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e1000: add smart power down code

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Smart Power Down is a power saving feature in newer e1000 hardware. We
disable it because it causes time to link to be long, but make it a
user choice.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
This commit is contained in:
Auke Kok
2006-06-27 09:06:45 -07:00
committed by Auke Kok
parent 0cbabbb072
commit 9a53a20298
3 changed files with 41 additions and 0 deletions
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15
drivers/net/e1000/e1000_main.c
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@@ -607,6 +607,21 @@ e1000_reset(struct e1000_adapter *adapter)
e1000_reset_adaptive(&adapter->hw);
e1000_phy_get_info(&adapter->hw, &adapter->phy_info);
if (!adapter->smart_power_down &&
(adapter->hw.mac_type == e1000_82571 ||
adapter->hw.mac_type == e1000_82572)) {
uint16_t phy_data = 0;
/* speed up time to link by disabling smart power down, ignore
* the return value of this function because there is nothing
* different we would do if it failed */
e1000_read_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
&phy_data);
phy_data &= ~IGP02E1000_PM_SPD;
e1000_write_phy_reg(&adapter->hw, IGP02E1000_PHY_POWER_MGMT,
phy_data);
}
if (adapter->en_mng_pt) {
manc = E1000_READ_REG(&adapter->hw, MANC);
manc |= (E1000_MANC_ARP_EN | E1000_MANC_EN_MNG2HOST);