src/sys/dev/alc, branch release/8.1.0

MFC r206876:

2010-04-26T18:02:12Z

With r206844, CSUM_TCP is also set for CSUM_TSO case. Modify drivers to take into account for the change. Basically CSUM_TSO should be checked before checking CSUM_TCP.

MFC r204228,204230:

2010-03-23T19:41:43Z

r204228: Add TSO support on VLANs. Also make sure to update TSO capability whenever jumbo frame is configured. While I'm here remove unnecessary check of VLAN hardware checksum offloading. vlan(4) already takes care of this. r204230: Remove Tx mbuf parsing code for VLAN in TSO path. Controller does not support TSO over VLAN if VLAN hardware tagging is disabled so there is no need to check VLAN here.

MFC 197627.

2009-11-29T19:29:11Z

Fix multicast handling. All Atheros controllers use big-endian form in computing multicast hash. PR: kern/139137

MFC 197600.

2009-11-29T19:25:15Z

For AR8132 fast ethernet controller, do not report 1000baseT capability to mii(4). Even though AR8132 uses the same model/ revision number of F1 gigabit PHY, the PHY has no ability to establish 1000baseT link. I have no idea why Atheros use the same device/model id for this PHY. With this change atphy(4) does not report 1000baseT media capability and manual 1000baseT configuration is also disabled which is more desirable behavior for 10/100Mbps PHY.

MFC r196517:

2009-08-28T18:01:37Z

Don't try to power down PHY when alc(4) failed to map the device. This fixes system crash when mapping alc(4) device failed in device attach. Reported by: Jim < stapleton.41 <> gmail DOT com > Approved by: re (kib)

Free allocated Rx ring dma memory/tags.

2009-07-31T09:57:42Z

Reviewed by: yongari@ Approved by: re (kib)

Use if_maddr_rlock()/if_maddr_runlock() rather than IF_ADDR_LOCK()/

2009-06-26T11:45:06Z

IF_ADDR_UNLOCK() across network device drivers when accessing the per-interface multicast address list, if_multiaddrs. This will allow us to change the locking strategy without affecting our driver programming interface or binary interface. For two wireless drivers, remove unnecessary locking, since they don't actually access the multicast address list. Approved by: re (kib) MFC after: 6 weeks

Add alc(4), a driver for Atheros AR8131/AR8132 PCIe ethernet

2009-06-10T02:07:58Z

controller. These controllers are also known as L1C(AR8131) and L2C(AR8132) respectively. These controllers resembles the first generation controller L1 but usage of different descriptor format and new register mappings over L1 register space requires a new driver. There are a couple of registers I still don't understand but the driver seems to have no critical issues for performance and stability. Currently alc(4) supports the following hardware features. o MSI o TCP Segmentation offload o Hardware VLAN tag insertion/stripping o Tx/Rx interrupt moderation o Hardware statistics counters(dev.alc.%d.stats) o Jumbo frame o WOL AR8131/AR8132 also supports Tx checksum offloading but I disabled it due to stability issues. I'm not sure this comes from broken sample boards or hardware bugs. If you know your controller works without problems you can still enable it. The controller has a silicon bug for Rx checksum offloading, so the feature was not implemented. I'd like to say big thanks to Atheros. Atheros kindly sent sample boards to me and answered several questions I had. HW donated by: Atheros Communications, Inc.