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/*-
* BSD LICENSE
*
* Copyright 2017 NXP.
*
* 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.
* * Neither the name of NXP nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DPAA_BITS_H
#define __DPAA_BITS_H
/* Bitfield stuff. */
#define BITS_PER_ULONG (sizeof(unsigned long) << 3)
#define SHIFT_PER_ULONG (((1 << 5) == BITS_PER_ULONG) ? 5 : 6)
#define BITS_MASK(idx) (1UL << ((idx) & (BITS_PER_ULONG - 1)))
#define BITS_IDX(idx) ((idx) >> SHIFT_PER_ULONG)
static inline void dpaa_set_bits(unsigned long mask,
volatile unsigned long *p)
{
*p |= mask;
}
static inline void dpaa_set_bit(int idx, volatile unsigned long *bits)
{
dpaa_set_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
}
static inline void dpaa_clear_bits(unsigned long mask,
volatile unsigned long *p)
{
*p &= ~mask;
}
static inline void dpaa_clear_bit(int idx,
volatile unsigned long *bits)
{
dpaa_clear_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
}
#endif /* __DPAA_BITS_H */
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