diff mbox series

include: sbi_bitops: add ULL version for BIT and GENMASK

Message ID 20240830031610.32730-1-zong.li@sifive.com
State New
Headers show
Series include: sbi_bitops: add ULL version for BIT and GENMASK | expand

Commit Message

Zong Li Aug. 30, 2024, 3:16 a.m. UTC 
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 <zong.li@sifive.com>
---
 include/sbi/sbi_bitops.h | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/include/sbi/sbi_bitops.h b/include/sbi/sbi_bitops.h
index 7d90334..3ddac77 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