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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
*/
#ifndef _SJA1105_TAS_H
#define _SJA1105_TAS_H
#include <net/pkt_sched.h>
#define SJA1105_TAS_MAX_DELTA BIT(18)
struct sja1105_private;
#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
enum sja1105_tas_state {
SJA1105_TAS_STATE_DISABLED,
SJA1105_TAS_STATE_ENABLED_NOT_RUNNING,
SJA1105_TAS_STATE_RUNNING,
};
enum sja1105_ptp_op {
SJA1105_PTP_NONE,
SJA1105_PTP_CLOCKSTEP,
SJA1105_PTP_ADJUSTFREQ,
};
struct sja1105_gate_entry {
struct list_head list;
struct sja1105_rule *rule;
s64 interval;
u8 gate_state;
};
struct sja1105_gating_config {
u64 cycle_time;
s64 base_time;
int num_entries;
struct list_head entries;
};
struct sja1105_tas_data {
struct tc_taprio_qopt_offload *offload[SJA1105_NUM_PORTS];
struct sja1105_gating_config gating_cfg;
enum sja1105_tas_state state;
enum sja1105_ptp_op last_op;
struct work_struct tas_work;
s64 earliest_base_time;
s64 oper_base_time;
u64 max_cycle_time;
bool enabled;
};
int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
struct tc_taprio_qopt_offload *admin);
void sja1105_tas_setup(struct dsa_switch *ds);
void sja1105_tas_teardown(struct dsa_switch *ds);
void sja1105_tas_clockstep(struct dsa_switch *ds);
void sja1105_tas_adjfreq(struct dsa_switch *ds);
bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
struct netlink_ext_ack *extack);
int sja1105_init_scheduling(struct sja1105_private *priv);
#else
/* C doesn't allow empty structures, bah! */
struct sja1105_tas_data {
u8 dummy;
};
static inline int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
struct tc_taprio_qopt_offload *admin)
{
return -EOPNOTSUPP;
}
static inline void sja1105_tas_setup(struct dsa_switch *ds) { }
static inline void sja1105_tas_teardown(struct dsa_switch *ds) { }
static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
static inline bool
sja1105_gating_check_conflicts(struct dsa_switch *ds, int port,
struct netlink_ext_ack *extack)
{
return true;
}
static inline int sja1105_init_scheduling(struct sja1105_private *priv)
{
return 0;
}
#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */
#endif /* _SJA1105_TAS_H */
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