+static __u8
+jme_smb_read(struct jme_adapter *jme, unsigned int addr)
+{
+ __u32 val;
+ int to;
+
+ val = jread32(jme, JME_SMBCSR);
+ to = JME_SMB_BUSY_TIMEOUT;
+ while((val & SMBCSR_BUSY) && --to) {
+ msleep(1);
+ val = jread32(jme, JME_SMBCSR);
+ }
+ if(!to) {
+ jeprintk(jme->dev->name, "SMB Bus Busy.\n");
+ return 0xFF;
+ }
+
+ jwrite32(jme, JME_SMBINTF,
+ ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
+ SMBINTF_HWRWN_READ |
+ SMBINTF_HWCMD);
+
+ val = jread32(jme, JME_SMBINTF);
+ to = JME_SMB_BUSY_TIMEOUT;
+ while((val & SMBINTF_HWCMD) && --to) {
+ msleep(1);
+ val = jread32(jme, JME_SMBINTF);
+ }
+ if(!to) {
+ jeprintk(jme->dev->name, "SMB Bus Busy.\n");
+ return 0xFF;
+ }
+
+ return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
+}
+
+static void
+jme_smb_write(struct jme_adapter *jme, unsigned int addr, __u8 data)
+{
+ __u32 val;
+ int to;
+
+ val = jread32(jme, JME_SMBCSR);
+ to = JME_SMB_BUSY_TIMEOUT;
+ while((val & SMBCSR_BUSY) && --to) {
+ msleep(1);
+ val = jread32(jme, JME_SMBCSR);
+ }
+ if(!to) {
+ jeprintk(jme->dev->name, "SMB Bus Busy.\n");
+ return;
+ }
+
+ jwrite32(jme, JME_SMBINTF,
+ ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
+ ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
+ SMBINTF_HWRWN_WRITE |
+ SMBINTF_HWCMD);
+
+ val = jread32(jme, JME_SMBINTF);
+ to = JME_SMB_BUSY_TIMEOUT;
+ while((val & SMBINTF_HWCMD) && --to) {
+ msleep(1);
+ val = jread32(jme, JME_SMBINTF);
+ }
+ if(!to) {
+ jeprintk(jme->dev->name, "SMB Bus Busy.\n");
+ return;
+ }
+
+ mdelay(2);
+}
+
+static int
+jme_get_eeprom_len(struct net_device *netdev)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+ __u32 val;
+ val = jread32(jme, JME_SMBCSR);
+ return (val & SMBCSR_EEPROMD)?JME_SMB_LEN:0;
+}
+
+static int
+jme_get_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+ int i, offset = eeprom->offset, len = eeprom->len;
+
+ /*
+ * ethtool will check the boundary for us
+ */
+ eeprom->magic = JME_EEPROM_MAGIC;
+ for(i = 0 ; i < len ; ++i)
+ data[i] = jme_smb_read(jme, i + offset);
+
+ return 0;
+}
+
+static int
+jme_set_eeprom(struct net_device *netdev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ struct jme_adapter *jme = netdev_priv(netdev);
+ int i, offset = eeprom->offset, len = eeprom->len;
+
+ if (eeprom->magic != JME_EEPROM_MAGIC)
+ return -EINVAL;
+
+ /*
+ * ethtool will check the boundary for us
+ */
+ for(i = 0 ; i < len ; ++i)
+ jme_smb_write(jme, i + offset, data[i]);
+
+ return 0;
+}
+