Reviewed by:

Submitted by:
Add the 3com 3C507 card to the if_ie.c driver. The files elink.c and
elink.h are helding routines that are shared between the 3C507 and the
3C509/3C579. if_ie507.h are constant declarations unique to the 3C507.
The code is based on the NetBSD driver if_ie.c donated to NetBSD by
Rafal Boni and then modified by Charles Hannum.

1 files changed, 77 insertions, 0 deletions

diff --git a/sys/i386/isa/elink.c b/sys/i386/isa/elink.c
new file mode 100644
index 0000000..cd00576
--- /dev/null
+++ b/sys/i386/isa/elink.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 1994 Charles Hannum.  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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Charles Hannum.
+ * 4. 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.
+ *
+ *	$Id: elink.c,v 1.1 1994/05/25 20:06:40 ats Exp $
+ */
+
+/*
+ * Common code for dealing with 3COM ethernet cards.
+ */
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+#include <machine/pio.h>
+#include <i386/isa/elink.h>
+
+/*
+ * Issue a `global reset' to all cards.  We have to be careful to do this only
+ * once during autoconfig, to prevent resetting boards that have already been
+ * configured.
+ */
+void
+elink_reset()
+{  
+	static int x = 0;
+
+	if (x == 0) {
+		x = 1;
+		outb(ELINK_ID_PORT, ELINK_RESET);
+	}
+}
+
+/*
+ * The `ID sequence' is really just snapshots of an 8-bit CRC register as 0
+ * bits are shifted in.  Different board types use different polynomials.
+ */
+void
+elink_idseq(p)
+	register u_char p;
+{
+	register int i;
+	register u_char c;
+
+	c = 0xff;
+	for (i = 255; i; i--) {
+		outb(ELINK_ID_PORT, c);
+		if (c & 0x80) {
+			c <<= 1;
+			c ^= p;
+		} else
+			c <<= 1;
+	}
+}