ice: Add code for DCB initialization part 1/4

This patch introduces a skeleton for ice_init_pf_dcb, the top level
function for DCB initialization. Subsequent patches will add to this
DCB init flow.

In this patch, ice_init_pf_dcb checks if DCB is a supported capability.
If so, an admin queue call to start the LLDP and DCBx in firmware is
issued. If not, an error is reported. Note that we don't fail the driver
init if DCB init fails.

Reviewed-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb.h b/drivers/net/ethernet/intel/ice/ice_dcb.h
new file mode 100644
index 000000000000..071d205c983c
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_dcb.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2019, Intel Corporation. */
+
+#ifndef _ICE_DCB_H_
+#define _ICE_DCB_H_
+
+#include "ice_type.h"
+
+#define ICE_DCBX_STATUS_IN_PROGRESS	1
+#define ICE_DCBX_STATUS_DONE		2
+
+u8 ice_get_dcbx_status(struct ice_hw *hw);
+#ifdef CONFIG_DCB
+enum ice_status ice_aq_start_lldp(struct ice_hw *hw, struct ice_sq_cd *cd);
+enum ice_status
+ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
+		       bool *dcbx_agent_status, struct ice_sq_cd *cd);
+#else /* CONFIG_DCB */
+static inline enum ice_status
+ice_aq_start_lldp(struct ice_hw __always_unused *hw,
+		  struct ice_sq_cd __always_unused *cd)
+{
+	return 0;
+}
+
+static inline enum ice_status
+ice_aq_start_stop_dcbx(struct ice_hw __always_unused *hw,
+		       bool __always_unused start_dcbx_agent,
+		       bool *dcbx_agent_status,
+		       struct ice_sq_cd __always_unused *cd)
+{
+	*dcbx_agent_status = false;
+
+	return 0;
+}
+#endif /* CONFIG_DCB */
+#endif /* _ICE_DCB_H_ */