diff options
| author | Zong Li <[email protected]> | 2024-08-30 11:16:10 +0800 |
|---|---|---|
| committer | Anup Patel <[email protected]> | 2024-09-23 18:33:02 +0530 |
| commit | 570b9ae89a23ac80a21cd2240b0dd667246a2d4d (patch) | |
| tree | 14a934f6ce881f716a2ff0f19f0723428a9fa600 | |
| parent | 040fcf49ab9d428018eb3e04640df123594d2165 (diff) | |
include: sbi_bitops: add ULL version for BIT and GENMASK
Add BIT_ULL and GENMASK_ULL for dealing with 64-bits data on
32-bits CPU, then we don't need to separate the operation to
low part and high part. For instance, the MMIO register is
64 bits wide.
Signed-off-by: Zong Li <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
| -rw-r--r-- | include/sbi/sbi_bitops.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/sbi/sbi_bitops.h b/include/sbi/sbi_bitops.h index 7d90334d..3ddac777 100644 --- a/include/sbi/sbi_bitops.h +++ b/include/sbi/sbi_bitops.h @@ -14,6 +14,8 @@ #define BITS_PER_LONG (8 * __SIZEOF_LONG__) +#define BITS_PER_LONG_LONG 64 + #define EXTRACT_FIELD(val, which) \ (((val) & (which)) / ((which) & ~((which)-1))) #define INSERT_FIELD(val, which, fieldval) \ @@ -28,9 +30,13 @@ #define BIT_WORD_OFFSET(bit) ((bit) & (BITS_PER_LONG - 1)) #define BIT_ALIGN(bit, align) (((bit) + ((align) - 1)) & ~((align) - 1)) +#define BIT_ULL(nr) (1ULL << (nr)) + #define GENMASK(h, l) \ (((~0UL) - (1UL << (l)) + 1) & (~0UL >> (BITS_PER_LONG - 1 - (h)))) +#define GENMASK_ULL(h, l) \ + (((~0ULL) - (1ULL << (l)) + 1) & (~0ULL >> (BITS_PER_LONG_LONG - 1 - (h)))) /** * sbi_ffs - find first (less-significant) set bit in a long word. * @word: The word to search |