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/*******************************************************************
* (c) Copyright 2011-2012 Discretix Technologies Ltd. *
* This software is protected by copyright, international *
* treaties and patents, and distributed under multiple licenses. *
* Any use of this Software as part of the Discretix CryptoCell or *
* Packet Engine products requires a commercial license. *
* Copies of this Software that are distributed with the Discretix *
* CryptoCell or Packet Engine product drivers, may be used in *
* accordance with a commercial license, or at the user's option, *
* used and redistributed under the terms and conditions of the GNU *
* General Public License ("GPL") version 2, as published by the *
* Free Software Foundation. *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY LIABILITY AND WARRANTY; without even the implied *
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. *
* See the GNU General Public License version 2 for more details. *
* You should have received a copy of the GNU General Public *
* License version 2 along with this Software; if not, please write *
* to the Free Software Foundation, Inc., 59 Temple Place - Suite *
* 330, Boston, MA 02111-1307, USA. *
* Any copy or reproduction of this Software, as permitted under *
* the GNU General Public License version 2, must include this *
* Copyright Notice as well as any other notices provided under *
* the said license. *
********************************************************************/
/*!
* \file dx_bitops.h
* Bit fields operations macros.
*/
#ifndef _DX_BITOPS_H_
#define _DX_BITOPS_H_
#define BITMASK(mask_size) (((mask_size) < 32) ? \
((1UL << (mask_size)) - 1) : 0xFFFFFFFFUL)
#define BITMASK_AT(mask_size, mask_offset) (BITMASK(mask_size) << (mask_offset))
#define BITFIELD_GET(word, bit_offset, bit_size) \
(((word) >> (bit_offset)) & BITMASK(bit_size))
#define BITFIELD_SET(word, bit_offset, bit_size, new_val) \
(word = ((word) & ~BITMASK_AT(bit_size, bit_offset)) | \
(((new_val) & BITMASK(bit_size)) << (bit_offset)))
/* Is val aligned to "align" ("align" must be power of 2) */
#ifndef IS_ALIGNED
#define IS_ALIGNED(val, align) (((u32)(val) & ((align) - 1)) == 0)
#endif
#define SWAP_ENDIAN(word) \
(((word) >> 24) | (((word) & 0x00FF0000) >> 8) | \
(((word) & 0x0000FF00) << 8) | (((word) & 0x000000FF) << 24))
/* Is val a multiple of "mult" ("mult" must be power of 2) */
#define IS_MULT(val, mult) (((val) & ((mult) - 1)) == 0)
#define IS_NULL_ADDR(adr) (!(adr))
#endif /*_DX_BITOPS_H_*/
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