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net/mlx5: Expose vDPA emulation device capabilities 

Expose vDPA emulation device capabilities from the core layer.
It includes reading the capabilities from the firmware and exposing
helper functions to access the data.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Shahaf Shuler <shahafs@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
This commit is contained in:
Yishai Hadas 2019-12-12 13:09:25 +02:00 committed by Leon Romanovsky
parent 90fbca5952
commit ca1992c62c
2 changed files with 16 additions and 0 deletions
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7
drivers/net/ethernet/mellanox/mlx5/core/fw.c
View File

@ -245,6 +245,13 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
return err;
}
if (MLX5_CAP_GEN_64(dev, general_obj_types) &
MLX5_GENERAL_OBJ_TYPES_CAP_VIRTIO_NET_Q) {
err = mlx5_core_get_caps(dev, MLX5_CAP_VDPA_EMULATION);
if (err)
return err;
}
return 0;
}

9
include/linux/mlx5/device.h
View File

@ -1105,6 +1105,7 @@ enum mlx5_cap_type {
MLX5_CAP_DEV_MEM,
MLX5_CAP_RESERVED_16,
MLX5_CAP_TLS,
MLX5_CAP_VDPA_EMULATION = 0x13,
MLX5_CAP_DEV_EVENT = 0x14,
/* NUM OF CAP Types */
MLX5_CAP_NUM
@ -1297,6 +1298,14 @@ enum mlx5_qcam_feature_groups {
#define MLX5_CAP_DEV_EVENT(mdev, cap)\
MLX5_ADDR_OF(device_event_cap, (mdev)->caps.hca_cur[MLX5_CAP_DEV_EVENT], cap)
#define MLX5_CAP_DEV_VDPA_EMULATION(mdev, cap)\
MLX5_GET(device_virtio_emulation_cap, \
(mdev)->caps.hca_cur[MLX5_CAP_VDPA_EMULATION], cap)
#define MLX5_CAP64_DEV_VDPA_EMULATION(mdev, cap)\
MLX5_GET64(device_virtio_emulation_cap, \
(mdev)->caps.hca_cur[MLX5_CAP_VDPA_EMULATION], cap)
enum {
MLX5_CMD_STAT_OK = 0x0,
MLX5_CMD_STAT_INT_ERR = 0x1,