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 */
ice_find_q_in_range(u16 low,u16 high,unsigned int tx_q)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
ice_set_cgd_num(struct ice_tlan_ctx * tlan_ctx,u8 dcb_tc)50 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
51 {
52 tlan_ctx->cgd_num = dcb_tc;
53 }
54
ice_is_dcb_active(struct ice_pf * pf)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
ice_get_pfc_mode(struct ice_pf * pf)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
ice_dcb_rebuild(struct ice_pf * pf)67 static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
68
ice_vsi_set_dcb_tc_cfg(struct ice_vsi * vsi)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
ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_tc(struct ice_vsi __always_unused * vsi,int __always_unused queue_index)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
ice_init_pf_dcb(struct ice_pf * pf,bool __always_unused locked)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
ice_pf_dcb_cfg(struct ice_pf __always_unused * pf,struct ice_dcbx_cfg __always_unused * new_cfg,bool __always_unused locked)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
ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused * tx_ring,struct ice_tx_buf __always_unused * first)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
ice_is_dcb_active(struct ice_pf __always_unused * pf)114 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
115 {
116 return false;
117 }
118
119 static inline bool
ice_is_pfc_causing_hung_q(struct ice_pf __always_unused * pf,unsigned int __always_unused txqueue)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
ice_get_pfc_mode(struct ice_pf * pf)126 static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
127 {
128 return 0;
129 }
130
ice_pf_dcb_recfg(struct ice_pf * pf,bool locked)131 static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }
ice_vsi_cfg_dcb_rings(struct ice_vsi * vsi)132 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
ice_update_dcb_stats(struct ice_pf * pf)133 static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
134 static inline void
ice_dcb_process_lldp_set_mib_change(struct ice_pf * pf,struct ice_rq_event_info * event)135 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)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