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| author |   Saeed Mahameed <saeedm@nvidia.com> | 2025-02-27 20:26:36 -0400 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2025-03-06 15:13:13 -0400 |
| commit | a1ded2c18b1f4c6d216178dfecf2278348e22a7c (patch) | |
| tree | 13de5e8c0818c0e7073fe5ca848e31b1ac0a0b51 | |
| parent | fwctl/mlx5: Support for communicating with mlx5 fw (diff) | |
| download | wireguard-linux-a1ded2c18b1f4c6d216178dfecf2278348e22a7c.tar.xz wireguard-linux-a1ded2c18b1f4c6d216178dfecf2278348e22a7c.zip | |
mlx5: Create an auxiliary device for fwctl_mlx5
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
Link: https://patch.msgid.link/r/8-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/dev.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c index 9a79674d27f1..891bbbbfbbf1 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) |