drivers/net/dsa/sja1105/sja1105_tas.h

   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 #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
  10
  11 enum sja1105_tas_state {
  12         SJA1105_TAS_STATE_DISABLED,
  13         SJA1105_TAS_STATE_ENABLED_NOT_RUNNING,
  14         SJA1105_TAS_STATE_RUNNING,
  15 };
  16
  17 enum sja1105_ptp_op {
  18         SJA1105_PTP_NONE,
  19         SJA1105_PTP_CLOCKSTEP,
  20         SJA1105_PTP_ADJUSTFREQ,
  21 };
  22
  23 struct sja1105_tas_data {
  24         struct tc_taprio_qopt_offload *offload[SJA1105_NUM_PORTS];
  25         enum sja1105_tas_state state;
  26         enum sja1105_ptp_op last_op;
  27         struct work_struct tas_work;
  28         s64 earliest_base_time;
  29         s64 oper_base_time;
  30         u64 max_cycle_time;
  31         bool enabled;
  32 };
  33
  34 int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
  35                             struct tc_taprio_qopt_offload *admin);
  36
  37 void sja1105_tas_setup(struct dsa_switch *ds);
  38
  39 void sja1105_tas_teardown(struct dsa_switch *ds);
  40
  41 void sja1105_tas_clockstep(struct dsa_switch *ds);
  42
  43 void sja1105_tas_adjfreq(struct dsa_switch *ds);
  44
  45 #else
  46
  47 /* C doesn't allow empty structures, bah! */
  48 struct sja1105_tas_data {
  49         u8 dummy;
  50 };
  51
  52 static inline int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
  53                                           struct tc_taprio_qopt_offload *admin)
  54 {
  55         return -EOPNOTSUPP;
  56 }
  57
  58 static inline void sja1105_tas_setup(struct dsa_switch *ds) { }
  59
  60 static inline void sja1105_tas_teardown(struct dsa_switch *ds) { }
  61
  62 static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
  63
  64 static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
  65
  66 #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */
  67
  68 #endif /* _SJA1105_TAS_H */