1/* SPDX-License-Identifier: GPL-2.0 */
  2/* Copyright (c) 2019, Intel Corporation. */
  3
  4#ifndef _ICE_DCB_LIB_H_
  5#define _ICE_DCB_LIB_H_
  6
  7#include "ice.h"
  8#include "ice_base.h"
  9#include "ice_lib.h"
 10
 11#ifdef CONFIG_DCB
 12#define ICE_TC_MAX_BW		100 /* Default Max BW percentage */
 13#define ICE_DCB_HW_CHG_RST	0 /* DCB configuration changed with reset */
 14#define ICE_DCB_NO_HW_CHG	1 /* DCB configuration did not change */
 15#define ICE_DCB_HW_CHG		2 /* DCB configuration changed, no reset */
 16
 17void ice_dcb_rebuild(struct ice_pf *pf);
 18int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked);
 19u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg);
 20void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi);
 21bool ice_is_pfc_causing_hung_q(struct ice_pf *pf, unsigned int txqueue);
 22u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index);
 23int
 24ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked);
 25int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg);
 26void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked);
 27void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi);
 28int ice_init_pf_dcb(struct ice_pf *pf, bool locked);
 29void ice_update_dcb_stats(struct ice_pf *pf);
 30void
 31ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring,
 32			      struct ice_tx_buf *first);
 33void
 34ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
 35				    struct ice_rq_event_info *event);
 36/**
 37 * ice_find_q_in_range
 38 * @low: start of queue range for a TC i.e. offset of TC
 39 * @high: start of queue for next TC
 40 * @tx_q: hung_queue/tx_queue
 41 *
 42 * finds if queue 'tx_q' falls between the two offsets of any given TC
 43 */
 44static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q)
 45{
 46	return (tx_q >= low) && (tx_q < high);
 47}
 48
 49static inline void
 50ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
 51{
 52	tlan_ctx->cgd_num = dcb_tc;
 53}
 54
 55static inline bool ice_is_dcb_active(struct ice_pf *pf)
 56{
 57	return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) ||
 58		test_bit(ICE_FLAG_DCB_ENA, pf->flags));
 59}
 60
 61static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
 62{
 63	return pf->hw.port_info->qos_cfg.local_dcbx_cfg.pfc_mode;
 64}
 65
 66#else
 67static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
 68
 69static inline void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi)
 70{
 71	vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;
 72	vsi->tc_cfg.numtc = 1;
 73}
 74
 75static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 76{
 77	return ICE_DFLT_TRAFFIC_CLASS;
 78}
 79
 80static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 81{
 82	return 1;
 83}
 84
 85static inline u8
 86ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
 87	       int __always_unused queue_index)
 88{
 89	return 0;
 90}
 91
 92static inline int
 93ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)
 94{
 95	dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");
 96	return -EOPNOTSUPP;
 97}
 98
 99static inline int
100ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,
101	       struct ice_dcbx_cfg __always_unused *new_cfg,
102	       bool __always_unused locked)
103{
104	return -EOPNOTSUPP;
105}
106
107static inline int
108ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused *tx_ring,
109			      struct ice_tx_buf __always_unused *first)
110{
111	return 0;
112}
113
114static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
115{
116	return false;
117}
118
119static inline bool
120ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
121			  unsigned int __always_unused txqueue)
122{
123	return false;
124}
125
126static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
127{
128	return 0;
129}
130
131static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }
132static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
133static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
134static inline void
135ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }
136static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { }
137#endif /* CONFIG_DCB */
138#endif /* _ICE_DCB_LIB_H_ */