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net/mlx5: Expose vDPA emulation device capabilities

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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,