105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
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*/
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#ifndef _SJA1105_TAS_H
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#define _SJA1105_TAS_H
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#include <net/pkt_sched.h>
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#define SJA1105_TAS_MAX_DELTA BIT(18)
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struct sja1105_private;
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#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
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enum sja1105_tas_state {
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SJA1105_TAS_STATE_DISABLED,
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SJA1105_TAS_STATE_ENABLED_NOT_RUNNING,
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SJA1105_TAS_STATE_RUNNING,
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};
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enum sja1105_ptp_op {
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SJA1105_PTP_NONE,
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SJA1105_PTP_CLOCKSTEP,
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SJA1105_PTP_ADJUSTFREQ,
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};
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struct sja1105_gate_entry {
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struct list_head list;
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struct sja1105_rule *rule;
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s64 interval;
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u8 gate_state;
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};
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struct sja1105_gating_config {
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u64 cycle_time;
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s64 base_time;
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int num_entries;
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struct list_head entries;
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};
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struct sja1105_tas_data {
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struct tc_taprio_qopt_offload *offload[SJA1105_MAX_NUM_PORTS];
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struct sja1105_gating_config gating_cfg;
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enum sja1105_tas_state state;
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enum sja1105_ptp_op last_op;
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struct work_struct tas_work;
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s64 earliest_base_time;
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s64 oper_base_time;
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u64 max_cycle_time;
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bool enabled;
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};
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int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
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struct tc_taprio_qopt_offload *admin);
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void sja1105_tas_setup(struct dsa_switch *ds);
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void sja1105_tas_teardown(struct dsa_switch *ds);
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void sja1105_tas_clockstep(struct dsa_switch *ds);
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void sja1105_tas_adjfreq(struct dsa_switch *ds);
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bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
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struct netlink_ext_ack *extack);
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int sja1105_init_scheduling(struct sja1105_private *priv);
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#else
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/* C doesn't allow empty structures, bah! */
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struct sja1105_tas_data {
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u8 dummy;
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};
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static inline int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
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struct tc_taprio_qopt_offload *admin)
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{
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return -EOPNOTSUPP;
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}
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static inline void sja1105_tas_setup(struct dsa_switch *ds) { }
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static inline void sja1105_tas_teardown(struct dsa_switch *ds) { }
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static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
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static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
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static inline bool
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sja1105_gating_check_conflicts(struct dsa_switch *ds, int port,
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struct netlink_ext_ack *extack)
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{
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return true;
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}
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static inline int sja1105_init_scheduling(struct sja1105_private *priv)
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{
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return 0;
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}
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#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */
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#endif /* _SJA1105_TAS_H */
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