+/**
+ * ixgbe_iosf_wait - Wait for IOSF command completion
+ * @hw: pointer to hardware structure
+ * @ctrl: pointer to location to receive final IOSF control value
+ *
+ * Returns failing status on timeout
+ *
+ * Note: ctrl can be NULL if the IOSF control register value is not needed
+ **/
+STATIC s32 ixgbe_iosf_wait(struct ixgbe_hw *hw, u32 *ctrl)
+{
+ u32 i, command = 0;
+
+ /* Check every 10 usec to see if the address cycle completed.
+ * The SB IOSF BUSY bit will clear when the operation is
+ * complete
+ */
+ for (i = 0; i < IXGBE_MDIO_COMMAND_TIMEOUT; i++) {
+ command = IXGBE_READ_REG(hw, IXGBE_SB_IOSF_INDIRECT_CTRL);
+ if ((command & IXGBE_SB_IOSF_CTRL_BUSY) == 0)
+ break;
+ usec_delay(10);
+ }
+ if (ctrl)
+ *ctrl = command;
+ if (i == IXGBE_MDIO_COMMAND_TIMEOUT) {
+ ERROR_REPORT1(IXGBE_ERROR_POLLING, "Wait timed out\n");
+ return IXGBE_ERR_PHY;
+ }
+
+ return IXGBE_SUCCESS;
+}
+