From 8e2773ae3558d69ebba48df2c52111d975db6afa Mon Sep 17 00:00:00 2001 From: Shannon Nelson Date: Thu, 28 Nov 2013 06:39:22 +0000 Subject: i40e: add wake-on-lan support Wake on LAN is disabled by default and will remain that way for most platforms, but there is an NVM setting that allows vendors to enable it for a port if they think they've provided the right power environment for the device. This patch adds code to check the NVM setting and enable Magic Packet use if WoL is enabled for the port. Since only Magic Packet is supported, there's not a lot of HW configuration needed. Change-Id: I44e904a7b15695e34683009f487064cd86ea59b0 Signed-off-by: Shannon Nelson Signed-off-by: Jesse Brandeburg Tested-by: Kavindya Deegala Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 42 ++++++++++++++++++++++++-- 1 file changed, 40 insertions(+), 2 deletions(-) (limited to 'drivers/net/ethernet/intel/i40e/i40e_ethtool.c') diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index d6681f6bf291..255a138a212a 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -844,8 +844,45 @@ static void i40e_diag_test(struct net_device *netdev, static void i40e_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) { - wol->supported = 0; - wol->wolopts = 0; + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + u16 wol_nvm_bits; + + /* NVM bit on means WoL disabled for the port */ + i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); + if ((1 << hw->port) & wol_nvm_bits) { + wol->supported = 0; + wol->wolopts = 0; + } else { + wol->supported = WAKE_MAGIC; + wol->wolopts = (pf->wol_en ? WAKE_MAGIC : 0); + } +} + +static int i40e_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) +{ + struct i40e_netdev_priv *np = netdev_priv(netdev); + struct i40e_pf *pf = np->vsi->back; + struct i40e_hw *hw = &pf->hw; + u16 wol_nvm_bits; + + /* NVM bit on means WoL disabled for the port */ + i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits); + if (((1 << hw->port) & wol_nvm_bits)) + return -EOPNOTSUPP; + + /* only magic packet is supported */ + if (wol->wolopts && (wol->wolopts != WAKE_MAGIC)) + return -EOPNOTSUPP; + + /* is this a new value? */ + if (pf->wol_en != !!wol->wolopts) { + pf->wol_en = !!wol->wolopts; + device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en); + } + + return 0; } static int i40e_nway_reset(struct net_device *netdev) @@ -1568,6 +1605,7 @@ static const struct ethtool_ops i40e_ethtool_ops = { .nway_reset = i40e_nway_reset, .get_link = ethtool_op_get_link, .get_wol = i40e_get_wol, + .set_wol = i40e_set_wol, .get_eeprom_len = i40e_get_eeprom_len, .get_eeprom = i40e_get_eeprom, .get_ringparam = i40e_get_ringparam, -- cgit v1.2.3