diff options
| author | Jeff Garzik <jeff@garzik.org> | 2006-12-15 16:06:17 (GMT) |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-26 20:51:30 (GMT) |
| commit | bb8e3311ef9de8e72f45f910e4a977c313c7009c (patch) | |
| tree | bcf4b5b900face868506bc50a5e7a23338198efb /drivers/net | |
| parent | 72f3ab7462f4e153d1e8ac78e379716ad71d6923 (diff) | |
| download | linux-bb8e3311ef9de8e72f45f910e4a977c313c7009c.tar.xz | |
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>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/e1000/e1000_hw.c | 6 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 7 |
3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c index 1ea556e..ea7b371 100644 --- a/drivers/net/e1000/e1000_hw.c +++ b/drivers/net/e1000/e1000_hw.c @@ -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; } diff --git a/drivers/net/e1000/e1000_hw.h b/drivers/net/e1000/e1000_hw.h index 18a4ae4..f4d01e1 100644 --- a/drivers/net/e1000/e1000_hw.h +++ b/drivers/net/e1000/e1000_hw.h @@ -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; }; diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 9c24949..343eb68 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -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)) { |