/* flow control */
#define IXGBE_DEFAULT_FCRTL 0x10000
-#define IXGBE_MIN_FCRTL 0
+#define IXGBE_MIN_FCRTL 0x40
#define IXGBE_MAX_FCRTL 0x7FF80
#define IXGBE_DEFAULT_FCRTH 0x20000
-#define IXGBE_MIN_FCRTH 0
+#define IXGBE_MIN_FCRTH 0x600
#define IXGBE_MAX_FCRTH 0x7FFF0
-#define IXGBE_DEFAULT_FCPAUSE 0x6800 /* may be too long */
+#define IXGBE_DEFAULT_FCPAUSE 0xFFFF
#define IXGBE_MIN_FCPAUSE 0
#define IXGBE_MAX_FCPAUSE 0xFFFF
rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);
+ /*
+ * 10 gig parts do not have a word in the EEPROM to determine the
+ * default flow control setting, so we explicitly set it to full.
+ */
+ if (hw->fc.type == ixgbe_fc_default)
+ hw->fc.type = ixgbe_fc_full;
+
/*
* We want to save off the original Flow Control configuration just in
* case we get disconnected and then reconnected into a different hub
IXGBE_WRITE_REG(hw, IXGBE_FCTRL, frctl_reg);
IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);
+ /*
+ * Check for invalid software configuration, zeros are completely
+ * invalid for all parameters used past this point, and if we enable
+ * flow control with zero water marks, we blast flow control packets.
+ */
+ if (!hw->fc.low_water || !hw->fc.high_water || !hw->fc.pause_time) {
+ hw_dbg(hw, "Flow control structure initialized incorrectly\n");
+ return IXGBE_ERR_INVALID_LINK_SETTINGS;
+ }
+
/*
* We need to set up the Receive Threshold high and low water
* marks as well as (optionally) enabling the transmission of
adapter->tx_eitr = 1;
/* default flow control settings */
- hw->fc.original_type = ixgbe_fc_full;
- hw->fc.type = ixgbe_fc_full;
+ hw->fc.original_type = ixgbe_fc_none;
+ hw->fc.type = ixgbe_fc_none;
+ hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
+ hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
+ hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
+ hw->fc.send_xon = true;
/* select 10G link by default */
hw->mac.link_mode_select = IXGBE_AUTOC_LMS_10G_LINK_NO_AN;
INIT_WORK(&adapter->reset_task, ixgbe_reset_task);
- /* initialize default flow control settings */
- hw->fc.original_type = ixgbe_fc_full;
- hw->fc.type = ixgbe_fc_full;
- hw->fc.high_water = IXGBE_DEFAULT_FCRTH;
- hw->fc.low_water = IXGBE_DEFAULT_FCRTL;
- hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE;
-
err = ixgbe_init_interrupt_scheme(adapter);
if (err)
goto err_sw_init;