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_setup_dcb_qos_info(struct ice_pf *pf, 35 struct iidc_rdma_qos_params *qos_info); 36 void 37 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, 38 struct ice_rq_event_info *event); 39 /** 40 * ice_find_q_in_range 41 * @low: start of queue range for a TC i.e. offset of TC 42 * @high: start of queue for next TC 43 * @tx_q: hung_queue/tx_queue 44 * 45 * finds if queue 'tx_q' falls between the two offsets of any given TC 46 */ 47 static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q) 48 { 49 return (tx_q >= low) && (tx_q < high); 50 } 51 52 static inline void 53 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) 54 { 55 tlan_ctx->cgd_num = dcb_tc; 56 } 57 58 static inline bool ice_is_dcb_active(struct ice_pf *pf) 59 { 60 return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) || 61 test_bit(ICE_FLAG_DCB_ENA, pf->flags)); 62 } 63 64 static inline u8 ice_get_pfc_mode(struct ice_pf *pf) 65 { 66 return pf->hw.port_info->qos_cfg.local_dcbx_cfg.pfc_mode; 67 } 68 69 #else 70 static inline void ice_dcb_rebuild(struct ice_pf *pf) { } 71 72 static inline void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi) 73 { 74 vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS; 75 vsi->tc_cfg.numtc = 1; 76 } 77 78 static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 79 { 80 return ICE_DFLT_TRAFFIC_CLASS; 81 } 82 83 static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 84 { 85 return 1; 86 } 87 88 static inline u8 89 ice_dcb_get_tc(struct ice_vsi __always_unused *vsi, 90 int __always_unused queue_index) 91 { 92 return 0; 93 } 94 95 static inline int 96 ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked) 97 { 98 dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n"); 99 return -EOPNOTSUPP; 100 } 101 102 static inline int 103 ice_pf_dcb_cfg(struct ice_pf __always_unused *pf, 104 struct ice_dcbx_cfg __always_unused *new_cfg, 105 bool __always_unused locked) 106 { 107 return -EOPNOTSUPP; 108 } 109 110 static inline int 111 ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused *tx_ring, 112 struct ice_tx_buf __always_unused *first) 113 { 114 return 0; 115 } 116 117 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf) 118 { 119 return false; 120 } 121 122 static inline bool 123 ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf, 124 unsigned int __always_unused txqueue) 125 { 126 return false; 127 } 128 129 static inline u8 ice_get_pfc_mode(struct ice_pf *pf) 130 { 131 return 0; 132 } 133 134 static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { } 135 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { } 136 static inline void ice_update_dcb_stats(struct ice_pf *pf) { } 137 static inline void 138 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { } 139 static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { } 140 static inline void 141 ice_setup_dcb_qos_info(struct ice_pf *pf, struct iidc_rdma_qos_params *qos_info) 142 { 143 qos_info->num_tc = 1; 144 qos_info->tc_info[0].rel_bw = 100; 145 } 146 #endif /* CONFIG_DCB */ 147 #endif /* _ICE_DCB_LIB_H_ */ 148