mirror of https://github.com/F-Stack/f-stack.git
40 lines
879 B
C
40 lines
879 B
C
/* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright 2017 NXP
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*
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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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