static int
ixgb_set_eeprom(struct net_device *netdev,
struct ethtool_eeprom *eeprom, u8 *bytes)
{
struct ixgb_adapter *adapter = netdev_priv(netdev);
struct ixgb_hw *hw = &adapter->hw;
u16 *eeprom_buff;
void *ptr;
int max_len, first_word, last_word;
u16 i;
if (eeprom->len == 0)
return -EINVAL;
if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
return -EFAULT;
max_len = ixgb_get_eeprom_len(netdev);
if (eeprom->offset > eeprom->offset + eeprom->len)
return -EINVAL;
if ((eeprom->offset + eeprom->len) > max_len)
eeprom->len = (max_len - eeprom->offset);
first_word = eeprom->offset >> 1;
last_word = (eeprom->offset + eeprom->len - 1) >> 1;
eeprom_buff = kmalloc(max_len, GFP_KERNEL);
if (!eeprom_buff)
return -ENOMEM;
ptr = (void *)eeprom_buff;
if (eeprom->offset & 1) {
/* need read/modify/write of first changed EEPROM word */
/* only the second byte of the word is being modified */
eeprom_buff[0] = ixgb_read_eeprom(hw, first_word);
ptr++;
}
if ((eeprom->offset + eeprom->len) & 1) {
/* need read/modify/write of last changed EEPROM word */
/* only the first byte of the word is being modified */
eeprom_buff[last_word - first_word]
= ixgb_read_eeprom(hw, last_word);
}
memcpy(ptr, bytes, eeprom->len);
for (i = 0; i <= (last_word - first_word); i++)
ixgb_write_eeprom(hw, first_word + i, eeprom_buff[i]);
/* Update the checksum over the first part of the EEPROM if needed */
if (first_word <= EEPROM_CHECKSUM_REG)
ixgb_update_eeprom_checksum(hw);
kfree(eeprom_buff);
return 0;
}
static int
ixgb_ethtool_seeprom(struct net_device *dev,
struct ethtool_eeprom *eeprom, u8 *data)
{
struct ixgb_adapter *adapter = dev->priv;
struct ixgb_hw *hw = &adapter->hw;
/* We are under rtnl, so static is OK */
static uint16_t eeprom_buff[IXGB_EEPROM_SIZE];
int i, first_word, last_word;
char *ptr;
if (eeprom->magic != (hw->vendor_id | (hw->device_id << 16)))
return -EFAULT;
first_word = eeprom->offset >> 1;
last_word = (eeprom->offset + eeprom->len - 1) >> 1;
ptr = (char *)eeprom_buff;
if (eeprom->offset & 1) {
/* need read/modify/write of first changed EEPROM word */
/* only the second byte of the word is being modified */
eeprom_buff[0] = ixgb_read_eeprom(hw, first_word);
ptr++;
}
if ((eeprom->offset + eeprom->len) & 1) {
/* need read/modify/write of last changed EEPROM word */
/* only the first byte of the word is being modified */
eeprom_buff[last_word - first_word]
= ixgb_read_eeprom(hw, last_word);
}
memcpy(ptr, data, eeprom->len);
for (i = 0; i <= (last_word - first_word); i++)
ixgb_write_eeprom(hw, first_word + i, eeprom_buff[i]);
/* Update the checksum over the first part of the EEPROM if needed */
if (first_word <= EEPROM_CHECKSUM_REG)
ixgb_update_eeprom_checksum(hw);
return 0;
}
