From ec6a729924f27fcf905d0ed8683ee9c1d61f43c8 Mon Sep 17 00:00:00 2001
From: Maxime Henrion <mux@FreeBSD.org>
Date: Thu, 8 Jan 2004 19:08:27 +0000
Subject: [PATCH] Some integrated Davicom cards in sparc64 boxes have an all
 zeros MAC address in the EEPROM, and we need to get it from OpenFirmware.
 This isn't very pretty but time is lacking to do this in a better way this
 near 5.2-RELEASE.  This is a RELENG_5_2 candidate.

Original version by:	Marius Strobl <marius@alchemy.franken.de>
Tested by:		Pete Bentley <pete@sorted.org>
Reviewed by:		jake
---
 sys/dev/dc/if_dc.c                | 18 ++++++++++++++++++
 sys/pci/if_dc.c                   | 18 ++++++++++++++++++
 sys/sparc64/include/ofw_machdep.h |  1 +
 sys/sparc64/sparc64/ofw_machdep.c | 17 +++++++++++++++++
 4 files changed, 54 insertions(+)

diff --git a/sys/dev/dc/if_dc.c b/sys/dev/dc/if_dc.c
index 6068194eab7b..ac095cdc41fb 100644
--- a/sys/dev/dc/if_dc.c
+++ b/sys/dev/dc/if_dc.c
@@ -131,6 +131,11 @@ __FBSDID("$FreeBSD$");
 
 #include <pci/if_dcreg.h>
 
+#ifdef __sparc64__
+#include <dev/ofw/openfirm.h>
+#include <machine/ofw_machdep.h>
+#endif
+
 MODULE_DEPEND(dc, pci, 1, 1, 1);
 MODULE_DEPEND(dc, ether, 1, 1, 1);
 MODULE_DEPEND(dc, miibus, 1, 1, 1);
@@ -2106,6 +2111,19 @@ dc_attach(device_t dev)
 		dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1);
 		break;
 	case DC_TYPE_DM9102:
+		dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
+#ifdef __sparc64__
+		/*
+		 * If this is an onboard dc(4) the station address read from
+		 * the EEPROM is all zero and we have to get it from the fcode.
+		 */
+		for (i = 0; i < ETHER_ADDR_LEN; i++)
+			if (eaddr[i] != 0x00)
+				break;
+		if (i >= ETHER_ADDR_LEN && OF_getetheraddr2(dev, eaddr) == -1)
+			OF_getetheraddr(dev, eaddr);
+#endif
+		break;
 	case DC_TYPE_21143:
 	case DC_TYPE_ASIX:
 		dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
diff --git a/sys/pci/if_dc.c b/sys/pci/if_dc.c
index 6068194eab7b..ac095cdc41fb 100644
--- a/sys/pci/if_dc.c
+++ b/sys/pci/if_dc.c
@@ -131,6 +131,11 @@ __FBSDID("$FreeBSD$");
 
 #include <pci/if_dcreg.h>
 
+#ifdef __sparc64__
+#include <dev/ofw/openfirm.h>
+#include <machine/ofw_machdep.h>
+#endif
+
 MODULE_DEPEND(dc, pci, 1, 1, 1);
 MODULE_DEPEND(dc, ether, 1, 1, 1);
 MODULE_DEPEND(dc, miibus, 1, 1, 1);
@@ -2106,6 +2111,19 @@ dc_attach(device_t dev)
 		dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1);
 		break;
 	case DC_TYPE_DM9102:
+		dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
+#ifdef __sparc64__
+		/*
+		 * If this is an onboard dc(4) the station address read from
+		 * the EEPROM is all zero and we have to get it from the fcode.
+		 */
+		for (i = 0; i < ETHER_ADDR_LEN; i++)
+			if (eaddr[i] != 0x00)
+				break;
+		if (i >= ETHER_ADDR_LEN && OF_getetheraddr2(dev, eaddr) == -1)
+			OF_getetheraddr(dev, eaddr);
+#endif
+		break;
 	case DC_TYPE_21143:
 	case DC_TYPE_ASIX:
 		dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0);
diff --git a/sys/sparc64/include/ofw_machdep.h b/sys/sparc64/include/ofw_machdep.h
index f7062f7f939a..c40a7bcdd32c 100644
--- a/sys/sparc64/include/ofw_machdep.h
+++ b/sys/sparc64/include/ofw_machdep.h
@@ -32,6 +32,7 @@
 
 int  OF_decode_addr(phandle_t, int *, bus_addr_t *);
 void OF_getetheraddr(device_t, u_char *);
+int  OF_getetheraddr2(device_t, u_char *);
 void cpu_shutdown(void *);
 void openfirmware_exit(void *);
 
diff --git a/sys/sparc64/sparc64/ofw_machdep.c b/sys/sparc64/sparc64/ofw_machdep.c
index b50b4dfc9900..c565a455a833 100644
--- a/sys/sparc64/sparc64/ofw_machdep.c
+++ b/sys/sparc64/sparc64/ofw_machdep.c
@@ -29,6 +29,8 @@
  * Some OpenFirmware helper functions that are likely machine dependent.
  */
 
+#include "opt_ofw_pci.h"
+
 #include <sys/param.h>
 #include <sys/systm.h>
 
@@ -58,6 +60,21 @@ OF_getetheraddr(device_t dev, u_char *addr)
 	bcopy(&idp.id_ether, addr, ETHER_ADDR_LEN);
 }
 
+int
+OF_getetheraddr2(device_t dev, u_char *addr)
+{
+	phandle_t node;
+
+#ifdef OFW_NEWPCI
+	node = ofw_pci_get_node(dev);
+#else
+	node = ofw_pci_node(dev);
+#endif
+	if (node <= 0)
+	       return (-1);
+	return (OF_getprop(node, "local-mac-address", addr, ETHER_ADDR_LEN));
+}
+
 int
 OF_decode_addr(phandle_t node, int *space, bus_addr_t *addr)
 {