[mirror_ubuntu-artful-kernel.git] / drivers / staging / ccree / cc_bitops.h

/*
 * Copyright (C) 2012-2017 ARM Limited or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*!
 * \file cc_bitops.h
 * Bit fields operations macros.
 */
#ifndef _CC_BITOPS_H_
#define _CC_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)   do {    \
	word = ((word) & ~BITMASK_AT(bit_size, bit_offset)) |	    \
		(((new_val) & BITMASK(bit_size)) << (bit_offset));  \
} while (0)

#endif /*_CC_BITOPS_H_*/
Commit	Line	Data
abefd674 GBY	1	/*
abefd674 GBY	2	* Copyright (C) 2012-2017 ARM Limited or its affiliates.
c8f17865	3	*
abefd674 GBY	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
c8f17865	7	*
abefd674 GBY	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
c8f17865	12	*
abefd674 GBY	13	* You should have received a copy of the GNU General Public License
	14	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	15	*/
	16
	17	/*!
	18	* \file cc_bitops.h
	19	* Bit fields operations macros.
	20	*/
	21	#ifndef _CC_BITOPS_H_
	22	#define _CC_BITOPS_H_
	23
	24	#define BITMASK(mask_size) (((mask_size) < 32) ? \
	25	((1UL << (mask_size)) - 1) : 0xFFFFFFFFUL)
	26	#define BITMASK_AT(mask_size, mask_offset) (BITMASK(mask_size) << (mask_offset))
	27
	28	#define BITFIELD_GET(word, bit_offset, bit_size) \
	29	(((word) >> (bit_offset)) & BITMASK(bit_size))
	30	#define BITFIELD_SET(word, bit_offset, bit_size, new_val) do { \
	31	word = ((word) & ~BITMASK_AT(bit_size, bit_offset)) \| \
	32	(((new_val) & BITMASK(bit_size)) << (bit_offset)); \
	33	} while (0)
	34
abefd674	35	#endif /_CC_BITOPS_H_/