Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Vladimir Oltean | 695 | 96.53% | 23 | 85.19% |
Brandon Streiff | 21 | 2.92% | 1 | 3.70% |
Nishad Kamdar | 2 | 0.28% | 1 | 3.70% |
Kory Maincent | 1 | 0.14% | 1 | 3.70% |
Yangbo Lu | 1 | 0.14% | 1 | 3.70% |
Total | 720 | 27 |
/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com> */ #ifndef _SJA1105_PTP_H #define _SJA1105_PTP_H #include <linux/timer.h> #if IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) /* Timestamps are in units of 8 ns clock ticks (equivalent to * a fixed 125 MHz clock). */ #define SJA1105_TICK_NS 8 static inline s64 ns_to_sja1105_ticks(s64 ns) { return ns / SJA1105_TICK_NS; } static inline s64 sja1105_ticks_to_ns(s64 ticks) { return ticks * SJA1105_TICK_NS; } /* Calculate the first base_time in the future that satisfies this * relationship: * * future_base_time = base_time + N x cycle_time >= now, or * * now - base_time * N >= --------------- * cycle_time * * Because N is an integer, the ceiling value of the above "a / b" ratio * is in fact precisely the floor value of "(a + b - 1) / b", which is * easier to calculate only having integer division tools. */ static inline s64 future_base_time(s64 base_time, s64 cycle_time, s64 now) { s64 a, b, n; if (base_time >= now) return base_time; a = now - base_time; b = cycle_time; n = div_s64(a + b - 1, b); return base_time + n * cycle_time; } /* This is not a preprocessor macro because the "ns" argument may or may not be * s64 at caller side. This ensures it is properly type-cast before div_s64. */ static inline s64 ns_to_sja1105_delta(s64 ns) { return div_s64(ns, 200); } static inline s64 sja1105_delta_to_ns(s64 delta) { return delta * 200; } struct sja1105_ptp_cmd { u64 startptpcp; /* start toggling PTP_CLK pin */ u64 stopptpcp; /* stop toggling PTP_CLK pin */ u64 ptpstrtsch; /* start schedule */ u64 ptpstopsch; /* stop schedule */ u64 resptp; /* reset */ u64 corrclk4ts; /* use the corrected clock for timestamps */ u64 ptpclkadd; /* enum sja1105_ptp_clk_mode */ }; struct sja1105_ptp_data { struct timer_list extts_timer; /* Used only on SJA1105 to reconstruct partial timestamps */ struct sk_buff_head skb_rxtstamp_queue; /* Used on SJA1110 where meta frames are generated only for * 2-step TX timestamps */ struct sk_buff_head skb_txtstamp_queue; struct ptp_clock_info caps; struct ptp_clock *clock; struct sja1105_ptp_cmd cmd; /* Serializes all operations on the PTP hardware clock */ struct mutex lock; bool extts_enabled; u64 ptpsyncts; }; int sja1105_ptp_clock_register(struct dsa_switch *ds); void sja1105_ptp_clock_unregister(struct dsa_switch *ds); void sja1105et_ptp_cmd_packing(u8 *buf, struct sja1105_ptp_cmd *cmd, enum packing_op op); void sja1105pqrs_ptp_cmd_packing(u8 *buf, struct sja1105_ptp_cmd *cmd, enum packing_op op); int sja1105_get_ts_info(struct dsa_switch *ds, int port, struct kernel_ethtool_ts_info *ts); void sja1105_ptp_txtstamp_skb(struct dsa_switch *ds, int slot, struct sk_buff *clone); bool sja1105_port_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb, unsigned int type); void sja1105_port_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb); int sja1105_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr); int sja1105_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr); int __sja1105_ptp_gettimex(struct dsa_switch *ds, u64 *ns, struct ptp_system_timestamp *sts); int __sja1105_ptp_settime(struct dsa_switch *ds, u64 ns, struct ptp_system_timestamp *ptp_sts); int __sja1105_ptp_adjtime(struct dsa_switch *ds, s64 delta); int sja1105_ptp_commit(struct dsa_switch *ds, struct sja1105_ptp_cmd *cmd, sja1105_spi_rw_mode_t rw); bool sja1105_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb); bool sja1110_rxtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb); void sja1110_txtstamp(struct dsa_switch *ds, int port, struct sk_buff *skb); void sja1110_process_meta_tstamp(struct dsa_switch *ds, int port, u8 ts_id, enum sja1110_meta_tstamp dir, u64 tstamp); #else struct sja1105_ptp_cmd; /* Structures cannot be empty in C. Bah! * Keep the mutex as the only element, which is a bit more difficult to * refactor out of sja1105_main.c anyway. */ struct sja1105_ptp_data { struct mutex lock; }; static inline int sja1105_ptp_clock_register(struct dsa_switch *ds) { return 0; } static inline void sja1105_ptp_clock_unregister(struct dsa_switch *ds) { } static inline void sja1105_ptp_txtstamp_skb(struct dsa_switch *ds, int slot, struct sk_buff *clone) { } static inline int __sja1105_ptp_gettimex(struct dsa_switch *ds, u64 *ns, struct ptp_system_timestamp *sts) { return 0; } static inline int __sja1105_ptp_settime(struct dsa_switch *ds, u64 ns, struct ptp_system_timestamp *ptp_sts) { return 0; } static inline int __sja1105_ptp_adjtime(struct dsa_switch *ds, s64 delta) { return 0; } static inline int sja1105_ptp_commit(struct dsa_switch *ds, struct sja1105_ptp_cmd *cmd, sja1105_spi_rw_mode_t rw) { return 0; } #define sja1105et_ptp_cmd_packing NULL #define sja1105pqrs_ptp_cmd_packing NULL #define sja1105_get_ts_info NULL #define sja1105_port_rxtstamp NULL #define sja1105_port_txtstamp NULL #define sja1105_hwtstamp_get NULL #define sja1105_hwtstamp_set NULL #define sja1105_rxtstamp NULL #define sja1110_rxtstamp NULL #define sja1110_txtstamp NULL #define sja1110_process_meta_tstamp NULL #endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) */ #endif /* _SJA1105_PTP_H */
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1