initial import of NetBSD tree

1 files changed, 381 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/kd.c b/sys/arch/sun3/dev/kd.c
new file mode 100644
index 00000000000..12826032f73
--- /dev/null
+++ b/sys/arch/sun3/dev/kd.c
@@ -0,0 +1,381 @@
+/*	$NetBSD: kd.c,v 1.13 1995/04/26 23:20:15 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1994, 1995 Gordon W. Ross
+ * 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. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 4. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Gordon Ross
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/*
+ * Keyboard/Display device.
+ *
+ * This driver exists simply to provide a tty device that
+ * the indirect console driver can point to.
+ * The kbd driver sends its input here.
+ * Output goes to the screen via PROM printf.
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/systm.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/file.h>
+#include <sys/conf.h>
+#include <sys/device.h>
+
+#include <machine/autoconf.h>
+#include <machine/mon.h>
+#include <machine/psl.h>
+
+#include <dev/cons.h>
+
+#define BURST	64
+
+/*
+ * There is no point in pretending there might be
+ * more than one keyboard/display device.
+ */
+struct tty *kd_tty[1];
+
+int kdopen(dev_t, int, int, struct proc *);
+int kdclose(dev_t, int, int, struct proc *);
+int kdread(dev_t, struct uio *, int);
+int kdwrite(dev_t, struct uio *, int);
+int kdioctl(dev_t, int, caddr_t, int, struct proc *);
+
+static int kdparam(struct tty *, struct termios *);
+static void kdstart(struct tty *);
+
+int kd_is_console;
+
+/* This is called by kbd_serial() like a pseudo-device. */
+void
+kd_attach(n)
+	int n;
+{
+	kd_tty[0] = ttymalloc();
+
+	/* Tell keyboard module where to send read data. */
+	kbd_ascii(kd_tty[0]);
+}
+
+struct tty *
+kdtty(dev)
+	dev_t dev;
+{
+	return kd_tty[0];
+}
+
+int
+kdopen(dev, flag, mode, p)
+	dev_t dev;
+	int flag, mode;
+	struct proc *p;
+{
+	int error, unit;
+	struct tty *tp;
+	
+	unit = minor(dev);
+	if (unit) return ENXIO;
+
+	tp = kd_tty[unit];
+	if (tp == NULL)
+		return ENXIO;
+
+	if ((error = kbd_iopen()) != 0) {
+#ifdef	DIAGNOSTIC
+		printf("kd: kbd_iopen, error=%d\n", error);
+#endif
+		return (error);
+	}
+
+	tp->t_oproc = kdstart;
+	tp->t_param = kdparam;
+	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;
+		kdparam(tp, &tp->t_termios);
+		ttsetwater(tp);
+	} else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
+		return EBUSY;
+	tp->t_state |= TS_CARR_ON;
+
+	return ((*linesw[tp->t_line].l_open)(dev, tp));
+}
+
+int
+kdclose(dev, flag, mode, p)
+	dev_t dev;
+	int flag, mode;
+	struct proc *p;
+{
+	int unit = minor(dev);
+	struct tty *tp = kd_tty[unit];
+
+	(*linesw[tp->t_line].l_close)(tp, flag);
+	ttyclose(tp);
+	return (0);
+}
+
+int
+kdread(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	int unit = minor(dev);
+	struct tty *tp = kd_tty[unit];
+
+	return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
+}
+
+int
+kdwrite(dev, uio, flag)
+	dev_t dev;
+	struct uio *uio;
+	int flag;
+{
+	int unit = minor(dev);
+	struct tty *tp = kd_tty[unit];
+
+	return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
+}
+
+int
+kdstop(tp, flag)
+	struct tty *tp;
+	int flag;
+{
+
+}
+
+int
+kdioctl(dev, cmd, data, flag, p)
+	dev_t dev;
+	int cmd;
+	caddr_t data;
+	int flag;
+	struct proc *p;
+{
+	int error;
+	int unit = minor(dev);
+	struct tty *tp = kd_tty[unit];
+
+	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;
+
+	/* Handle any ioctl commands specific to kbd/display. */
+	/* XXX - Send KB* ioctls to kbd module? */
+	/* XXX - Send FB* ioctls to fb module?  */
+
+	return ENOTTY;
+}
+
+static void kd_later(void*);
+static void kd_putfb(struct tty *);
+
+void
+kdstart(tp)
+	struct tty *tp;
+{
+	struct clist *cl;
+	register int s;
+
+	s = spltty();
+	if (tp->t_state & (TS_BUSY|TS_TTSTOP|TS_TIMEOUT))
+		goto out;
+
+	cl = &tp->t_outq;
+	if (cl->c_cc) {
+		if (kd_is_console) {
+			tp->t_state |= TS_BUSY;
+			if ((s & PSL_IPL) == 0) {
+				/* called at level zero - update screen now. */
+				(void) splsoftclock();
+				kd_putfb(tp);
+				(void) spltty();
+				tp->t_state &= ~TS_BUSY;
+			} else {
+				/* called at interrupt level - do it later */
+				timeout(kd_later, (void*)tp, 0);
+			}
+		} else {
+			/*
+			 * This driver uses the PROM for writing the screen,
+			 * and that only works if this is the console device.
+			 * If this is not the console, just flush the output.
+			 * Sorry.  (In that case, use xdm instead of getty.)
+			 */
+			ndflush(cl, cl->c_cc);
+		}
+	}
+	if (cl->c_cc <= tp->t_lowat) {
+		if (tp->t_state & TS_ASLEEP) {
+			tp->t_state &= ~TS_ASLEEP;
+			wakeup((caddr_t)cl);
+		}
+		selwakeup(&tp->t_wsel);
+	}
+out:
+	splx(s);
+}
+
+/*
+ * Timeout function to do delayed writes to the screen.
+ * Called at splsoftclock when requested by kdstart.
+ */
+static void
+kd_later(tpaddr)
+	void *tpaddr;
+{
+	struct tty *tp = tpaddr;
+	register int s;
+
+	kd_putfb(tp);
+
+	s = spltty();
+	tp->t_state &= ~TS_BUSY;
+	if (tp->t_line)
+		(*linesw[tp->t_line].l_start)(tp);
+	else
+		kdstart(tp);
+	splx(s);
+}
+
+/*
+ * Put text on the screen using the PROM monitor.
+ * This can take a while, so to avoid missing
+ * interrupts, this is called at splsoftclock.
+ */
+static void kd_putfb(tp)
+	struct tty *tp;
+{
+	char buf[BURST];
+	struct clist *cl = &tp->t_outq;
+	char *p, *end;
+	int len;
+
+	while ((len = q_to_b(cl, buf, BURST-1)) > 0) {
+		/* PROM will barf if high bits are set. */
+		p = buf;
+		end = buf + len;
+		while (p < end)
+			*p++ &= 0x7f;
+		(romVectorPtr->fbWriteStr)(buf, len);
+	}
+}
+
+
+static int
+kdparam(tp, t)
+	struct tty *tp;
+	struct termios *t;
+{
+	/* XXX - These are ignored... */
+	tp->t_ispeed = t->c_ispeed;
+	tp->t_ospeed = t->c_ospeed;
+	tp->t_cflag = t->c_cflag;
+	return 0;
+}
+
+
+/*
+ * kd console support
+ */
+
+extern int zscnprobe_kbd(), zscngetc(), kbd_translate();
+
+kdcnprobe(cp)
+	struct consdev *cp;
+{
+	int maj;
+
+	/* locate the major number */
+	for (maj = 0; maj < nchrdev; maj++)
+		if (cdevsw[maj].d_open == (void*)kdopen)
+			break;
+
+	/* initialize required fields */
+	cp->cn_dev = makedev(maj, 0);
+	cp->cn_pri = zscnprobe_kbd();
+}
+
+kdcninit(cp)
+	struct consdev *cp;
+{
+
+	/* This prepares zscngetc() */
+	zs_set_conschan(1, 0);
+
+	/* This prepares kbd_translate() */
+	kbd_init_tables();
+
+	/* Indicate that it is OK to use the PROM fbwrite */
+	kd_is_console = 1;
+
+	mon_printf("console on kd0 (keyboard/display)\n");
+}
+
+kdcngetc(dev)
+	dev_t dev;
+{
+	int c;
+
+	do {
+		c = zscngetc(0);
+		c = kbd_translate(c);
+	} while (c == -1);
+
+	return (c);
+}
+
+kdcnputc(dev, c)
+	dev_t dev;
+	int c;
+{
+	(romVectorPtr->fbWriteChar)(c & 0x7f);
+}
+
+extern void fb_unblank();
+void kdcnpollc(dev, on)
+	dev_t dev;
+	int on;
+{
+	if (on)
+		fb_unblank();
+}