diff options
author | Artemy Kovalyov <artemyko@mellanox.com> | 2017-01-18 17:58:09 +0300 |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2017-02-14 19:41:18 +0300 |
commit | 94990b498969b420949a04294618f9509466b896 (patch) | |
tree | 35e4b37ef31400b7991385635f0f1569b5e7f3c8 /drivers/infiniband/hw/mlx5/cmd.c | |
parent | d9d0674c0f8a950634fd2166a291e93e606a576c (diff) | |
download | linux-94990b498969b420949a04294618f9509466b896.tar.xz |
IB/mlx5: Add null_mkey access
Add mlx5_cmd_null_mkey() function to access null_mkey information
from firmware.
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/cmd.c')
-rw-r--r-- | drivers/infiniband/hw/mlx5/cmd.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/cmd.c b/drivers/infiniband/hw/mlx5/cmd.c new file mode 100644 index 000000000000..cdc2d3017da7 --- /dev/null +++ b/drivers/infiniband/hw/mlx5/cmd.c @@ -0,0 +1,48 @@ +/* + * Copyright (c) 2017, Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "cmd.h" + +int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey) +{ + u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {}; + u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {}; + int err; + + MLX5_SET(query_special_contexts_in, in, opcode, + MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS); + err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); + if (!err) + *null_mkey = MLX5_GET(query_special_contexts_out, out, + null_mkey); + return err; +} |