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path: root/drivers/net/ixgbe
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Diffstat (limited to 'drivers/net/ixgbe')
-rw-r--r--drivers/net/ixgbe/ixgbe_82598.c38
-rw-r--r--drivers/net/ixgbe/ixgbe_type.h2
2 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_82598.c b/drivers/net/ixgbe/ixgbe_82598.c
index e2d5343f127..204177d78ce 100644
--- a/drivers/net/ixgbe/ixgbe_82598.c
+++ b/drivers/net/ixgbe/ixgbe_82598.c
@@ -510,6 +510,40 @@ static s32 ixgbe_start_mac_link_82598(struct ixgbe_hw *hw,
}
/**
+ * ixgbe_validate_link_ready - Function looks for phy link
+ * @hw: pointer to hardware structure
+ *
+ * Function indicates success when phy link is available. If phy is not ready
+ * within 5 seconds of MAC indicating link, the function returns error.
+ **/
+static s32 ixgbe_validate_link_ready(struct ixgbe_hw *hw)
+{
+ u32 timeout;
+ u16 an_reg;
+
+ if (hw->device_id != IXGBE_DEV_ID_82598AT2)
+ return 0;
+
+ for (timeout = 0;
+ timeout < IXGBE_VALIDATE_LINK_READY_TIMEOUT; timeout++) {
+ hw->phy.ops.read_reg(hw, MDIO_STAT1, MDIO_MMD_AN, &an_reg);
+
+ if ((an_reg & MDIO_AN_STAT1_COMPLETE) &&
+ (an_reg & MDIO_STAT1_LSTATUS))
+ break;
+
+ msleep(100);
+ }
+
+ if (timeout == IXGBE_VALIDATE_LINK_READY_TIMEOUT) {
+ hw_dbg(hw, "Link was indicated but link is down\n");
+ return IXGBE_ERR_LINK_SETUP;
+ }
+
+ return 0;
+}
+
+/**
* ixgbe_check_mac_link_82598 - Get link/speed status
* @hw: pointer to hardware structure
* @speed: pointer to link speed
@@ -589,6 +623,10 @@ static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
else
*speed = IXGBE_LINK_SPEED_1GB_FULL;
+ if ((hw->device_id == IXGBE_DEV_ID_82598AT2) && (*link_up == true) &&
+ (ixgbe_validate_link_ready(hw) != 0))
+ *link_up = false;
+
/* if link is down, zero out the current_mode */
if (*link_up == false) {
hw->fc.current_mode = ixgbe_fc_none;
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index f3e8d52610b..84650c6ebe0 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -841,6 +841,8 @@
#define IXGBE_MPVC 0x04318
#define IXGBE_SGMIIC 0x04314
+#define IXGBE_VALIDATE_LINK_READY_TIMEOUT 50
+
/* Omer CORECTL */
#define IXGBE_CORECTL 0x014F00
/* BARCTRL */