netdev - [PATCH v1] tg3: optionally use eth_platform_get_mac

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Date:   Sat, 17 Nov 2018 10:56:18 -0500
From:   thesven73@...il.com
To:     svendev@...x.com, siva.kallam@...adcom.com, prashant@...adcom.com,
        mchan@...adcom.com, andrew@...n.ch
Cc:     davem@...emloft.net, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, arnd@...db.de
Subject: [PATCH v1] tg3: optionally use eth_platform_get_mac_address() to get mac address

This function will try to determine the mac address via the devicetree,
or via an architecture-specific method (e.g. a PROM on SPARC).

The SPARC-specific code in this driver (#ifdef SPARC) did exactly this,
and is therefore removed.

Note that you can now specify the tg3 mac address via the devicetree,
on any platform, not just SPARC:

Devicetree example:
(see Documentation/devicetree/bindings/pci/pci.txt)

&pcie {
	host@0 {
		#address-cells = <3>;
		#size-cells = <2>;
		reg = <0 0 0 0 0>;
		bcm5778: bcm5778@0 {
			reg = <0 0 0 0 0>;
			mac-address = [CA 11 AB 1E 10 01];
		};
	};
};

Signed-off-by: Sven Van Asbroeck <svendev@...x.com>
---
 drivers/net/ethernet/broadcom/tg3.c | 42 ++---------------------------
 1 file changed, 2 insertions(+), 40 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index e6f28c7942ab..cfffddba06ce 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -66,11 +66,6 @@
 #include <uapi/linux/net_tstamp.h>
 #include <linux/ptp_clock_kernel.h>
 
-#ifdef CONFIG_SPARC
-#include <asm/idprom.h>
-#include <asm/prom.h>
-#endif
-
 #define BAR_0	0
 #define BAR_2	2
 
@@ -16984,32 +16979,6 @@ static int tg3_get_invariants(struct tg3 *tp, const struct pci_device_id *ent)
 	return err;
 }
 
-#ifdef CONFIG_SPARC
-static int tg3_get_macaddr_sparc(struct tg3 *tp)
-{
-	struct net_device *dev = tp->dev;
-	struct pci_dev *pdev = tp->pdev;
-	struct device_node *dp = pci_device_to_OF_node(pdev);
-	const unsigned char *addr;
-	int len;
-
-	addr = of_get_property(dp, "local-mac-address", &len);
-	if (addr && len == ETH_ALEN) {
-		memcpy(dev->dev_addr, addr, ETH_ALEN);
-		return 0;
-	}
-	return -ENODEV;
-}
-
-static int tg3_get_default_macaddr_sparc(struct tg3 *tp)
-{
-	struct net_device *dev = tp->dev;
-
-	memcpy(dev->dev_addr, idprom->id_ethaddr, ETH_ALEN);
-	return 0;
-}
-#endif
-
 static int tg3_get_device_address(struct tg3 *tp)
 {
 	struct net_device *dev = tp->dev;
@@ -17017,10 +16986,8 @@ static int tg3_get_device_address(struct tg3 *tp)
 	int addr_ok = 0;
 	int err;
 
-#ifdef CONFIG_SPARC
-	if (!tg3_get_macaddr_sparc(tp))
+	if (!eth_platform_get_mac_address(&tp->pdev->dev, dev->dev_addr))
 		return 0;
-#endif
 
 	if (tg3_flag(tp, IS_SSB_CORE)) {
 		err = ssb_gige_get_macaddr(tp->pdev, &dev->dev_addr[0]);
@@ -17082,13 +17049,8 @@ static int tg3_get_device_address(struct tg3 *tp)
 		}
 	}
 
-	if (!is_valid_ether_addr(&dev->dev_addr[0])) {
-#ifdef CONFIG_SPARC
-		if (!tg3_get_default_macaddr_sparc(tp))
-			return 0;
-#endif
+	if (!is_valid_ether_addr(&dev->dev_addr[0]))
 		return -EINVAL;
-	}
 	return 0;
 }
 
-- 
2.17.1