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 */
ice_find_q_in_range(u16 low,u16 high,unsigned int tx_q)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
ice_set_cgd_num(struct ice_tlan_ctx * tlan_ctx,u8 dcb_tc)53 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
54 {
55 tlan_ctx->cgd_num = dcb_tc;
56 }
57
ice_is_dcb_active(struct ice_pf * pf)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
ice_get_pfc_mode(struct ice_pf * pf)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
ice_dcb_rebuild(struct ice_pf * pf)70 static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
71
ice_vsi_set_dcb_tc_cfg(struct ice_vsi * vsi)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
ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_tc(struct ice_vsi __always_unused * vsi,int __always_unused queue_index)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
ice_init_pf_dcb(struct ice_pf * pf,bool __always_unused locked)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
ice_pf_dcb_cfg(struct ice_pf __always_unused * pf,struct ice_dcbx_cfg __always_unused * new_cfg,bool __always_unused locked)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
ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused * tx_ring,struct ice_tx_buf __always_unused * first)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
ice_is_dcb_active(struct ice_pf __always_unused * pf)117 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
118 {
119 return false;
120 }
121
122 static inline bool
ice_is_pfc_causing_hung_q(struct ice_pf __always_unused * pf,unsigned int __always_unused txqueue)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
ice_get_pfc_mode(struct ice_pf * pf)129 static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
130 {
131 return 0;
132 }
133
ice_pf_dcb_recfg(struct ice_pf * pf,bool locked)134 static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }
ice_vsi_cfg_dcb_rings(struct ice_vsi * vsi)135 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
ice_update_dcb_stats(struct ice_pf * pf)136 static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
137 static inline void
ice_dcb_process_lldp_set_mib_change(struct ice_pf * pf,struct ice_rq_event_info * event)138 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }
ice_set_cgd_num(struct ice_tlan_ctx * tlan_ctx,u8 dcb_tc)139 static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { }
140 static inline void
ice_setup_dcb_qos_info(struct ice_pf * pf,struct iidc_rdma_qos_params * qos_info)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