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 17 void ice_dcb_rebuild(struct ice_pf *pf); 18 int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked); 19 u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg); 20 void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi); 21 bool ice_is_pfc_causing_hung_q(struct ice_pf *pf, unsigned int txqueue); 22 u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index); 23 int 24 ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked); 25 int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg); 26 void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked); 27 void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi); 28 int ice_init_pf_dcb(struct ice_pf *pf, bool locked); 29 void ice_update_dcb_stats(struct ice_pf *pf); 30 void 31 ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring, 32 struct ice_tx_buf *first); 33 void 34 ice_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 */ 44 static 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 49 static inline void 50 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) 51 { 52 tlan_ctx->cgd_num = dcb_tc; 53 } 54 55 static 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 61 static 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 67 static inline void ice_dcb_rebuild(struct ice_pf *pf) { } 68 69 static 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 75 static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 76 { 77 return ICE_DFLT_TRAFFIC_CLASS; 78 } 79 80 static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 81 { 82 return 1; 83 } 84 85 static inline u8 86 ice_dcb_get_tc(struct ice_vsi __always_unused *vsi, 87 int __always_unused queue_index) 88 { 89 return 0; 90 } 91 92 static inline int 93 ice_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 99 static inline int 100 ice_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 } 106 107 static inline int 108 ice_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 } 113 114 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf) 115 { 116 return false; 117 } 118 119 static inline bool 120 ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf, 121 unsigned int __always_unused txqueue) 122 { 123 return false; 124 } 125 126 static inline u8 ice_get_pfc_mode(struct ice_pf *pf) 127 { 128 return 0; 129 } 130 131 static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { } 132 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { } 133 static inline void ice_update_dcb_stats(struct ice_pf *pf) { } 134 static inline void 135 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { } 136 static 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_ */ 139