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Commit 9a53a202 authored by Auke Kok's avatar Auke Kok Committed by Auke Kok
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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: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarAuke Kok <auke-jan.h.kok@intel.com>
parent 0cbabbb0

drivers/net/e1000/e1000.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

};

drivers/net/e1000/e1000_main.c

+15 −0
Original line number Diff line number Diff line
@@ -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);

drivers/net/e1000/e1000_param.c

+25 −0
Original line number Diff line number Diff line
@@ -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: