sbi_bits.h 515 B

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  1. /*
  2. * SPDX-License-Identifier: BSD-2-Clause
  3. *
  4. * Copyright (c) 2019 Western Digital Corporation or its affiliates.
  5. *
  6. * Authors:
  7. * Anup Patel <anup.patel@wdc.com>
  8. */
  9. #ifndef __SBI_BITS_H__
  10. #define __SBI_BITS_H__
  11. #define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
  12. #define INSERT_FIELD(val, which, fieldval) \
  13. (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
  14. #define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
  15. #define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
  16. #endif