mirror of https://github.com/F-Stack/f-stack.git
66 lines
2.4 KiB
C
66 lines
2.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2017 NXP.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of NXP nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __DPAA_BITS_H
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#define __DPAA_BITS_H
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/* Bitfield stuff. */
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#define BITS_PER_ULONG (sizeof(unsigned long) << 3)
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#define SHIFT_PER_ULONG (((1 << 5) == BITS_PER_ULONG) ? 5 : 6)
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#define BITS_MASK(idx) (1UL << ((idx) & (BITS_PER_ULONG - 1)))
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#define BITS_IDX(idx) ((idx) >> SHIFT_PER_ULONG)
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static inline void dpaa_set_bits(unsigned long mask,
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volatile unsigned long *p)
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{
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*p |= mask;
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}
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static inline void dpaa_set_bit(int idx, volatile unsigned long *bits)
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{
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dpaa_set_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
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}
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static inline void dpaa_clear_bits(unsigned long mask,
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volatile unsigned long *p)
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{
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*p &= ~mask;
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}
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static inline void dpaa_clear_bit(int idx,
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volatile unsigned long *bits)
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{
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dpaa_clear_bits(BITS_MASK(idx), bits + BITS_IDX(idx));
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}
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#endif /* __DPAA_BITS_H */
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