[Patch net-next v1 02/12] net: dsa: microchip: ptp: Initial hardware time stamping support
From: Arun Ramadoss <arun.ramadoss@microchip.com>
Date: 2022-11-28 10:33:43
Also in:
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Subsystem:
microchip ksz series ethernet switch driver, networking drivers, networking [dsa], the rest · Maintainers:
Woojung Huh, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
From: Christian Eggers <ceggers@arri.de> This patch adds the routine for get_ts_info, hwstamp_get, set. This enables the PTP support towards userspace applications such as linuxptp. Tx timestamping can be enabled per port and Rx timestamping enabled globally. Signed-off-by: Christian Eggers <ceggers@arri.de> Co-developed-by: Arun Ramadoss <arun.ramadoss@microchip.com> Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com> --- RFC v2 -> Patch v1 - moved tagger set and get function to separate patch - Removed unnecessary comments --- drivers/net/dsa/microchip/ksz_common.c | 2 + drivers/net/dsa/microchip/ksz_common.h | 4 ++ drivers/net/dsa/microchip/ksz_ptp.c | 77 +++++++++++++++++++++++++- drivers/net/dsa/microchip/ksz_ptp.h | 14 +++++ 4 files changed, 95 insertions(+), 2 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 2d09cd141db6..7b85b258270c 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c@@ -2873,6 +2873,8 @@ static const struct dsa_switch_ops ksz_switch_ops = { .port_change_mtu = ksz_change_mtu, .port_max_mtu = ksz_max_mtu, .get_ts_info = ksz_get_ts_info, + .port_hwtstamp_get = ksz_hwtstamp_get, + .port_hwtstamp_set = ksz_hwtstamp_set, }; struct ksz_device *ksz_switch_alloc(struct device *base, void *priv)
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 5a6bfd42c6f9..cd20f39a565f 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h@@ -103,6 +103,10 @@ struct ksz_port { struct ksz_device *ksz_dev; struct ksz_irq pirq; u8 num; +#if IS_ENABLED(CONFIG_NET_DSA_MICROCHIP_KSZ_PTP) + u8 hwts_tx_en; + bool hwts_rx_en; +#endif }; struct ksz_device {
diff --git a/drivers/net/dsa/microchip/ksz_ptp.c b/drivers/net/dsa/microchip/ksz_ptp.c
index c737635ca266..a41418c6adf6 100644
--- a/drivers/net/dsa/microchip/ksz_ptp.c
+++ b/drivers/net/dsa/microchip/ksz_ptp.c@@ -36,15 +36,88 @@ int ksz_get_ts_info(struct dsa_switch *ds, int port, struct ethtool_ts_info *ts) SOF_TIMESTAMPING_RX_HARDWARE | SOF_TIMESTAMPING_RAW_HARDWARE; - ts->tx_types = BIT(HWTSTAMP_TX_OFF); + ts->tx_types = BIT(HWTSTAMP_TX_OFF) | BIT(HWTSTAMP_TX_ONESTEP_P2P); - ts->rx_filters = BIT(HWTSTAMP_FILTER_NONE); + ts->rx_filters = BIT(HWTSTAMP_FILTER_NONE) | BIT(HWTSTAMP_FILTER_ALL); ts->phc_index = ptp_clock_index(ptp_data->clock); return 0; } +int ksz_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr) +{ + struct ksz_device *dev = ds->priv; + struct hwtstamp_config config; + + config.flags = 0; + + config.tx_type = dev->ports[port].hwts_tx_en; + + if (dev->ports[port].hwts_rx_en) + config.rx_filter = HWTSTAMP_FILTER_ALL; + else + config.rx_filter = HWTSTAMP_FILTER_NONE; + + return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? + -EFAULT : 0; +} + +static int ksz_set_hwtstamp_config(struct ksz_device *dev, int port, + struct hwtstamp_config *config) +{ + struct ksz_port *prt = &dev->ports[port]; + + if (config->flags) + return -EINVAL; + + switch (config->tx_type) { + case HWTSTAMP_TX_OFF: + case HWTSTAMP_TX_ONESTEP_P2P: + prt->hwts_tx_en = config->tx_type; + break; + default: + return -ERANGE; + } + + switch (config->rx_filter) { + case HWTSTAMP_FILTER_NONE: + prt->hwts_rx_en = false; + break; + default: + prt->hwts_rx_en = true; + break; + } + + return 0; +} + +int ksz_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr) +{ + struct ksz_device *dev = ds->priv; + struct ksz_ptp_data *ptp_data; + struct hwtstamp_config config; + int ret; + + ptp_data = &dev->ptp_data; + + mutex_lock(&ptp_data->lock); + + ret = copy_from_user(&config, ifr->ifr_data, sizeof(config)); + if (ret) + goto error_return; + + ret = ksz_set_hwtstamp_config(dev, port, &config); + if (ret) + goto error_return; + + ret = copy_to_user(ifr->ifr_data, &config, sizeof(config)); + +error_return: + mutex_unlock(&ptp_data->lock); + return ret; +} + static int _ksz_ptp_gettime(struct ksz_device *dev, struct timespec64 *ts) { u32 nanoseconds;
diff --git a/drivers/net/dsa/microchip/ksz_ptp.h b/drivers/net/dsa/microchip/ksz_ptp.h
index ea9fa46caa01..17f455c3b2c5 100644
--- a/drivers/net/dsa/microchip/ksz_ptp.h
+++ b/drivers/net/dsa/microchip/ksz_ptp.h@@ -23,6 +23,8 @@ void ksz_ptp_clock_unregister(struct dsa_switch *ds); int ksz_get_ts_info(struct dsa_switch *ds, int port, struct ethtool_ts_info *ts); +int ksz_hwtstamp_get(struct dsa_switch *ds, int port, struct ifreq *ifr); +int ksz_hwtstamp_set(struct dsa_switch *ds, int port, struct ifreq *ifr); #else
@@ -40,6 +42,18 @@ static inline void ksz_ptp_clock_unregister(struct dsa_switch *ds) { } #define ksz_get_ts_info NULL +static inline int ksz_hwtstamp_get(struct dsa_switch *ds, int port, + struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} + +static inline int ksz_hwtstamp_set(struct dsa_switch *ds, int port, + struct ifreq *ifr) +{ + return -EOPNOTSUPP; +} + #endif /* End of CONFIG_NET_DSA_MICROCHIP_KSZ_PTP */ #endif
--
2.36.1