bcm_utils.h revision d14abf155341d55053c76eeec58b787a456b753b
/*******************************************************************************
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
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* CDDL HEADER END
*
* Copyright 2014 QLogic Corporation
* The contents of this file are subject to the terms of the
* QLogic End User License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the License at
* http://www.qlogic.com/Resources/Documents/DriverDownloadHelp/
* QLogic_End_User_Software_License.txt
* See the License for the specific language governing permissions
* and limitations under the License.
*
*
* Module Description:
*
* History:
* 25/10/09 Shay Haroush Inception.
******************************************************************************/
#ifndef __bcm_utils_h__
#define __bcm_utils_h__
#include "bcmtype.h"
#include "utils.h"
#include "cyclic_oper.h"
/*
U64_LO
U64_HI
get 64 hi/lo value
*/
#define U64_LO(x) ((u32_t)(((u64_t)(x)) & (u64_t)0xffffffff))
#define U64_HI(x) ((u32_t)(((u64_t)(x)) >> 32))
#define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
#ifndef MAX_VARIABLE_VALUE
#define MAX_VARIABLE_VALUE(x) ((((u64_t)1) << (sizeof(x) * BITS_PER_BYTE)) -1)
#endif //MAX_VARIABLE_VALUE
/*
* Inlined SWAP functions to ensure arguments are never re-evaluated and remain
* atomic. For example, an argument passed in that is actually a de-reference
* to volatile memory would be de-referenced multiple times if these swap
* routines were macros.
*/
static __inline u16_t SWAP_BYTES16(u16_t val16)
{
return (((val16 & 0x00ff) << 8) |
((val16 & 0xff00) >> 8));
}
static __inline u32_t SWAP_BYTES32(u32_t val32)
{
return ((SWAP_BYTES16(val32 & 0x0000ffff) << 16) |
(SWAP_BYTES16((val32 & 0xffff0000) >> 16)));
}
static __inline u64_t SWAP_DWORDS(u64_t val)
{
return (((val & (u64_t)0x00000000ffffffffLL) << 32) |
((val & (u64_t)0xffffffff00000000LL) >> 32));
}
#endif /* __bcm_utils_h__ */