// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2023, Ventana Micro Systems Inc., Andrew Jones */ #include void set_bit(int nr, volatile unsigned long *addr) { volatile unsigned long *word = addr + BIT_WORD(nr); unsigned long mask = BIT_MASK(nr); __sync_or_and_fetch(word, mask); } void clear_bit(int nr, volatile unsigned long *addr) { volatile unsigned long *word = addr + BIT_WORD(nr); unsigned long mask = BIT_MASK(nr); __sync_and_and_fetch(word, ~mask); } int test_bit(int nr, const volatile unsigned long *addr) { const volatile unsigned long *word = addr + BIT_WORD(nr); unsigned long mask = BIT_MASK(nr); return (*word & mask) != 0; } int test_and_set_bit(int nr, volatile unsigned long *addr) { volatile unsigned long *word = addr + BIT_WORD(nr); unsigned long mask = BIT_MASK(nr); unsigned long old = __sync_fetch_and_or(word, mask); return (old & mask) != 0; } int test_and_clear_bit(int nr, volatile unsigned long *addr) { volatile unsigned long *word = addr + BIT_WORD(nr); unsigned long mask = BIT_MASK(nr); unsigned long old = __sync_fetch_and_and(word, ~mask); return (old & mask) != 0; }