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
11struct sja1105_private;
12
13#if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
14
15enum sja1105_tas_state {
16	SJA1105_TAS_STATE_DISABLED,
17	SJA1105_TAS_STATE_ENABLED_NOT_RUNNING,
18	SJA1105_TAS_STATE_RUNNING,
19};
20
21enum sja1105_ptp_op {
22	SJA1105_PTP_NONE,
23	SJA1105_PTP_CLOCKSTEP,
24	SJA1105_PTP_ADJUSTFREQ,
25};
26
27struct sja1105_gate_entry {
28	struct list_head list;
29	struct sja1105_rule *rule;
30	s64 interval;
31	u8 gate_state;
32};
33
34struct sja1105_gating_config {
35	u64 cycle_time;
36	s64 base_time;
37	int num_entries;
38	struct list_head entries;
39};
40
41struct 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
53int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
54			    struct tc_taprio_qopt_offload *admin);
55
56void sja1105_tas_setup(struct dsa_switch *ds);
57
58void sja1105_tas_teardown(struct dsa_switch *ds);
59
60void sja1105_tas_clockstep(struct dsa_switch *ds);
61
62void sja1105_tas_adjfreq(struct dsa_switch *ds);
63
64bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
65				    struct netlink_ext_ack *extack);
66
67int sja1105_init_scheduling(struct sja1105_private *priv);
68
69#else
70
71/* C doesn't allow empty structures, bah! */
72struct sja1105_tas_data {
73	u8 dummy;
74};
75
76static 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
82static inline void sja1105_tas_setup(struct dsa_switch *ds) { }
83
84static inline void sja1105_tas_teardown(struct dsa_switch *ds) { }
85
86static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
87
88static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
89
90static inline bool
91sja1105_gating_check_conflicts(struct dsa_switch *ds, int port,
92			       struct netlink_ext_ack *extack)
93{
94	return true;
95}
96
97static 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