iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

IB/mlx5: Add null_mkey access

Browse Source 
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>
This commit is contained in:
Artemy Kovalyov 2017-01-18 16:58:09 +02:00 committed by Doug Ledford
parent d9d0674c0f
commit 94990b4989
3 changed files with 89 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/infiniband/hw/mlx5/Makefile
View File

@ -1,4 +1,4 @@
obj-$(CONFIG_MLX5_INFINIBAND) += mlx5_ib.o
mlx5_ib-y := main.o cq.o doorbell.o qp.o mem.o srq.o mr.o ah.o mad.o gsi.o ib_virt.o
mlx5_ib-y := main.o cq.o doorbell.o qp.o mem.o srq.o mr.o ah.o mad.o gsi.o ib_virt.o cmd.o
mlx5_ib-$(CONFIG_INFINIBAND_ON_DEMAND_PAGING) += odp.o

48
drivers/infiniband/hw/mlx5/cmd.c Normal file
View File

@ -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;
}

40
drivers/infiniband/hw/mlx5/cmd.h Normal file
View File

@ -0,0 +1,40 @@
/*
* 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.
*/
#ifndef MLX5_IB_CMD_H
#define MLX5_IB_CMD_H
#include <linux/kernel.h>
#include <linux/mlx5/driver.h>
int mlx5_cmd_null_mkey(struct mlx5_core_dev *dev, u32 *null_mkey);
#endif /* MLX5_IB_CMD_H */