SGI 1-Wire Number-In-a-Can drivers. These are regular Dallas/Maxim append-only

EEPROM, with knowledge of how SGI formats their contents. They are needed
by IOC to figure out the Ethernet address of its Ethernet subdevice (yes,
verily).

1 files changed, 35 insertions, 0 deletions

diff --git a/sys/arch/sgi/dev/owmacvar.h b/sys/arch/sgi/dev/owmacvar.h
new file mode 100644
index 00000000000..14b6456dcb5
--- /dev/null
+++ b/sys/arch/sgi/dev/owmacvar.h
@@ -0,0 +1,35 @@
+/*	$OpenBSD: owmacvar.h,v 1.1 2008/04/07 22:55:57 miod Exp $	*/
+
+/*
+ * Copyright (c) 2008 Miodrag Vallat.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * DS1981/1982/2502 1-Wire Add-only memory driver, for SGI machines.
+ *
+ * SGI uses DS1981 (or compatibles) to store the Ethernet address
+ * on IOC boards.
+ */
+
+struct owmac_softc {
+	struct device	 sc_dev;
+
+	void		*sc_onewire;
+	uint64_t	 sc_rom;
+
+	uint8_t		 sc_redir[4];		/* redirection table */
+
+	uint8_t		 sc_enaddr[6];
+};