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| author |   Edward Cree <ecree.xilinx@gmail.com> | 2022-07-20 19:29:26 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-07-22 12:50:06 +0100 |
| commit | 95287e1b4e5c656ad3abfbf27f0249792251dd9e (patch) | |
| tree | 23228db644623fe1fae90c8e40c2523c2cd68d08 /drivers/net/ethernet/sfc/ef100_nic.c | |
| parent | sfc: update EF100 register descriptions (diff) | |
| download | linux-dev-95287e1b4e5c656ad3abfbf27f0249792251dd9e.tar.xz linux-dev-95287e1b4e5c656ad3abfbf27f0249792251dd9e.zip | |
sfc: detect ef100 MAE admin privilege/capability at probe time
One PCIe function per network port (more precisely, per m-port group) is
responsible for configuring the Match-Action Engine which performs
switching and packet modification in the slice to support flower/OVS
offload. The GRP_MAE bit in the privilege mask indicates whether a
given function has this capability.
At probe time, call MCDIs to read the calling function's privilege mask,
and store the GRP_MAE bit in a new ef100_nic_data member.
Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sfc/ef100_nic.c')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef100_nic.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/ef100_nic.c b/drivers/net/ethernet/sfc/ef100_nic.c index f89e695cf8ac..4625d35269e6 100644 --- a/drivers/net/ethernet/sfc/ef100_nic.c +++ b/drivers/net/ethernet/sfc/ef100_nic.c @@ -946,6 +946,7 @@ static int ef100_probe_main(struct efx_nic *efx) unsigned int bar_size = resource_size(&efx->pci_dev->resource[efx->mem_bar]); struct ef100_nic_data *nic_data; char fw_version[32]; + u32 priv_mask = 0; int i, rc; if (WARN_ON(bar_size == 0)) @@ -1027,6 +1028,12 @@ static int ef100_probe_main(struct efx_nic *efx) efx_mcdi_print_fwver(efx, fw_version, sizeof(fw_version)); pci_dbg(efx->pci_dev, "Firmware version %s\n", fw_version); + rc = efx_mcdi_get_privilege_mask(efx, &priv_mask); + if (rc) /* non-fatal, and priv_mask will still be 0 */ + pci_info(efx->pci_dev, + "Failed to get privilege mask from FW, rc %d\n", rc); + nic_data->grp_mae = !!(priv_mask & MC_CMD_PRIVILEGE_MASK_IN_GRP_MAE); + if (compare_versions(fw_version, "1.1.0.1000") < 0) { pci_info(efx->pci_dev, "Firmware uses old event descriptors\n"); rc = -EINVAL; |