1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com> 3 */ 4 #ifndef _SJA1105_TAS_H 5 #define _SJA1105_TAS_H 6 7 #include <net/pkt_sched.h> 8 9 #define SJA1105_TAS_MAX_DELTA BIT(18) 10 11 struct sja1105_private; 12 13 #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) 14 15 enum sja1105_tas_state { 16 SJA1105_TAS_STATE_DISABLED, 17 SJA1105_TAS_STATE_ENABLED_NOT_RUNNING, 18 SJA1105_TAS_STATE_RUNNING, 19 }; 20 21 enum sja1105_ptp_op { 22 SJA1105_PTP_NONE, 23 SJA1105_PTP_CLOCKSTEP, 24 SJA1105_PTP_ADJUSTFREQ, 25 }; 26 27 struct sja1105_gate_entry { 28 struct list_head list; 29 struct sja1105_rule *rule; 30 s64 interval; 31 u8 gate_state; 32 }; 33 34 struct sja1105_gating_config { 35 u64 cycle_time; 36 s64 base_time; 37 int num_entries; 38 struct list_head entries; 39 }; 40 41 struct sja1105_tas_data { 42 struct tc_taprio_qopt_offload *offload[SJA1105_MAX_NUM_PORTS]; 43 struct sja1105_gating_config gating_cfg; 44 enum sja1105_tas_state state; 45 enum sja1105_ptp_op last_op; 46 struct work_struct tas_work; 47 s64 earliest_base_time; 48 s64 oper_base_time; 49 u64 max_cycle_time; 50 bool enabled; 51 }; 52 53 int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port, 54 struct tc_taprio_qopt_offload *admin); 55 56 void sja1105_tas_setup(struct dsa_switch *ds); 57 58 void sja1105_tas_teardown(struct dsa_switch *ds); 59 60 void sja1105_tas_clockstep(struct dsa_switch *ds); 61 62 void sja1105_tas_adjfreq(struct dsa_switch *ds); 63 64 bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port, 65 struct netlink_ext_ack *extack); 66 67 int sja1105_init_scheduling(struct sja1105_private *priv); 68 69 #else 70 71 /* C doesn't allow empty structures, bah! */ 72 struct sja1105_tas_data { 73 u8 dummy; 74 }; 75 76 static inline int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port, 77 struct tc_taprio_qopt_offload *admin) 78 { 79 return -EOPNOTSUPP; 80 } 81 82 static inline void sja1105_tas_setup(struct dsa_switch *ds) { } 83 84 static inline void sja1105_tas_teardown(struct dsa_switch *ds) { } 85 86 static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { } 87 88 static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { } 89 90 static inline bool 91 sja1105_gating_check_conflicts(struct dsa_switch *ds, int port, 92 struct netlink_ext_ack *extack) 93 { 94 return true; 95 } 96 97 static inline int sja1105_init_scheduling(struct sja1105_private *priv) 98 { 99 return 0; 100 } 101 102 #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */ 103 104 #endif /* _SJA1105_TAS_H */ 105