| Message ID | 8-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com |
|---|---|
| State | New |
| Headers | show |
| Series | Introduce fwctl subystem | expand |
On Thu, Feb 27, 2025 at 08:26:36PM -0400, Jason Gunthorpe wrote: > From: Saeed Mahameed <saeedm@nvidia.com> > > If the device supports User Context then it can support fwctl. Create an > auxiliary device to allow fwctl to bind to it. > > Create a sysfs like: > > $ ls /sys/devices/pci0000:00/0000:00:0a.0/mlx5_core.fwctl.0/driver -l > lrwxrwxrwx 1 root root 0 Apr 25 19:46 /sys/devices/pci0000:00/0000:00:0a.0/mlx5_core.fwctl.0/driver -> ../../../../bus/auxiliary/drivers/mlx5_fwctl.mlx5_fwctl > > Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> > Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> > --- > drivers/net/ethernet/mellanox/mlx5/core/dev.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > Thanks, Acked-by: Leon Romanovsky <leonro@nvidia.com>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index 9a79674d27f15a..891bbbbfbbf1a4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c @@ -228,8 +228,15 @@ enum { MLX5_INTERFACE_PROTOCOL_VNET, MLX5_INTERFACE_PROTOCOL_DPLL, + MLX5_INTERFACE_PROTOCOL_FWCTL, }; +static bool is_fwctl_supported(struct mlx5_core_dev *dev) +{ + /* fwctl is most useful on PFs, prevent fwctl on SFs for now */ + return MLX5_CAP_GEN(dev, uctx_cap) && !mlx5_core_is_sf(dev); +} + static const struct mlx5_adev_device { const char *suffix; bool (*is_supported)(struct mlx5_core_dev *dev); @@ -252,6 +259,8 @@ static const struct mlx5_adev_device { .is_supported = &is_mp_supported }, [MLX5_INTERFACE_PROTOCOL_DPLL] = { .suffix = "dpll", .is_supported = &is_dpll_supported }, + [MLX5_INTERFACE_PROTOCOL_FWCTL] = { .suffix = "fwctl", + .is_supported = &is_fwctl_supported }, }; int mlx5_adev_idx_alloc(void)