initial import of NetBSD tree

1 files changed, 210 insertions, 0 deletions

diff --git a/sys/arch/hp300/stand/devopen.c b/sys/arch/hp300/stand/devopen.c
new file mode 100644
index 00000000000..fe22240ed69
--- /dev/null
+++ b/sys/arch/hp300/stand/devopen.c
@@ -0,0 +1,210 @@
+/*	$NetBSD: devopen.c,v 1.5 1995/08/05 16:47:41 thorpej Exp $	*/
+
+/*-
+ *  Copyright (c) 1993 John Brezak
+ *  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.
+ * 
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/reboot.h>
+
+#include "stand.h"
+#include "samachdep.h"
+
+u_int opendev;
+
+#define ispart(c)	((c) >= 'a' && (c) <= 'h')
+
+atoi(char *cp)
+{
+    int val = 0;
+    while(isdigit(*cp))
+	val = val * 10 + (*cp++ - '0');
+    return(val);
+}
+
+usage()
+{
+    printf("\
+Usage: device(adaptor, controller, drive, partition)file\n\
+       <device><unit><partitionletter>:file\n\
+");
+}
+
+devlookup(d, len)
+	const char *d;
+	int len;
+{
+    struct devsw *dp = devsw;
+    int i;
+    
+    for (i = 0; i < ndevs; i++, dp++)
+	if (dp->dv_name && strncmp(dp->dv_name, d, len) == 0)
+	    return(i);
+
+    printf("No such device - Configured devices are:\n");
+    for (dp = devsw, i = 0; i < ndevs; i++, dp++)
+	if (dp->dv_name)
+	    printf(" %s", dp->dv_name);
+    printf("\n");
+    errno = ENODEV;
+    return(-1);
+}
+
+/*
+ * Parse a device spec in one of two forms.
+ *
+ * dev(adapt, ctlr, unit, part)file
+ * [A-Za-z]*[0-9]*[A-Za-z]:file
+ *    dev   unit  part
+ */
+devparse(fname, dev, adapt, ctlr, unit, part, file)
+	const char *fname;
+	int *dev, *adapt, *ctlr, *unit, *part;
+	char **file;
+{
+    int *argp, i;
+    char *s, *args[4];
+    
+    /* get device name and make lower case */
+    for (s = (char *)fname; *s && *s != '/' && *s != ':' && *s != '('; s++)
+	if (isupper(*s)) *s = tolower(*s);
+
+    /* first form */
+    if (*s == '(') {
+	/* lookup device and get index */
+	if ((*dev = devlookup(fname, s - fname)) < 0)
+	    goto baddev;
+
+	/* tokenize device ident */
+	args[0] = ++s;
+	for (args[0] = s, i = 1; *s && *s != ')'; s++) {
+	    if (*s == ',')
+		args[i++] = ++s;
+	}
+	switch(i) {
+	case 4:
+	    *adapt = atoi(args[0]);
+	    *ctlr  = atoi(args[1]);
+	    *unit  = atoi(args[2]);
+	    *part  = atoi(args[3]);
+	    break;
+	case 3:
+	    *ctlr  = atoi(args[0]);
+	    *unit  = atoi(args[1]);
+	    *part  = atoi(args[2]);
+	    break;
+	case 2:
+	    *unit  = atoi(args[0]);
+	    *part  = atoi(args[1]);
+	    break;
+	case 1:
+	    *part  = atoi(args[0]);
+	    break;
+	case 0:
+	    break;
+	}
+	*file = ++s;
+    }
+
+    /* second form */
+    else if (*s == ':') {
+	int unit;
+
+	/* isolate device */
+	for (s = (char *)fname; *s != ':' && !isdigit(*s); s++);
+	
+	/* lookup device and get index */
+	if ((*dev = devlookup(fname, s - fname)) < 0)
+	    goto baddev;
+
+	/* isolate unit */
+	if ((unit = atoi(s)) > 255)
+	    goto bad;
+	*adapt = unit / 8;
+	*ctlr = unit % 8;
+	for (; isdigit(*s); s++);
+	
+	/* translate partition */
+	if (!ispart(*s))
+	    goto bad;
+	
+	*part = *s++ - 'a';
+	if (*s != ':')
+	    goto bad;
+	*file = ++s;
+    }
+
+    /* no device present */
+    else
+	*file = (char *)fname;
+    
+    /* return the remaining unparsed part as the file to boot */
+    return(0);
+    
+ bad:
+    usage();
+
+ baddev:
+    return(-1);
+}    
+
+
+devopen(f, fname, file)
+	struct open_file *f;
+	const char *fname;
+	char **file;
+{
+	int n, error;
+	int dev, adapt, ctlr, unit, part;
+	struct devsw *dp = &devsw[0];
+
+	dev   = B_TYPE(bootdev);
+	adapt = B_ADAPTOR(bootdev);
+	ctlr  = B_CONTROLLER(bootdev);
+	unit  = B_UNIT(bootdev);
+	part  = B_PARTITION(bootdev);
+	
+	if (error = devparse(fname, &dev, &adapt, &ctlr, &unit, &part, file))
+	    return(error);
+	
+	dp = &devsw[dev];
+	
+	if (!dp->dv_open)
+		return(ENODEV);
+
+	opendev = MAKEBOOTDEV(dev, adapt, ctlr, unit, part);
+	
+	f->f_dev = dp;
+    
+	if ((error = (*dp->dv_open)(f, adapt, ctlr, part)) == 0)
+	    return(0);
+	
+	printf("%s(%d,%d,%d,%d): %s\n", devsw[dev].dv_name,
+	    adapt, ctlr, unit, part, strerror(error));
+
+	return(error);
+}