From: Martin Habets <mhab...@solarflare.com>
Use MC capability MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING to
detect whether the NIC supports timestamping packets sent out the main
datapath.
Signed-off-by: Martin Habets <mhab...@solarflare.com>
Signed-off-by: Edward Cree <ec...@solarflare.com>
---
drivers/net/ethernet/sfc/nic.h | 1 +
drivers/net/ethernet/sfc/ptp.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 54bfbba5ffe6..43a3fa1486ec 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -471,6 +471,7 @@ static inline void efx_rx_skb_attach_timestamp(struct
efx_channel *channel,
}
void efx_ptp_start_datapath(struct efx_nic *efx);
void efx_ptp_stop_datapath(struct efx_nic *efx);
+bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx);
ktime_t efx_ptp_nic_to_kernel_time(struct efx_tx_queue *tx_queue);
extern const struct efx_nic_type falcon_a1_nic_type;
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 976d38bf6068..096b2f7a4835 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -329,6 +329,16 @@ static int efx_phc_settime(struct ptp_clock_info *ptp,
static int efx_phc_enable(struct ptp_clock_info *ptp,
struct ptp_clock_request *request, int on);
+bool efx_ptp_use_mac_tx_timestamps(struct efx_nic *efx)
+{
+ struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+ return ((efx_nic_rev(efx) >= EFX_REV_HUNT_A0) &&
+ (nic_data->datapath_caps2 &
+ (1 << MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING_LBN)
+ ));
+}
+
#define PTP_SW_STAT(ext_name, field_name) \
{ #ext_name, 0, offsetof(struct efx_ptp_data, field_name) }
#define PTP_MC_STAT(ext_name, mcdi_name) \
