diff options
| author | Keith Busch <[email protected]> | 2022-03-03 12:13:07 -0800 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2022-03-07 12:48:35 -0700 |
| commit | c2ea5fcf53d5f21e6aff0de11d55bc202822df6a (patch) | |
| tree | 8e4ac5183f351f71f4897a2ec06c4df224c6dd6d | |
| parent | 84b735429f5fe6f57fc0b3fff3932dce1471e668 (diff) | |
asm-generic: introduce be48 unaligned accessors
The NVMe protocol extended the data integrity fields with unaligned
48-bit reference tags. Provide some helper accessors in
preparation for these.
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Martin K. Petersen <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
Reviewed-by: Chaitanya Kulkarni <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
| -rw-r--r-- | include/asm-generic/unaligned.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h index 1c4242416c9f..8fc637379899 100644 --- a/include/asm-generic/unaligned.h +++ b/include/asm-generic/unaligned.h @@ -126,4 +126,30 @@ static inline void put_unaligned_le24(const u32 val, void *p) __put_unaligned_le24(val, p); } +static inline void __put_unaligned_be48(const u64 val, __u8 *p) +{ + *p++ = val >> 40; + *p++ = val >> 32; + *p++ = val >> 24; + *p++ = val >> 16; + *p++ = val >> 8; + *p++ = val; +} + +static inline void put_unaligned_be48(const u64 val, void *p) +{ + __put_unaligned_be48(val, p); +} + +static inline u64 __get_unaligned_be48(const u8 *p) +{ + return (u64)p[0] << 40 | (u64)p[1] << 32 | p[2] << 24 | + p[3] << 16 | p[4] << 8 | p[5]; +} + +static inline u64 get_unaligned_be48(const void *p) +{ + return __get_unaligned_be48(p); +} + #endif /* __ASM_GENERIC_UNALIGNED_H */ |