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e1000: add smart power down code 

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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1
drivers/net/e1000/e1000.h
View File

@ -338,6 +338,7 @@ struct e1000_adapter {
#ifdef NETIF_F_TSO
boolean_t tso_force;
#endif
boolean_t smart_power_down; /* phy smart power down */
unsigned long flags;
};

15
drivers/net/e1000/e1000_main.c
View File

@ -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);

25
drivers/net/e1000/e1000_param.c
View File

@ -183,6 +183,15 @@ E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
/* Enable Smart Power Down of the PHY
*
* Valid Range: 0, 1
*
* Default Value: 0 (disabled)
*/
E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
#define AUTONEG_ADV_DEFAULT 0x2F
#define AUTONEG_ADV_MASK 0x2F
#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
@ -494,6 +503,22 @@ e1000_check_options(struct e1000_adapter *adapter)
adapter->itr = opt.def;
}
}
{ /* Smart Power Down */
struct e1000_option opt = {
.type = enable_option,
.name = "PHY Smart Power Down",
.err = "defaulting to Disabled",
.def = OPTION_DISABLED
};
if (num_SmartPowerDownEnable > bd) {
int spd = SmartPowerDownEnable[bd];
e1000_validate_option(&spd, &opt, adapter);
adapter->smart_power_down = spd;
} else {
adapter->smart_power_down = opt.def;
}
}
switch (adapter->hw.media_type) {
case e1000_media_type_fiber: