smc91x: enable ethtool EEPROM interface
Signed-off-by: Vernon Sauder <vsauder@inhand.com>
Acked-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c
index b215a8d..508e8da 100644
--- a/drivers/net/smc91x.c
+++ b/drivers/net/smc91x.c
@@ -1643,6 +1643,117 @@
lp->msg_enable = level;
}
+static int smc_write_eeprom_word(struct net_device *dev, u16 addr, u16 word)
+{
+ u16 ctl;
+ struct smc_local *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
+
+ spin_lock_irq(&lp->lock);
+ /* load word into GP register */
+ SMC_SELECT_BANK(lp, 1);
+ SMC_SET_GP(lp, word);
+ /* set the address to put the data in EEPROM */
+ SMC_SELECT_BANK(lp, 2);
+ SMC_SET_PTR(lp, addr);
+ /* tell it to write */
+ SMC_SELECT_BANK(lp, 1);
+ ctl = SMC_GET_CTL(lp);
+ SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_STORE));
+ /* wait for it to finish */
+ do {
+ udelay(1);
+ } while (SMC_GET_CTL(lp) & CTL_STORE);
+ /* clean up */
+ SMC_SET_CTL(lp, ctl);
+ SMC_SELECT_BANK(lp, 2);
+ spin_unlock_irq(&lp->lock);
+ return 0;
+}
+
+static int smc_read_eeprom_word(struct net_device *dev, u16 addr, u16 *word)
+{
+ u16 ctl;
+ struct smc_local *lp = netdev_priv(dev);
+ void __iomem *ioaddr = lp->base;
+
+ spin_lock_irq(&lp->lock);
+ /* set the EEPROM address to get the data from */
+ SMC_SELECT_BANK(lp, 2);
+ SMC_SET_PTR(lp, addr | PTR_READ);
+ /* tell it to load */
+ SMC_SELECT_BANK(lp, 1);
+ SMC_SET_GP(lp, 0xffff); /* init to known */
+ ctl = SMC_GET_CTL(lp);
+ SMC_SET_CTL(lp, ctl | (CTL_EEPROM_SELECT | CTL_RELOAD));
+ /* wait for it to finish */
+ do {
+ udelay(1);
+ } while (SMC_GET_CTL(lp) & CTL_RELOAD);
+ /* read word from GP register */
+ *word = SMC_GET_GP(lp);
+ /* clean up */
+ SMC_SET_CTL(lp, ctl);
+ SMC_SELECT_BANK(lp, 2);
+ spin_unlock_irq(&lp->lock);
+ return 0;
+}
+
+static int smc_ethtool_geteeprom_len(struct net_device *dev)
+{
+ return 0x23 * 2;
+}
+
+static int smc_ethtool_geteeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ int i;
+ int imax;
+
+ DBG(1, "Reading %d bytes at %d(0x%x)\n",
+ eeprom->len, eeprom->offset, eeprom->offset);
+ imax = smc_ethtool_geteeprom_len(dev);
+ for (i = 0; i < eeprom->len; i += 2) {
+ int ret;
+ u16 wbuf;
+ int offset = i + eeprom->offset;
+ if (offset > imax)
+ break;
+ ret = smc_read_eeprom_word(dev, offset >> 1, &wbuf);
+ if (ret != 0)
+ return ret;
+ DBG(2, "Read 0x%x from 0x%x\n", wbuf, offset >> 1);
+ data[i] = (wbuf >> 8) & 0xff;
+ data[i+1] = wbuf & 0xff;
+ }
+ return 0;
+}
+
+static int smc_ethtool_seteeprom(struct net_device *dev,
+ struct ethtool_eeprom *eeprom, u8 *data)
+{
+ int i;
+ int imax;
+
+ DBG(1, "Writing %d bytes to %d(0x%x)\n",
+ eeprom->len, eeprom->offset, eeprom->offset);
+ imax = smc_ethtool_geteeprom_len(dev);
+ for (i = 0; i < eeprom->len; i += 2) {
+ int ret;
+ u16 wbuf;
+ int offset = i + eeprom->offset;
+ if (offset > imax)
+ break;
+ wbuf = (data[i] << 8) | data[i + 1];
+ DBG(2, "Writing 0x%x to 0x%x\n", wbuf, offset >> 1);
+ ret = smc_write_eeprom_word(dev, offset >> 1, wbuf);
+ if (ret != 0)
+ return ret;
+ }
+ return 0;
+}
+
+
static const struct ethtool_ops smc_ethtool_ops = {
.get_settings = smc_ethtool_getsettings,
.set_settings = smc_ethtool_setsettings,
@@ -1652,8 +1763,9 @@
.set_msglevel = smc_ethtool_setmsglevel,
.nway_reset = smc_ethtool_nwayreset,
.get_link = ethtool_op_get_link,
-// .get_eeprom = smc_ethtool_geteeprom,
-// .set_eeprom = smc_ethtool_seteeprom,
+ .get_eeprom_len = smc_ethtool_geteeprom_len,
+ .get_eeprom = smc_ethtool_geteeprom,
+ .set_eeprom = smc_ethtool_seteeprom,
};
/*