From 16c74987cc79d5e54431bd187bfcdff8d98e6ea4 Mon Sep 17 00:00:00 2001
From: simonb <simonb@NetBSD.org>
Date: Sat, 27 Nov 1999 03:08:46 +0000
Subject: [PATCH] Moved from lib/devopen.c,v

---
 sys/arch/pmax/stand/common/devopen.c | 164 +++++++++++++++++++++++++++
 1 file changed, 164 insertions(+)
 create mode 100644 sys/arch/pmax/stand/common/devopen.c

diff --git a/sys/arch/pmax/stand/common/devopen.c b/sys/arch/pmax/stand/common/devopen.c
new file mode 100644
index 000000000000..074e4d29ad5e
--- /dev/null
+++ b/sys/arch/pmax/stand/common/devopen.c
@@ -0,0 +1,164 @@
+/*	$NetBSD: devopen.c,v 1.12 1999/11/27 03:08:47 simonb Exp $	*/
+
+/*-
+ * Copyright (c) 1992, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Ralph Campbell.
+ *
+ * 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.
+ *
+ *	@(#)devopen.c	8.1 (Berkeley) 6/10/93
+ */
+
+#include <stand.h>
+
+/*
+ * Decode the string 'fname', open the device and return the remaining
+ * file name if any.
+ */
+int
+devopen(f, fname, file)
+	struct open_file *f;
+	const char *fname;
+	char **file;	/* out */
+{
+	register const char *cp;
+	register char *ncp;
+	register struct devsw *dp;
+	register int c, i;
+	int ctlr = 0, unit = 0, part = 0;
+	char namebuf[20];
+	int rc;
+
+	cp = fname;
+	ncp = namebuf;
+
+	/* look for a string like '5/rz0/netbsd' or '5/rz3f/netbsd */
+	if ((c = *cp) >= '0' && c <= '9') {
+		ctlr = c - '0';
+		/* skip the '/' */
+		if (*++cp != '/')
+			return (ENXIO);
+		cp++;
+		while ((c = *cp) != '\0') {
+			if (c == '/')
+				break;
+			if (c >= '0' && c <= '9') {
+				/* read unit number */
+				unit = c - '0';
+
+				/* look for a partition */
+				if ((c = *++cp) >= 'a' && c <= 'h') {
+					part = c - 'a';
+					c = *++cp;
+				}
+				if (c != '/')
+					return (ENXIO);
+				break;
+			}
+			if (ncp < namebuf + sizeof(namebuf) - 1)
+				*ncp++ = c;
+			cp++;
+		}
+	} else {
+		/* expect a string like 'rz(0,0,0)netbsd' */
+		while ((c = *cp) != '\0') {
+			if (c == '(') {
+				cp++;
+				break;
+			}
+			if (ncp < namebuf + sizeof(namebuf) - 1)
+				*ncp++ = c;
+			cp++;
+		}
+
+		/* get controller number */
+		if ((c = *cp) >= '0' && c <= '9') {
+			ctlr = c - '0';
+			c = *++cp;
+		}
+
+		if (c == ',') {
+			/* get SCSI device number */
+			if ((c = *++cp) >= '0' && c <= '9') {
+				unit = c - '0';
+				c = *++cp;
+			}
+
+			if (c == ',') {
+				/* get partition number */
+				if ((c = *++cp) >= '0' && c <= '9') {
+					part = c - '0';
+					c = *++cp;
+				}
+			}
+		}
+		if (c != ')')
+			return (ENXIO);
+		cp++;
+	}
+	*ncp = '\0';
+
+#ifdef LIBSA_SINGLE_DEVICE
+	rc = DEV_OPEN(dp)(f, ctlr, unit, part);
+#else
+#ifdef BOOTRZ	/* First stage disk boot loader only knows rz devices */
+	if (strcmp (namebuf, "rz")) {
+		printf ("Unknown device: %s\n", namebuf);
+		return ENXIO;
+	}
+	dp = devsw;
+	i = 0;
+#else
+	for (dp = devsw, i = 0; i < ndevs; dp++, i++)
+		if (dp->dv_name && strcmp(namebuf, dp->dv_name) == 0)
+			goto fnd;
+	printf("Unknown device '%s'\nKnown devices are:", namebuf);
+	for (dp = devsw, i = 0; i < ndevs; dp++, i++)
+		if (dp->dv_name)
+			printf(" %s", dp->dv_name);
+	printf("\n");
+	return (ENXIO);
+
+fnd:
+#endif
+	rc = (dp->dv_open)(f, ctlr, unit, part);
+#endif
+	if (rc)
+		return (rc);
+
+#ifndef LIBSA_SINGLE_DEVICE
+	f->f_dev = dp;
+#endif
+	if (file && *cp != '\0')
+		*file = (char *)cp;	/* XXX */
+	return (0);
+}