mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-11 04:35:49 +07:00
86db36a347
Tested using the following bash script and the tc from iproute2-next:
#!/bin/bash
set -e -u -o pipefail
NSEC_PER_SEC="1000000000"
gatemask() {
local tc_list="$1"
local mask=0
for tc in ${tc_list}; do
mask=$((${mask} | (1 << ${tc})))
done
printf "%02x" ${mask}
}
if ! systemctl is-active --quiet ptp4l; then
echo "Please start the ptp4l service"
exit
fi
now=$(phc_ctl /dev/ptp1 get | gawk '/clock time is/ { print $5; }')
# Phase-align the base time to the start of the next second.
sec=$(echo "${now}" | gawk -F. '{ print $1; }')
base_time="$(((${sec} + 1) * ${NSEC_PER_SEC}))"
tc qdisc add dev swp5 parent root handle 100 taprio \
num_tc 8 \
map 0 1 2 3 5 6 7 \
queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \
base-time ${base_time} \
sched-entry S $(gatemask 7) 100000 \
sched-entry S $(gatemask "0 1 2 3 4 5 6") 400000 \
clockid CLOCK_TAI flags 2
The "state machine" is a workqueue invoked after each manipulation
command on the PTP clock (reset, adjust time, set time, adjust
frequency) which checks over the state of the time-aware scheduler.
So it is not monitored periodically, only in reaction to a PTP command
typically triggered from a userspace daemon (linuxptp). Otherwise there
is no reason for things to go wrong.
Now that the timecounter/cyclecounter has been replaced with hardware
operations on the PTP clock, the TAS Kconfig now depends upon PTP and
the standalone clocksource operating mode has been removed.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
|
|
*/
|
|
#ifndef _SJA1105_PTP_H
|
|
#define _SJA1105_PTP_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;
|
|
}
|
|
|
|
struct sja1105_ptp_cmd {
|
|
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 ptp_clock_info caps;
|
|
struct ptp_clock *clock;
|
|
struct sja1105_ptp_cmd cmd;
|
|
/* Serializes all operations on the PTP hardware clock */
|
|
struct mutex lock;
|
|
};
|
|
|
|
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 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);
|
|
|
|
bool sja1105_port_txtstamp(struct dsa_switch *ds, int port,
|
|
struct sk_buff *skb, unsigned int type);
|
|
|
|
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);
|
|
|
|
#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
|
|
|
|
#endif /* IS_ENABLED(CONFIG_NET_DSA_SJA1105_PTP) */
|
|
|
|
#endif /* _SJA1105_PTP_H */
|