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path: root/drivers/net/e1000e/lib.c
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Diffstat (limited to 'drivers/net/e1000e/lib.c')
-rw-r--r--drivers/net/e1000e/lib.c80
1 files changed, 51 insertions, 29 deletions
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c
index 089578f..6674110 100644
--- a/drivers/net/e1000e/lib.c
+++ b/drivers/net/e1000e/lib.c
@@ -575,20 +575,42 @@ s32 e1000e_check_for_serdes_link(struct e1000_hw *hw)
*/
/* SYNCH bit and IV bit are sticky. */
udelay(10);
- if (E1000_RXCW_SYNCH & er32(RXCW)) {
+ rxcw = er32(RXCW);
+ if (rxcw & E1000_RXCW_SYNCH) {
if (!(rxcw & E1000_RXCW_IV)) {
- mac->serdes_has_link = 1;
- hw_dbg(hw, "SERDES: Link is up.\n");
+ mac->serdes_has_link = true;
+ hw_dbg(hw, "SERDES: Link up - forced.\n");
}
} else {
- mac->serdes_has_link = 0;
- hw_dbg(hw, "SERDES: Link is down.\n");
+ mac->serdes_has_link = false;
+ hw_dbg(hw, "SERDES: Link down - force failed.\n");
}
}
if (E1000_TXCW_ANE & er32(TXCW)) {
status = er32(STATUS);
- mac->serdes_has_link = (status & E1000_STATUS_LU);
+ if (status & E1000_STATUS_LU) {
+ /* SYNCH bit and IV bit are sticky, so reread rxcw. */
+ udelay(10);
+ rxcw = er32(RXCW);
+ if (rxcw & E1000_RXCW_SYNCH) {
+ if (!(rxcw & E1000_RXCW_IV)) {
+ mac->serdes_has_link = true;
+ hw_dbg(hw, "SERDES: Link up - autoneg "
+ "completed sucessfully.\n");
+ } else {
+ mac->serdes_has_link = false;
+ hw_dbg(hw, "SERDES: Link down - invalid"
+ "codewords detected in autoneg.\n");
+ }
+ } else {
+ mac->serdes_has_link = false;
+ hw_dbg(hw, "SERDES: Link down - no sync.\n");
+ }
+ } else {
+ mac->serdes_has_link = false;
+ hw_dbg(hw, "SERDES: Link down - autoneg failed\n");
+ }
}
return 0;
@@ -623,12 +645,12 @@ static s32 e1000_set_default_fc_generic(struct e1000_hw *hw)
}
if ((nvm_data & NVM_WORD0F_PAUSE_MASK) == 0)
- hw->fc.type = e1000_fc_none;
+ hw->fc.requested_mode = e1000_fc_none;
else if ((nvm_data & NVM_WORD0F_PAUSE_MASK) ==
NVM_WORD0F_ASM_DIR)
- hw->fc.type = e1000_fc_tx_pause;
+ hw->fc.requested_mode = e1000_fc_tx_pause;
else
- hw->fc.type = e1000_fc_full;
+ hw->fc.requested_mode = e1000_fc_full;
return 0;
}
@@ -656,23 +678,23 @@ s32 e1000e_setup_link(struct e1000_hw *hw)
return 0;
/*
- * If flow control is set to default, set flow control based on
- * the EEPROM flow control settings.
+ * If requested flow control is set to default, set flow control
+ * based on the EEPROM flow control settings.
*/
- if (hw->fc.type == e1000_fc_default) {
+ if (hw->fc.requested_mode == e1000_fc_default) {
ret_val = e1000_set_default_fc_generic(hw);
if (ret_val)
return ret_val;
}
/*
- * We want to save off the original Flow Control configuration just
- * in case we get disconnected and then reconnected into a different
- * hub or switch with different Flow Control capabilities.
+ * Save off the requested flow control mode for use later. Depending
+ * on the link partner's capabilities, we may or may not use this mode.
*/
- hw->fc.original_type = hw->fc.type;
+ hw->fc.current_mode = hw->fc.requested_mode;
- hw_dbg(hw, "After fix-ups FlowControl is now = %x\n", hw->fc.type);
+ hw_dbg(hw, "After fix-ups FlowControl is now = %x\n",
+ hw->fc.current_mode);
/* Call the necessary media_type subroutine to configure the link. */
ret_val = mac->ops.setup_physical_interface(hw);
@@ -724,7 +746,7 @@ static s32 e1000_commit_fc_settings_generic(struct e1000_hw *hw)
* do not support receiving pause frames).
* 3: Both Rx and Tx flow control (symmetric) are enabled.
*/
- switch (hw->fc.type) {
+ switch (hw->fc.current_mode) {
case e1000_fc_none:
/* Flow control completely disabled by a software over-ride. */
txcw = (E1000_TXCW_ANE | E1000_TXCW_FD);
@@ -906,7 +928,7 @@ s32 e1000e_set_fc_watermarks(struct e1000_hw *hw)
* ability to transmit pause frames is not enabled, then these
* registers will be set to 0.
*/
- if (hw->fc.type & e1000_fc_tx_pause) {
+ if (hw->fc.current_mode & e1000_fc_tx_pause) {
/*
* We need to set up the Receive Threshold high and low water
* marks as well as (optionally) enabling the transmission of
@@ -945,7 +967,7 @@ s32 e1000e_force_mac_fc(struct e1000_hw *hw)
* receive flow control.
*
* The "Case" statement below enables/disable flow control
- * according to the "hw->fc.type" parameter.
+ * according to the "hw->fc.current_mode" parameter.
*
* The possible values of the "fc" parameter are:
* 0: Flow control is completely disabled
@@ -956,9 +978,9 @@ s32 e1000e_force_mac_fc(struct e1000_hw *hw)
* 3: Both Rx and Tx flow control (symmetric) is enabled.
* other: No other values should be possible at this point.
*/
- hw_dbg(hw, "hw->fc.type = %u\n", hw->fc.type);
+ hw_dbg(hw, "hw->fc.current_mode = %u\n", hw->fc.current_mode);
- switch (hw->fc.type) {
+ switch (hw->fc.current_mode) {
case e1000_fc_none:
ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE));
break;
@@ -1102,11 +1124,11 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
* ONLY. Hence, we must now check to see if we need to
* turn OFF the TRANSMISSION of PAUSE frames.
*/
- if (hw->fc.original_type == e1000_fc_full) {
- hw->fc.type = e1000_fc_full;
+ if (hw->fc.requested_mode == e1000_fc_full) {
+ hw->fc.current_mode = e1000_fc_full;
hw_dbg(hw, "Flow Control = FULL.\r\n");
} else {
- hw->fc.type = e1000_fc_rx_pause;
+ hw->fc.current_mode = e1000_fc_rx_pause;
hw_dbg(hw, "Flow Control = "
"RX PAUSE frames only.\r\n");
}
@@ -1124,7 +1146,7 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
(mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
(mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
- hw->fc.type = e1000_fc_tx_pause;
+ hw->fc.current_mode = e1000_fc_tx_pause;
hw_dbg(hw, "Flow Control = Tx PAUSE frames only.\r\n");
}
/*
@@ -1140,14 +1162,14 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
(mii_nway_adv_reg & NWAY_AR_ASM_DIR) &&
!(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) &&
(mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) {
- hw->fc.type = e1000_fc_rx_pause;
+ hw->fc.current_mode = e1000_fc_rx_pause;
hw_dbg(hw, "Flow Control = Rx PAUSE frames only.\r\n");
} else {
/*
* Per the IEEE spec, at this point flow control
* should be disabled.
*/
- hw->fc.type = e1000_fc_none;
+ hw->fc.current_mode = e1000_fc_none;
hw_dbg(hw, "Flow Control = NONE.\r\n");
}
@@ -1163,7 +1185,7 @@ s32 e1000e_config_fc_after_link_up(struct e1000_hw *hw)
}
if (duplex == HALF_DUPLEX)
- hw->fc.type = e1000_fc_none;
+ hw->fc.current_mode = e1000_fc_none;
/*
* Now we call a subroutine to actually force the MAC
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