[PATCH mlx5-next 2/6] net/mlx5: Expose TLP emulation capabilities

[Leon Romanovsky <leon@kernel.org>]

From: Maher Sanalla <msanalla@nvidia.com>

Expose and query TLP device emulation caps on driver load.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fw.c   | 6 ++++++
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 1 +
 include/linux/mlx5/device.h                    | 9 +++++++++
 3 files changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fw.c b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
index eeb4437975f2..55249f405841 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fw.c
@@ -255,6 +255,12 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 			return err;
 	}
 
+	if (MLX5_CAP_GEN(dev, tlp_device_emulation_manager)) {
+		err = mlx5_core_get_caps_mode(dev, MLX5_CAP_TLP_EMULATION, HCA_CAP_OPMOD_GET_CUR);
+		if (err)
+			return err;
+	}
+
 	if (MLX5_CAP_GEN(dev, ipsec_offload)) {
 		err = mlx5_core_get_caps_mode(dev, MLX5_CAP_IPSEC, HCA_CAP_OPMOD_GET_CUR);
 		if (err)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index fdc3ba20912e..b0bc4a7d4a93 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1772,6 +1772,7 @@ static const int types[] = {
 	MLX5_CAP_CRYPTO,
 	MLX5_CAP_SHAMPO,
 	MLX5_CAP_ADV_RDMA,
+	MLX5_CAP_TLP_EMULATION,
 };
 
 static void mlx5_hca_caps_free(struct mlx5_core_dev *dev)
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h
index b37fe39cef27..25c6b42140b2 100644
--- a/include/linux/mlx5/device.h
+++ b/include/linux/mlx5/device.h
@@ -1259,6 +1259,7 @@ enum mlx5_cap_type {
 	MLX5_CAP_PORT_SELECTION = 0x25,
 	MLX5_CAP_ADV_VIRTUALIZATION = 0x26,
 	MLX5_CAP_ADV_RDMA = 0x28,
+	MLX5_CAP_TLP_EMULATION = 0x2a,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1481,6 +1482,14 @@ enum mlx5_qcam_feature_groups {
 	MLX5_GET64(virtio_emulation_cap, \
 		(mdev)->caps.hca[MLX5_CAP_VDPA_EMULATION]->cur, cap)
 
+#define MLX5_CAP_DEV_TLP_EMULATION(mdev, cap)\
+	MLX5_GET(tlp_dev_emu_capabilities, \
+		(mdev)->caps.hca[MLX5_CAP_TLP_EMULATION]->cur, cap)
+
+#define MLX5_CAP64_DEV_TLP_EMULATION(mdev, cap)\
+	MLX5_GET64(tlp_dev_emu_capabilities, \
+		(mdev)->caps.hca[MLX5_CAP_TLP_EMULATION]->cur, cap)
+
 #define MLX5_CAP_IPSEC(mdev, cap)\
 	MLX5_GET(ipsec_cap, (mdev)->caps.hca[MLX5_CAP_IPSEC]->cur, cap)
 

-- 
2.53.0