1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
3*4882a593Smuzhiyun */
4*4882a593Smuzhiyun #ifndef _SJA1105_TAS_H
5*4882a593Smuzhiyun #define _SJA1105_TAS_H
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <net/pkt_sched.h>
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define SJA1105_TAS_MAX_DELTA BIT(18)
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun struct sja1105_private;
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS)
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun enum sja1105_tas_state {
16*4882a593Smuzhiyun SJA1105_TAS_STATE_DISABLED,
17*4882a593Smuzhiyun SJA1105_TAS_STATE_ENABLED_NOT_RUNNING,
18*4882a593Smuzhiyun SJA1105_TAS_STATE_RUNNING,
19*4882a593Smuzhiyun };
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun enum sja1105_ptp_op {
22*4882a593Smuzhiyun SJA1105_PTP_NONE,
23*4882a593Smuzhiyun SJA1105_PTP_CLOCKSTEP,
24*4882a593Smuzhiyun SJA1105_PTP_ADJUSTFREQ,
25*4882a593Smuzhiyun };
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun struct sja1105_gate_entry {
28*4882a593Smuzhiyun struct list_head list;
29*4882a593Smuzhiyun struct sja1105_rule *rule;
30*4882a593Smuzhiyun s64 interval;
31*4882a593Smuzhiyun u8 gate_state;
32*4882a593Smuzhiyun };
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun struct sja1105_gating_config {
35*4882a593Smuzhiyun u64 cycle_time;
36*4882a593Smuzhiyun s64 base_time;
37*4882a593Smuzhiyun int num_entries;
38*4882a593Smuzhiyun struct list_head entries;
39*4882a593Smuzhiyun };
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun struct sja1105_tas_data {
42*4882a593Smuzhiyun struct tc_taprio_qopt_offload *offload[SJA1105_NUM_PORTS];
43*4882a593Smuzhiyun struct sja1105_gating_config gating_cfg;
44*4882a593Smuzhiyun enum sja1105_tas_state state;
45*4882a593Smuzhiyun enum sja1105_ptp_op last_op;
46*4882a593Smuzhiyun struct work_struct tas_work;
47*4882a593Smuzhiyun s64 earliest_base_time;
48*4882a593Smuzhiyun s64 oper_base_time;
49*4882a593Smuzhiyun u64 max_cycle_time;
50*4882a593Smuzhiyun bool enabled;
51*4882a593Smuzhiyun };
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
54*4882a593Smuzhiyun struct tc_taprio_qopt_offload *admin);
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun void sja1105_tas_setup(struct dsa_switch *ds);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun void sja1105_tas_teardown(struct dsa_switch *ds);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun void sja1105_tas_clockstep(struct dsa_switch *ds);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun void sja1105_tas_adjfreq(struct dsa_switch *ds);
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun bool sja1105_gating_check_conflicts(struct sja1105_private *priv, int port,
65*4882a593Smuzhiyun struct netlink_ext_ack *extack);
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun int sja1105_init_scheduling(struct sja1105_private *priv);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun #else
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun /* C doesn't allow empty structures, bah! */
72*4882a593Smuzhiyun struct sja1105_tas_data {
73*4882a593Smuzhiyun u8 dummy;
74*4882a593Smuzhiyun };
75*4882a593Smuzhiyun
sja1105_setup_tc_taprio(struct dsa_switch * ds,int port,struct tc_taprio_qopt_offload * admin)76*4882a593Smuzhiyun static inline int sja1105_setup_tc_taprio(struct dsa_switch *ds, int port,
77*4882a593Smuzhiyun struct tc_taprio_qopt_offload *admin)
78*4882a593Smuzhiyun {
79*4882a593Smuzhiyun return -EOPNOTSUPP;
80*4882a593Smuzhiyun }
81*4882a593Smuzhiyun
sja1105_tas_setup(struct dsa_switch * ds)82*4882a593Smuzhiyun static inline void sja1105_tas_setup(struct dsa_switch *ds) { }
83*4882a593Smuzhiyun
sja1105_tas_teardown(struct dsa_switch * ds)84*4882a593Smuzhiyun static inline void sja1105_tas_teardown(struct dsa_switch *ds) { }
85*4882a593Smuzhiyun
sja1105_tas_clockstep(struct dsa_switch * ds)86*4882a593Smuzhiyun static inline void sja1105_tas_clockstep(struct dsa_switch *ds) { }
87*4882a593Smuzhiyun
sja1105_tas_adjfreq(struct dsa_switch * ds)88*4882a593Smuzhiyun static inline void sja1105_tas_adjfreq(struct dsa_switch *ds) { }
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun static inline bool
sja1105_gating_check_conflicts(struct dsa_switch * ds,int port,struct netlink_ext_ack * extack)91*4882a593Smuzhiyun sja1105_gating_check_conflicts(struct dsa_switch *ds, int port,
92*4882a593Smuzhiyun struct netlink_ext_ack *extack)
93*4882a593Smuzhiyun {
94*4882a593Smuzhiyun return true;
95*4882a593Smuzhiyun }
96*4882a593Smuzhiyun
sja1105_init_scheduling(struct sja1105_private * priv)97*4882a593Smuzhiyun static inline int sja1105_init_scheduling(struct sja1105_private *priv)
98*4882a593Smuzhiyun {
99*4882a593Smuzhiyun return 0;
100*4882a593Smuzhiyun }
101*4882a593Smuzhiyun
102*4882a593Smuzhiyun #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_TAS) */
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun #endif /* _SJA1105_TAS_H */
105