[PATCH net-next 1/2] mlxsw: spectrum: Expose KVD size for Spectrum-2

[Ido Schimmel]

From: Amit Cohen <am...@mellanox.com>

Unlike Spectrum-1, the KVD (Key-value database) of Spectrum-2 is not
partitioned, so only expose the entire KVD size. This enables users to
query the total size of the KVD.

Signed-off-by: Amit Cohen <am...@mellanox.com>
Acked-by: Jiri Pirko <j...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 .../net/ethernet/mellanox/mlxsw/spectrum.c    | 22 ++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index 650638152bbc..7e8a54068d92 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -5026,6 +5026,26 @@ static int mlxsw_sp1_resources_kvd_register(struct 
mlxsw_core *mlxsw_core)
        return 0;
 }
 
+static int mlxsw_sp2_resources_kvd_register(struct mlxsw_core *mlxsw_core)
+{
+       struct devlink *devlink = priv_to_devlink(mlxsw_core);
+       struct devlink_resource_size_params kvd_size_params;
+       u32 kvd_size;
+
+       if (!MLXSW_CORE_RES_VALID(mlxsw_core, KVD_SIZE))
+               return -EIO;
+
+       kvd_size = MLXSW_CORE_RES_GET(mlxsw_core, KVD_SIZE);
+       devlink_resource_size_params_init(&kvd_size_params, kvd_size, kvd_size,
+                                         MLXSW_SP_KVD_GRANULARITY,
+                                         DEVLINK_RESOURCE_UNIT_ENTRY);
+
+       return devlink_resource_register(devlink, MLXSW_SP_RESOURCE_NAME_KVD,
+                                        kvd_size, MLXSW_SP_RESOURCE_KVD,
+                                        DEVLINK_RESOURCE_ID_PARENT_TOP,
+                                        &kvd_size_params);
+}
+
 static int mlxsw_sp1_resources_register(struct mlxsw_core *mlxsw_core)
 {
        return mlxsw_sp1_resources_kvd_register(mlxsw_core);
@@ -5033,7 +5053,7 @@ static int mlxsw_sp1_resources_register(struct mlxsw_core 
*mlxsw_core)
 
 static int mlxsw_sp2_resources_register(struct mlxsw_core *mlxsw_core)
 {
-       return 0;
+       return mlxsw_sp2_resources_kvd_register(mlxsw_core);
 }
 
 static int mlxsw_sp_kvd_sizes_get(struct mlxsw_core *mlxsw_core,
-- 
2.21.0