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[PATCH] e1000: fix TX timout hang regression for 82542rev3 

Commit 581d708eb4 (oct. 5 2005) introduced
partial Multiqueue support for e1000 which broke macro smartness in setting
up head/tail registers for 82542 rev3 chipsets, making these adapters
completely non-working since 2.6.15.

This commit sets the proper head and tail registers for read and write
descriptor rings. Ths fix was tested on an 82542 rev3 NIC and newer NICs.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Auke Kok 2006-09-11 14:00:21 -07:00 committed by Jeff Garzik
parent 1802ca7452
commit 6a9516989f
1 changed files with 4 additions and 4 deletions
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8
drivers/net/e1000/e1000_main.c
View File

@ -1433,8 +1433,8 @@ e1000_configure_tx(struct e1000_adapter *adapter)
E1000_WRITE_REG(hw, TDBAL, (tdba & 0x00000000ffffffffULL));
E1000_WRITE_REG(hw, TDT, 0);
E1000_WRITE_REG(hw, TDH, 0);
adapter->tx_ring[0].tdh = E1000_TDH;
adapter->tx_ring[0].tdt = E1000_TDT;
adapter->tx_ring[0].tdh = ((hw->mac_type >= e1000_82543) ? E1000_TDH : E1000_82542_TDH);
adapter->tx_ring[0].tdt = ((hw->mac_type >= e1000_82543) ? E1000_TDT : E1000_82542_TDT);
break;
}
@ -1840,8 +1840,8 @@ e1000_configure_rx(struct e1000_adapter *adapter)
E1000_WRITE_REG(hw, RDBAL, (rdba & 0x00000000ffffffffULL));
E1000_WRITE_REG(hw, RDT, 0);
E1000_WRITE_REG(hw, RDH, 0);
adapter->rx_ring[0].rdh = E1000_RDH;
adapter->rx_ring[0].rdt = E1000_RDT;
adapter->rx_ring[0].rdh = ((hw->mac_type >= e1000_82543) ? E1000_RDH : E1000_82542_RDH);
adapter->rx_ring[0].rdt = ((hw->mac_type >= e1000_82543) ? E1000_RDT : E1000_82542_RDT);
break;
}