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 | |