I would not include this patch until further testing is performed. NVIDIA MCP chips use 3rd party PHY vendors. By powering down the phy, it could have adverse affects on certain phys.
Ayaz -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Thursday, December 13, 2007 4:03 PM To: [EMAIL PROTECTED] Cc: netdev@vger.kernel.org; [EMAIL PROTECTED]; [EMAIL PROTECTED]; Ayaz Abdulla Subject: [patch 02/10] forcedeth: power down phy when interface is down From: "Ed Swierk" <[EMAIL PROTECTED]> Bring the physical link down when the interface is down by placing the PHY in power-down state, unless WOL is enabled. This mirrors the behavior of other drivers including e1000 and tg3. Signed-off-by: Ed Swierk <[EMAIL PROTECTED]> Cc: Jeff Garzik <[EMAIL PROTECTED]> Cc: Ayaz Abdulla <[EMAIL PROTECTED]> Signed-off-by: Andrew Morton <[EMAIL PROTECTED]> --- drivers/net/forcedeth.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff -puN drivers/net/forcedeth.c~forcedeth-power-down-phy-when-interface-is-down drivers/net/forcedeth.c --- a/drivers/net/forcedeth.c~forcedeth-power-down-phy-when-interface-is-dow n +++ a/drivers/net/forcedeth.c @@ -1312,9 +1312,9 @@ static int phy_init(struct net_device *d /* some phys clear out pause advertisment on reset, set it back */ mii_rw(dev, np->phyaddr, MII_ADVERTISE, reg); - /* restart auto negotiation */ + /* restart auto negotiation, power down phy */ mii_control = mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ); - mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE); + mii_control |= (BMCR_ANRESTART | BMCR_ANENABLE | BMCR_PDOWN); if (mii_rw(dev, np->phyaddr, MII_BMCR, mii_control)) { return PHY_ERROR; } @@ -4798,6 +4798,10 @@ static int nv_open(struct net_device *de dprintk(KERN_DEBUG "nv_open: begin\n"); + /* power up phy */ + mii_rw(dev, np->phyaddr, MII_BMCR, + mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ) & ~BMCR_PDOWN); + /* erase previous misconfiguration */ if (np->driver_data & DEV_HAS_POWER_CNTRL) nv_mac_reset(dev); @@ -4980,6 +4984,10 @@ static int nv_close(struct net_device *d if (np->wolenabled) { writel(NVREG_PFF_ALWAYS|NVREG_PFF_MYADDR, base + NvRegPacketFilterFlags); nv_start_rx(dev); + } else { + /* power down phy */ + mii_rw(dev, np->phyaddr, MII_BMCR, + mii_rw(dev, np->phyaddr, MII_BMCR, MII_READ)|BMCR_PDOWN); } /* FIXME: power down nic */ _ ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ----------------------------------------------------------------------------------- -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
