More history. HASH is not a good idea, changes too often.

1 files changed, 282 insertions, 0 deletions

diff --git a/History/rcons/rcons_kern.c b/History/rcons/rcons_kern.c
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+++ b/History/rcons/rcons_kern.c
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+/*
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * 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, Lawrence Berkeley Laboratories.
+ *
+ * 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.
+ *
+ *	@(#)rcons_kern.c	7.2 (Berkeley) 7/21/92
+ *
+ * from: $Header: rcons_kern.c,v 1.26 92/07/09 08:01:28 torek Exp $
+ */
+
+#include "sys/param.h"
+#include "sys/device.h"
+#include "sys/fbio.h"
+#include "sys/kernel.h"
+#include "sys/systm.h"
+#include "sys/ioctl.h"
+#include "sys/tty.h"
+
+#include "machine/fbvar.h"
+#include "machine/autoconf.h"
+
+#include "../dev/kbd.h"
+
+#include "raster.h"
+
+extern struct tty *fbconstty;
+
+static void rcons_belltmr(void *);
+
+extern void rcons_puts(struct fbdevice *, char *, int);
+extern void rcons_font(struct fbdevice *);
+
+extern int (*v_putc)();
+extern void ttrstrt(void *);
+
+static struct fbdevice *myfbdevicep;
+
+static void
+rcons_cnputc(c)
+	int c;
+{
+	char buf[1];
+
+	if (c == '\n')
+		rcons_puts(myfbdevicep, "\r\n", 2);
+	else {
+		buf[0] = c;
+		rcons_puts(myfbdevicep, buf, 1);
+	}
+}
+
+static void
+rcons_output(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) */
+	rcons_puts(myfbdevicep, 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);
+}
+
+/* Ring the console bell */
+void
+rcons_bell(fb)
+	register struct fbdevice *fb;
+{
+	register int i, s;
+
+	if (fb->fb_bits & FB_VISBELL) {
+		/* invert the screen twice */
+		for (i = 0; i < 2; ++i)
+			raster_op(fb->fb_sp, 0, 0,
+			    fb->fb_sp->width, fb->fb_sp->height,
+			    RAS_INVERT, (struct raster *) 0, 0, 0);
+	}
+
+	s = splhigh();
+	if (fb->fb_belldepth++) {
+		if (fb->fb_belldepth > 3)
+			fb->fb_belldepth = 3;
+		splx(s);
+	} else {
+		fb->fb_ringing = 1;
+		splx(s);
+		(void) kbd_docmd(KBD_CMD_BELL, 0);
+		/* XXX Chris doesn't like the following divide */
+		timeout(rcons_belltmr, fb, hz/10);
+	}
+}
+
+/* Bell timer service routine */
+static void
+rcons_belltmr(p)
+	void *p;
+{
+	register struct fbdevice *fb = p;
+	register int s = splhigh(), i;
+
+	if (fb->fb_ringing) {
+		fb->fb_ringing = 0;
+		i = --fb->fb_belldepth;
+		splx(s);
+		(void) kbd_docmd(KBD_CMD_NOBELL, 0);
+		if (i != 0)
+			/* XXX Chris doesn't like the following divide */
+			timeout(rcons_belltmr, fb, hz/30);
+	} else {
+		fb->fb_ringing = 1;
+		splx(s);
+		(void) kbd_docmd(KBD_CMD_BELL, 0);
+		timeout(rcons_belltmr, fb, hz/10);
+	}
+}
+
+static int
+rcons_a2int(cp, deflt)
+	register char *cp;
+	register int deflt;
+{
+	register int i = 0;
+
+	if (*cp == '\0')
+		return (deflt);
+	while (*cp != '\0')
+		i = i * 10 + *cp++ - '0';
+	return (i);
+}
+
+void
+rcons_init(fb)
+	register struct fbdevice *fb;
+{
+	/* XXX this should go away */
+	static struct raster xxxraster;
+	register struct raster *rp = fb->fb_sp = &xxxraster;
+	register struct fbtype *ft = &fb->fb_type;
+	register struct winsize *ws;
+	register int i;
+	static int row, col;
+	char buf[100];
+
+	myfbdevicep = fb;
+
+	fb->fb_maxcol =
+	    rcons_a2int(getpropstring(optionsnode, "screen-#columns"), 80);
+	fb->fb_maxrow =
+	    rcons_a2int(getpropstring(optionsnode, "screen-#rows"), 34);
+
+	/* XXX mostly duplicates of data in other places */
+	rp->width = ft->fb_width;
+	rp->height = ft->fb_height;
+	rp->depth = ft->fb_depth;
+	if (fb->fb_linebytes & 0x3) {
+		printf("rcons_init: linebytes assumption botched (0x%x)\n",
+		    fb->fb_linebytes);
+		return;
+	}
+	rp->linelongs = fb->fb_linebytes >> 2;
+	rp->pixels = (u_long *)fb->fb_pixels;
+
+	fb->fb_ras_blank = RAS_CLEAR;
+
+	/* Setup the static font */
+	rcons_font(fb);
+
+	/* Impose upper bounds on fb_max{row,col} */
+	i = ft->fb_height / fb->fb_font->height;
+	if (fb->fb_maxrow > i)
+		fb->fb_maxrow = i;
+	i = ft->fb_width / fb->fb_font->width;
+	if (fb->fb_maxcol > i)
+		fb->fb_maxcol = i;
+
+	/* Let the system know how big the console is */
+	ws = &fbconstty->t_winsize;
+	ws->ws_row = fb->fb_maxrow;
+	ws->ws_col = fb->fb_maxcol;
+	ws->ws_xpixel = ft->fb_width;
+	ws->ws_ypixel = ft->fb_height;
+
+	/* Center emulator screen (but align x origin to 32 bits) */
+	fb->fb_xorigin =
+	    ((ft->fb_width - fb->fb_maxcol * fb->fb_font->width) / 2) & ~0x1f;
+	fb->fb_yorigin =
+	    (ft->fb_height - fb->fb_maxrow * fb->fb_font->height) / 2;
+
+	/* Emulator width and height used for scrolling */
+	fb->fb_emuwidth = fb->fb_maxcol * fb->fb_font->width;
+	if (fb->fb_emuwidth & 0x1f) {
+		/* Pad to 32 bits */
+		i = (fb->fb_emuwidth + 0x1f) & ~0x1f;
+		/* Make sure emulator width isn't too wide */
+		if (fb->fb_xorigin + i <= ft->fb_width)
+			fb->fb_emuwidth = i;
+	}
+	fb->fb_emuheight = fb->fb_maxrow * fb->fb_font->height;
+
+	/* Determine addresses of prom emulator row and column */
+	fb->fb_row = fb->fb_col = NULL;
+	sprintf(buf, "' line# >body >user %x !", &fb->fb_row);
+	rominterpret(buf);
+	sprintf(buf, "' column# >body >user %x !", &fb->fb_col);
+	rominterpret(buf);
+	if (fb->fb_row == NULL || fb->fb_col == NULL) {
+		/* Can't find addresses; use private copies */
+		fb->fb_row = &row;
+		fb->fb_col = &col;
+		row = col = 0;
+		rcons_clear2eop(fb);	/* clear the display */
+		rcons_cursor(fb);	/* and draw the initial cursor */
+	} else {
+		/* Prom emulator cursor is currently visible */
+		fb->fb_bits |= FB_CURSOR;
+	}
+
+	/* Initialization done; hook us up */
+	v_putc = (int (*)())rcons_cnputc;
+	fbconstty->t_oproc = rcons_output;
+	fbconstty->t_stop = (void (*)()) nullop;
+}