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e1000e: add ethtool .get_eee/.set_eee

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Add the ability to query and set Energy Efficient Ethernet parameters via
ethtool for applicable devices.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Bruce Allan 2012-12-05 08:40:59 +00:00 • committed by Jeff Kirsher
parent 887c95cc1d
commit 203e41514a
5 changed files with 167 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

134
drivers/net/ethernet/intel/e1000e/ethtool.c
View file

@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/vmalloc.h>
#include <linux/mdio.h>
#include "e1000.h"
@ -2050,6 +2051,137 @@ static int e1000_get_rxnfc(struct net_device *netdev,
}
}
static int e1000e_get_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
u16 cap_addr, adv_addr, lpa_addr, pcs_stat_addr, phy_data, lpi_ctrl;
u32 status, ret_val;
if (!(adapter->flags & FLAG_IS_ICH) ||
!(adapter->flags2 & FLAG2_HAS_EEE))
return -EOPNOTSUPP;
switch (hw->phy.type) {
case e1000_phy_82579:
cap_addr = I82579_EEE_CAPABILITY;
adv_addr = I82579_EEE_ADVERTISEMENT;
lpa_addr = I82579_EEE_LP_ABILITY;
pcs_stat_addr = I82579_EEE_PCS_STATUS;
break;
case e1000_phy_i217:
cap_addr = I217_EEE_CAPABILITY;
adv_addr = I217_EEE_ADVERTISEMENT;
lpa_addr = I217_EEE_LP_ABILITY;
pcs_stat_addr = I217_EEE_PCS_STATUS;
break;
default:
return -EOPNOTSUPP;
}
ret_val = hw->phy.ops.acquire(hw);
if (ret_val)
return -EBUSY;
/* EEE Capability */
ret_val = e1000_read_emi_reg_locked(hw, cap_addr, &phy_data);
if (ret_val)
goto release;
edata->supported = mmd_eee_cap_to_ethtool_sup_t(phy_data);
/* EEE Advertised */
ret_val = e1000_read_emi_reg_locked(hw, adv_addr, &phy_data);
if (ret_val)
goto release;
edata->advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);
/* EEE Link Partner Advertised */
ret_val = e1000_read_emi_reg_locked(hw, lpa_addr, &phy_data);
if (ret_val)
goto release;
edata->lp_advertised = mmd_eee_adv_to_ethtool_adv_t(phy_data);
/* EEE PCS Status */
ret_val = e1000_read_emi_reg_locked(hw, pcs_stat_addr, &phy_data);
if (hw->phy.type == e1000_phy_82579)
phy_data <<= 8;
release:
hw->phy.ops.release(hw);
if (ret_val)
return -ENODATA;
e1e_rphy(hw, I82579_LPI_CTRL, &lpi_ctrl);
status = er32(STATUS);
/* Result of the EEE auto negotiation - there is no register that
* has the status of the EEE negotiation so do a best-guess based
* on whether both Tx and Rx LPI indications have been received or
* base it on the link speed, the EEE advertised speeds on both ends
* and the speeds on which EEE is enabled locally.
*/
if (((phy_data & E1000_EEE_TX_LPI_RCVD) &&
(phy_data & E1000_EEE_RX_LPI_RCVD)) ||
((status & E1000_STATUS_SPEED_100) &&
(edata->advertised & ADVERTISED_100baseT_Full) &&
(edata->lp_advertised & ADVERTISED_100baseT_Full) &&
(lpi_ctrl & I82579_LPI_CTRL_100_ENABLE)) ||
((status & E1000_STATUS_SPEED_1000) &&
(edata->advertised & ADVERTISED_1000baseT_Full) &&
(edata->lp_advertised & ADVERTISED_1000baseT_Full) &&
(lpi_ctrl & I82579_LPI_CTRL_1000_ENABLE)))
edata->eee_active = true;
edata->eee_enabled = !hw->dev_spec.ich8lan.eee_disable;
edata->tx_lpi_enabled = true;
edata->tx_lpi_timer = er32(LPIC) >> E1000_LPIC_LPIET_SHIFT;
return 0;
}
static int e1000e_set_eee(struct net_device *netdev, struct ethtool_eee *edata)
{
struct e1000_adapter *adapter = netdev_priv(netdev);
struct e1000_hw *hw = &adapter->hw;
struct ethtool_eee eee_curr;
s32 ret_val;
if (!(adapter->flags & FLAG_IS_ICH) ||
!(adapter->flags2 & FLAG2_HAS_EEE))
return -EOPNOTSUPP;
ret_val = e1000e_get_eee(netdev, &eee_curr);
if (ret_val)
return ret_val;
if (eee_curr.advertised != edata->advertised) {
e_err("Setting EEE advertisement is not supported\n");
return -EINVAL;
}
if (eee_curr.tx_lpi_enabled != edata->tx_lpi_enabled) {
e_err("Setting EEE tx-lpi is not supported\n");
return -EINVAL;
}
if (eee_curr.tx_lpi_timer != edata->tx_lpi_timer) {
e_err("Setting EEE Tx LPI timer is not supported\n");
return -EINVAL;
}
if (hw->dev_spec.ich8lan.eee_disable != !edata->eee_enabled) {
hw->dev_spec.ich8lan.eee_disable = !edata->eee_enabled;
/* reset the link */
if (netif_running(netdev))
e1000e_reinit_locked(adapter);
else
e1000e_reset(adapter);
}
return 0;
}
static const struct ethtool_ops e1000_ethtool_ops = {
.get_settings = e1000_get_settings,
.set_settings = e1000_set_settings,
@ -2078,6 +2210,8 @@ static const struct ethtool_ops e1000_ethtool_ops = {
.set_coalesce = e1000_set_coalesce,
.get_rxnfc = e1000_get_rxnfc,
.get_ts_info = ethtool_op_get_ts_info,
.get_eee = e1000e_get_eee,
.set_eee = e1000e_set_eee,
};
void e1000e_set_ethtool_ops(struct net_device *netdev)