[RFC PATCH] sfc: log active datapath firmware variant on ef10/x4
From: Aaron Tomlin <atomlin@atomlin.com>
Date: 2026-09-03 02:14:45
Also in:
lkml
Subsystem:
networking drivers, sfc network driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Edward Cree, Linus Torvalds
EF10 and X4 architecture controllers support multiple datapath microcode variants (e.g., low-latency, full-feature, packed-stream, and dpdk) within the same firmware bundle. During adapter probe in efx_ef10_init_datapath_caps(), the running RX and TX DPCPU firmware IDs are queried via MC_CMD_GET_CAPABILITIES. Log the active datapath variant name and numerical ID at probe time using pci_info() so that the selected variant is immediately visible in dmesg for verification and diagnostics. Signed-off-by: Aaron Tomlin <atomlin@atomlin.com> --- drivers/net/ethernet/sfc/ef10.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 73bc064929f6..3b92e95532c5 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c@@ -105,6 +105,26 @@ static int efx_ef10_get_vf_index(struct efx_nic *efx) } #endif +static const char *efx_ef10_dpcpu_fw_variant_name(u16 dpcpu_id) +{ + switch (dpcpu_id) { + case MC_CMD_GET_CAPABILITIES_OUT_RXDP: + return "full-feature"; + case MC_CMD_GET_CAPABILITIES_OUT_RXDP_LOW_LATENCY: + return "low-latency"; + case MC_CMD_GET_CAPABILITIES_OUT_RXDP_PACKED_STREAM: + return "packed-stream"; + case MC_CMD_GET_CAPABILITIES_OUT_TXDP_HIGH_PACKET_RATE: + return "high-tx-rate"; + case MC_CMD_GET_CAPABILITIES_OUT_RXDP_RULES_ENGINE: + return "rules-engine"; + case MC_CMD_GET_CAPABILITIES_OUT_RXDP_DPDK: + return "dpdk"; + default: + return "unknown"; + } +} + static int efx_ef10_init_datapath_caps(struct efx_nic *efx) { MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_CAPABILITIES_V7_OUT_LEN);
@@ -144,6 +164,13 @@ static int efx_ef10_init_datapath_caps(struct efx_nic *efx) nic_data->tx_dpcpu_fw_id = MCDI_WORD(outbuf, GET_CAPABILITIES_OUT_TX_DPCPU_FW_ID); + pci_info(efx->pci_dev, + "Datapath firmware variant: rx=%s (0x%x) tx=%s (0x%x)\n", + efx_ef10_dpcpu_fw_variant_name(nic_data->rx_dpcpu_fw_id), + nic_data->rx_dpcpu_fw_id, + efx_ef10_dpcpu_fw_variant_name(nic_data->tx_dpcpu_fw_id), + nic_data->tx_dpcpu_fw_id); + if (!(nic_data->datapath_caps & (1 << MC_CMD_GET_CAPABILITIES_OUT_RX_PREFIX_LEN_14_LBN))) { netif_err(efx, probe, efx->net_dev,
--
2.55.0