net/ixgbe/base: add function to reset swfw semaphore

[dpdk.git] / drivers / net / ixgbe / base / ixgbe_x540.c

diff --git a/drivers/net/ixgbe/base/ixgbe_x540.c b/drivers/net/ixgbe/base/ixgbe_x540.c
index 0678913..31dead0 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_x540.c
+++ b/drivers/net/ixgbe/base/ixgbe_x540.c
@@ -99,6 +99,7 @@ s32 ixgbe_init_ops_X540(struct ixgbe_hw *hw)
        mac->ops.get_fcoe_boot_status = ixgbe_get_fcoe_boot_status_generic;
        mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X540;
        mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X540;
+       mac->ops.init_swfw_sync = ixgbe_init_swfw_sync_X540;
        mac->ops.disable_sec_rx_path = ixgbe_disable_sec_rx_path_generic;
        mac->ops.enable_sec_rx_path = ixgbe_enable_sec_rx_path_generic;
 
@@ -945,6 +946,25 @@ STATIC void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw)
        IXGBE_WRITE_FLUSH(hw);
 }
 
+/**
+ *  ixgbe_init_swfw_sync_X540 - Release hardware semaphore
+ *  @hw: pointer to hardware structure
+ *
+ *  This function reset hardware semaphore bits for a semaphore that may
+ *  have be left locked due to a catastrophic failure.
+ **/
+void ixgbe_init_swfw_sync_X540(struct ixgbe_hw *hw)
+{
+       /* First try to grab the semaphore but we don't need to bother
+        * looking to see whether we got the lock or  not since we do
+        * the same thing regardless of whether we got the lock or not.
+        * We got the lock - we release it.
+        * We timeout trying to get the lock - we force its release.
+        */
+       ixgbe_get_swfw_sync_semaphore(hw);
+       ixgbe_release_swfw_sync_semaphore(hw);
+}
+
 /**
  * ixgbe_blink_led_start_X540 - Blink LED based on index.
  * @hw: pointer to hardware structure