Commit 668c0cdb authored by Ganesh Venkatesan's avatar Ganesh Venkatesan Committed by Jeff Garzik

[PATCH] e1000 3/7: Determine link status correctly while using

parent b3a0f501
......@@ -470,7 +470,6 @@ e1000_init_hw(struct e1000_hw *hw)
uint16_t pcix_stat_hi_word;
uint16_t cmd_mmrbc;
uint16_t stat_mmrbc;
DEBUGFUNC("e1000_init_hw");
/* Initialize Identification LED */
......@@ -1967,7 +1966,7 @@ e1000_config_fc_after_link_up(struct e1000_hw *hw)
int32_t
e1000_check_for_link(struct e1000_hw *hw)
{
uint32_t rxcw;
uint32_t rxcw = 0;
uint32_t ctrl;
uint32_t status;
uint32_t rctl;
......@@ -1977,17 +1976,24 @@ e1000_check_for_link(struct e1000_hw *hw)
DEBUGFUNC("e1000_check_for_link");
ctrl = E1000_READ_REG(hw, CTRL);
status = E1000_READ_REG(hw, STATUS);
/* On adapters with a MAC newer than 82544, SW Defineable pin 1 will be
* set when the optics detect a signal. On older adapters, it will be
* cleared when there is a signal. This applies to fiber media only.
*/
if(hw->media_type == e1000_media_type_fiber)
signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
ctrl = E1000_READ_REG(hw, CTRL);
status = E1000_READ_REG(hw, STATUS);
if((hw->media_type == e1000_media_type_fiber) ||
(hw->media_type == e1000_media_type_internal_serdes)) {
rxcw = E1000_READ_REG(hw, RXCW);
if(hw->media_type == e1000_media_type_fiber) {
signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
if(status & E1000_STATUS_LU)
hw->get_link_status = FALSE;
}
}
/* If we have a copper PHY then we only want to go out to the PHY
* registers to see if Auto-Neg has completed and/or if our link
* status has changed. The get_link_status flag will be set if we
......@@ -2131,8 +2137,7 @@ e1000_check_for_link(struct e1000_hw *hw)
*/
else if(((hw->media_type == e1000_media_type_fiber) ||
(hw->media_type == e1000_media_type_internal_serdes)) &&
(ctrl & E1000_CTRL_SLU) &&
(rxcw & E1000_RXCW_C)) {
(ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) {
DEBUGOUT("RXing /C/, enable AutoNeg and stop forcing link.\r\n");
E1000_WRITE_REG(hw, TXCW, hw->txcw);
E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU));
......
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