mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-22 11:17:19 +00:00
d6b92ffa99
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
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
|
|
* Copyright (c) 2000, 2011 Mellanox Technology 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 BITMAP_H
|
|
#define BITMAP_H
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <pthread.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <sys/ipc.h>
|
|
#include <sys/shm.h>
|
|
#include <sys/mman.h>
|
|
#include <errno.h>
|
|
#include "mlx5.h"
|
|
|
|
/* Only ia64 requires this */
|
|
#ifdef __ia64__
|
|
#define MLX5_SHM_ADDR ((void *)0x8000000000000000UL)
|
|
#define MLX5_SHMAT_FLAGS (SHM_RND)
|
|
#else
|
|
#define MLX5_SHM_ADDR NULL
|
|
#define MLX5_SHMAT_FLAGS 0
|
|
#endif
|
|
|
|
#define BITS_PER_LONG (8 * sizeof(long))
|
|
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_LONG)
|
|
|
|
#ifndef HPAGE_SIZE
|
|
#define HPAGE_SIZE (2UL * 1024 * 1024)
|
|
#endif
|
|
|
|
#define MLX5_SHM_LENGTH HPAGE_SIZE
|
|
#define MLX5_Q_CHUNK_SIZE 32768
|
|
#define MLX5_SHM_NUM_REGION 64
|
|
|
|
static inline unsigned long mlx5_ffz(uint32_t word)
|
|
{
|
|
return __builtin_ffs(~word) - 1;
|
|
}
|
|
|
|
static inline uint32_t mlx5_find_first_zero_bit(const unsigned long *addr,
|
|
uint32_t size)
|
|
{
|
|
const unsigned long *p = addr;
|
|
uint32_t result = 0;
|
|
unsigned long tmp;
|
|
|
|
while (size & ~(BITS_PER_LONG - 1)) {
|
|
tmp = *(p++);
|
|
if (~tmp)
|
|
goto found;
|
|
result += BITS_PER_LONG;
|
|
size -= BITS_PER_LONG;
|
|
}
|
|
if (!size)
|
|
return result;
|
|
|
|
tmp = (*p) | (~0UL << size);
|
|
if (tmp == (uint32_t)~0UL) /* Are any bits zero? */
|
|
return result + size; /* Nope. */
|
|
found:
|
|
return result + mlx5_ffz(tmp);
|
|
}
|
|
|
|
static inline void mlx5_set_bit(unsigned int nr, unsigned long *addr)
|
|
{
|
|
addr[(nr / BITS_PER_LONG)] |= (1 << (nr % BITS_PER_LONG));
|
|
}
|
|
|
|
static inline void mlx5_clear_bit(unsigned int nr, unsigned long *addr)
|
|
{
|
|
addr[(nr / BITS_PER_LONG)] &= ~(1 << (nr % BITS_PER_LONG));
|
|
}
|
|
|
|
static inline int mlx5_test_bit(unsigned int nr, const unsigned long *addr)
|
|
{
|
|
return !!(addr[(nr / BITS_PER_LONG)] & (1 << (nr % BITS_PER_LONG)));
|
|
}
|
|
|
|
#endif
|