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e1000: workaround for the ESB2 NIC RX unit issue 

In rare occasions, ESB2 systems would end up started without the RX
unit being turned on. Add a check that runs post-init to work around
this issue.

Originally from Jesse Brandeburg <jesse.brandeburg@intel.com>,
rewritten to use feature flags by me.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jeff Garzik 2006-12-15 11:06:17 -05:00
parent 72f3ab7462
commit bb8e3311ef
3 changed files with 14 additions and 0 deletions
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6
drivers/net/e1000/e1000_hw.c
View File

@ -452,6 +452,12 @@ e1000_set_mac_type(struct e1000_hw *hw)
if (hw->mac_type >= e1000_82571)
hw->has_manc2h = TRUE;
/* In rare occasions, ESB2 systems would end up started without
* the RX unit being turned on.
*/
if (hw->mac_type == e1000_80003es2lan)
hw->rx_needs_kicking = TRUE;
return E1000_SUCCESS;
}

1
drivers/net/e1000/e1000_hw.h
View File

@ -1463,6 +1463,7 @@ struct e1000_hw {
boolean_t kmrn_lock_loss_workaround_disabled;
boolean_t bad_tx_carr_stats_fd;
boolean_t has_manc2h;
boolean_t rx_needs_kicking;
};

7
drivers/net/e1000/e1000_main.c
View File

@ -2579,6 +2579,13 @@ e1000_watchdog(unsigned long data)
netif_wake_queue(netdev);
mod_timer(&adapter->phy_info_timer, jiffies + 2 * HZ);
adapter->smartspeed = 0;
} else {
/* make sure the receive unit is started */
if (adapter->hw.rx_needs_kicking) {
struct e1000_hw *hw = &adapter->hw;
uint32_t rctl = E1000_READ_REG(hw, RCTL);
E1000_WRITE_REG(hw, RCTL, rctl | E1000_RCTL_EN);
}
}
} else {
if (netif_carrier_ok(netdev)) {