pasemi_mac: Add support for changing mac address

Straightforward. It used to be hardcoded and impossible to override
with ifconfig.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 30 insertions, 0 deletions

diff --git a/drivers/net/pasemi_mac.c b/drivers/net/pasemi_mac.c
index bb88a41b7591..59dea3f829fc 100644
--- a/drivers/net/pasemi_mac.c
+++ b/drivers/net/pasemi_mac.c
@@ -221,6 +221,33 @@ static int pasemi_get_mac_addr(struct pasemi_mac *mac)
         return 0;
 }
 
+static int pasemi_mac_set_mac_addr(struct net_device *dev, void *p)
+{
+        struct pasemi_mac *mac = netdev_priv(dev);
+        struct sockaddr *addr = p;
+        unsigned int adr0, adr1;
+
+        if (!is_valid_ether_addr(addr->sa_data))
+                return -EINVAL;
+
+        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+
+        adr0 = dev->dev_addr[2] << 24 |
+               dev->dev_addr[3] << 16 |
+               dev->dev_addr[4] << 8 |
+               dev->dev_addr[5];
+        adr1 = read_mac_reg(mac, PAS_MAC_CFG_ADR1);
+        adr1 &= ~0xffff;
+        adr1 |= dev->dev_addr[0] << 8 | dev->dev_addr[1];
+
+        pasemi_mac_intf_disable(mac);
+        write_mac_reg(mac, PAS_MAC_CFG_ADR0, adr0);
+        write_mac_reg(mac, PAS_MAC_CFG_ADR1, adr1);
+        pasemi_mac_intf_enable(mac);
+
+        return 0;
+}
+
 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
                        void **tcph, u64 *hdr_flags, void *data)
 {
@@ -1475,6 +1502,7 @@ pasemi_mac_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
         dev->stop = pasemi_mac_close;
         dev->hard_start_xmit = pasemi_mac_start_tx;
         dev->set_multicast_list = pasemi_mac_set_rx_mode;
+        dev->set_mac_address = pasemi_mac_set_mac_addr;
 
         if (err)
                 goto out;
diff --git a/drivers/net/pasemi_mac.h b/drivers/net/pasemi_mac.h
index 8bee2a664c83..39d325940a76 100644
--- a/drivers/net/pasemi_mac.h
+++ b/drivers/net/pasemi_mac.h
@@ -96,6 +96,8 @@ struct pasemi_mac_buffer {
 /* MAC CFG register offsets */
 enum {
         PAS_MAC_CFG_PCFG = 0x80,
+        PAS_MAC_CFG_ADR0 = 0x8c,
+        PAS_MAC_CFG_ADR1 = 0x90,
         PAS_MAC_CFG_TXP = 0x98,
         PAS_MAC_IPC_CHNL = 0x208,
 };