetwater(tp);
+		
+	} else if ((tp->t_state & TS_XCLUDE) && p->p_ucred->cr_uid != 0)
+		return EBUSY;
+
+	return ((*linesw[tp->t_line].l_open)(dev, tp));
+}
+
+/*ARGSUSED*/
+int
+dlclose(dev, flag, mode, p)
+	dev_t dev;
+	int flag, mode;
+	struct proc *p;
+{
+	struct dl_softc *sc;
+	register struct tty *tp;
+	register int unit;
+
+	unit = minor(dev);
+	sc = dl_cd.cd_devs[unit];
+      	tp = sc->sc_tty;
+
+	(*linesw[tp->t_line].l_close)(tp, flag);
+
+	/* Make sure a BREAK state is not left enabled. */
+	dlbrk(sc, 0);
+
+	return (ttyclose(tp));
+}
+
+int
+dlread(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	register struct tty *tp;
+	struct dl_softc *sc;
+	register int unit;
+
+	unit = minor(dev);
+	sc = dl_cd.cd_devs[unit];
+	tp = sc->sc_tty;
+	return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
+}
+
+int
+dlwrite(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	register struct tty *tp;
+	struct dl_softc *sc;
+	register int unit;
+
+	unit = minor(dev);
+	sc = dl_cd.cd_devs[unit];
+	tp = sc->sc_tty;
+	return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
+}
+
+int
+dlioctl(dev, cmd, data, flag, p)
+	dev_t dev;
+        int cmd;
+        caddr_t data;
+        int flag;
+        struct proc *p;
+{
+	struct dl_softc *sc;
+        register struct tty *tp;
+        register int unit;
+        int error;
+
+	unit = minor(dev);
+	sc = dl_cd.cd_devs[unit];
+	tp = sc->sc_tty;
+
+        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) {
+	       
+        case TIOCSBRK:
+                dlbrk(sc, 1);
+                break;
+
+        case TIOCCBRK:
+                dlbrk(sc, 0);
+                break;
+
+        case TIOCMGET:
+		/* No modem control, assume they're all low. */
+                *(int *)data = 0;
+                break;
+
+        default:
+                return (ENOTTY);
+        }
+        return (0);
+}
+
+struct tty *
+dltty(dev)
+	dev_t dev;
+{
+	register struct dl_softc* sc;
+	
+	sc = dl_cd.cd_devs[minor(dev)];
+	return sc->sc_tty;
+}
+
+void
+dlstop(tp, flag)
+	register struct tty *tp;
+	int flag;
+{
+	register struct dl_softc *sc;
+	int unit, s;
+
+	unit = minor(tp->t_dev);
+	sc = dl_cd.cd_devs[unit];
+
+	s = spltty();
+
+	if (tp->t_state & TS_BUSY)
+                if (!(tp->t_state & TS_TTSTOP))
+                        tp->t_state |= TS_FLUSH;
+        splx(s);
+}
+
+static void
+dlstart(tp)
+	register struct tty *tp;
+{
+	register struct dl_softc *sc;
+	register int unit;
+	int s;
+
+	unit = minor(tp->t_dev);
+	sc = dl_cd.cd_devs[unit];
+
+	s = spltty();
+        if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
+                goto out;
+        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);
+        }
+        if (tp->t_outq.c_cc == 0)
+                goto out;
+
+
+	if (DL_READ_WORD(DL_UBA_XCSR) & DL_XCSR_TX_READY) {
+		tp->t_state |= TS_BUSY;
+		DL_WRITE_BYTE(DL_UBA_XBUFL, getc(&tp->t_outq));
+	}
+out:
+	splx(s);
+	return;
+}
+
+/*ARGSUSED*/
+static int
+dlparam(tp, t)
+        register struct tty *tp;
+        register struct termios *t;
+{
+	/*
+	 * All this kind of stuff (speed, character format, whatever)
+	 * is set by jumpers on the card.  Changing it is thus rather
+	 * tricky for a mere device driver.
+	 */
+	return 0;
+}
+
+static void
+dlbrk(sc, state)
+	register struct dl_softc *sc;
+	int state;
+{
+	int s = spltty();
+
+	if (state) {
+		DL_WRITE_WORD(DL_UBA_XCSR, DL_READ_WORD(DL_UBA_XCSR) |
+		    DL_XCSR_TX_BREAK);
+	} else {
+		DL_WRITE_WORD(DL_UBA_XCSR, DL_READ_WORD(DL_UBA_XCSR) &
+		    ~DL_XCSR_TX_BREAK);
+	}
+	splx(s);
+}