freebsd-dev/contrib/ofed/libmlx5/doorbell.h
Hans Petter Selasky d6b92ffa99 OFED user-space import and update for use with Linux-4.9 compatible RDMA
kernel APIs.

List of sources used:

1) rdma-core was cloned from "https://github.com/linux-rdma/rdma-core.git"
Top commit d65138ef93af30b3ea249f3a84aa6a24ba7f8a75

2) OpenSM was cloned from git://git.openfabrics.org/~halr/opensm.git
Top commit 85f841cf209f791c89a075048a907020e924528d

3) libibmad was cloned from "git://git.openfabrics.org/~iraweiny/libibmad.git"
Tag 1.3.13 with some additional patches from Mellanox.

4) infiniband-diags was cloned from "git://git.openfabrics.org/~iraweiny/infiniband-diags.git"
Tag 1.6.7 with some additional patches from Mellanox.

Added the required Makefiles for building and installing.

Sponsored by:	Mellanox Technologies
2017-08-02 16:00:30 +00:00

68 lines
2.2 KiB
C

/*
* Copyright (c) 2012 Mellanox Technologies, Inc. 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 DOORBELL_H
#define DOORBELL_H
#include <stdint.h>
#include "mlx5.h"
#if SIZEOF_LONG == 8
#if __BYTE_ORDER == __LITTLE_ENDIAN
# define MLX5_PAIR_TO_64(val) ((uint64_t) val[1] << 32 | val[0])
#elif __BYTE_ORDER == __BIG_ENDIAN
# define MLX5_PAIR_TO_64(val) ((uint64_t) val[0] << 32 | val[1])
#else
# error __BYTE_ORDER not defined
#endif
static inline void mlx5_write64(uint32_t val[2], void *dest, struct mlx5_spinlock *lock)
{
*(volatile uint64_t *)dest = MLX5_PAIR_TO_64(val);
}
#else
static inline void mlx5_write64(uint32_t val[2], void *dest, struct mlx5_spinlock *lock)
{
mlx5_spin_lock(lock);
*(volatile uint32_t *)dest = val[0];
*(volatile uint32_t *)(dest + 4) = val[1];
mlx5_spin_unlock(lock);
}
#endif
#endif /* DOORBELL_H */