[PATCH v4 5/9] net: pxa168_eth: set the mac address on the Ethernet controller

Antoine Tenart
2014-09-23T12:17:55Z

When changing the MAC address, in addition to updating the dev_addr in
the net_device structure, this patch also update the MAC address
registers (high and low) of the Ethernet controller with the new MAC.
The address stored in these registers is used for IEEE 802.3x Ethernet
flow control, which is already enabled.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
---
drivers/net/ethernet/marvell/pxa168_eth.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/marvell/pxa168_eth.c b/drivers/net/ethernet/marvell/pxa168_eth.c
index 5aa2ce2625b4..897589455186 100644
--- a/drivers/net/ethernet/marvell/pxa168_eth.c
+++ b/drivers/net/ethernet/marvell/pxa168_eth.c
@@ -60,6 +60,8 @@
#define PORT_COMMAND 0x0410
#define PORT_STATUS 0x0418
#define HTPR 0x0428
+#define MAC_ADDR_LOW 0x0430
+#define MAC_ADDR_HIGH 0x0438
#define SDMA_CONFIG 0x0440
#define SDMA_CMD 0x0448
#define INT_CAUSE 0x0450
@@ -609,11 +611,22 @@ static int pxa168_eth_set_mac_address(struct net_device *dev, void *addr)
struct sockaddr *sa = addr;
struct pxa168_eth_private *pep = netdev_priv(dev);
unsigned char oldMac[ETH_ALEN];
+ u32 mac_h, mac_l;

if (!is_valid_ether_addr(sa->sa_data))
return -EADDRNOTAVAIL;
memcpy(oldMac, dev->dev_addr, ETH_ALEN);
memcpy(dev->dev_addr, sa->sa_data, ETH_ALEN);
+
+ mac_h = sa->sa_data[0] << 24;
+ mac_h |= sa->sa_data[1] << 16;
+ mac_h |= sa->sa_data[2] << 8;
+ mac_h |= sa->sa_data[3];
+ mac_l = sa->sa_data[4] << 8;
+ mac_l |= sa->sa_data[5];
+ wrl(pep, MAC_ADDR_HIGH, mac_h);
+ wrl(pep, MAC_ADDR_LOW, mac_l);
+
netif_addr_lock_bh(dev);
update_hash_table_mac_address(pep, oldMac, dev->dev_addr);
netif_addr_unlock_bh(dev);
--
1.9.1