osal_bitmap.h

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/*
 * Copyright (c) HiSilicon (Shanghai) Technologies Co., Ltd. 2021-2022. All rights reserved.
 * Description: OS Abstract Layer.
 */
 
#ifndef __OSAL_BITMAP_H__
#define __OSAL_BITMAP_H__
 
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif
#endif
 
#define OSAL_BITS_PER_BYTE 8
#define OSAL_BITS_PER_LONG (OSAL_BITS_PER_BYTE * sizeof(unsigned long))
#define OSAL_BIT_MASK(nr) (1UL << ((nr) % OSAL_BITS_PER_LONG))
#define OSAL_BIT_WORD(nr) ((nr) / OSAL_BITS_PER_LONG)
#define OSAL_BITS_TO_LONGS(nr) (((nr) + (OSAL_BITS_PER_LONG)-1) / (OSAL_BITS_PER_LONG))
#define OSAL_DECLARE_BITMAP(name, bits) unsigned long name[OSAL_BITS_TO_LONGS(bits)]
#define osal_for_each_set_bit(bit, addr, size)                               \
    for ((bit) = osal_bitmap_find_first_bit((addr), (size)); (bit) < (size); \
        (bit) = osal_bitmap_find_next_bit((addr), (size), (bit) + 1))
 
#define osal_for_each_clear_bit(bit, addr, size)                                  \
    for ((bit) = osal_bitmap_find_first_zero_bit((addr), (size)); (bit) < (size); \
        (bit) = osal_bitmap_find_next_zero_bit((addr), (size), (bit) + 1))
 
void osal_bitmap_set_bit(int nr, unsigned long *addr);
 
void osal_bitmap_clear_bit(int nr, unsigned long *addr);
 
void osal_bitmap_change_bit(int nr, unsigned long *addr);
 
int osal_bitmap_test_bit(int nr, unsigned long *addr);
 
int osal_bitmap_test_and_set_bit(int nr, unsigned long *addr);
 
int osal_bitmap_test_and_clear_bit(int nr, unsigned long *addr);
 
int osal_bitmap_test_and_change_bit(int nr, unsigned long *addr);
 
int osal_bitmap_find_first_zero_bit(const unsigned long *name, unsigned size);
 
int osal_bitmap_find_first_bit(const unsigned long *name, unsigned size);
 
int osal_bitmap_find_next_zero_bit(const unsigned long *name, int size, int offset);
 
int osal_bitmap_find_next_bit(const unsigned long *name, unsigned size, int offset);
 
#ifdef __cplusplus
#if __cplusplus
}
#endif
#endif
#endif /* __OSAL_BITMAP_H__ */