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Commit 94990b49 authored by Artemy Kovalyov's avatar Artemy Kovalyov Committed by Doug Ledford
Browse files

IB/mlx5: Add null_mkey access 



Add mlx5_cmd_null_mkey() function to access null_mkey information
from firmware.

Signed-off-by: default avatarArtemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent d9d0674c

drivers/infiniband/hw/mlx5/Makefile

+1 −1
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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

drivers/infiniband/hw/mlx5/cmd.c

0 → 100644
+48 −0
Original line number Diff line number Diff line 
/*

 * 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;

}

drivers/infiniband/hw/mlx5/cmd.h

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+40 −0
Original line number Diff line number Diff line 
/*

 * 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 */