| Message ID | 20220124160107.1683901-6-kbusch@kernel.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | 64-bit data integrity field support | expand |
On Mon, Jan 24, 2022 at 5:01 PM Keith Busch <kbusch@kernel.org> wrote: > > The NVMe protocol extended data integrity fields with unaligned 48-bit > reference tags. Provide some helper accessors in preparation for these. > > Cc: Arnd Bergmann <arnd@arndb.de> > Signed-off-by: Keith Busch <kbusch@kernel.org> For asm-generic: Acked-by: Arnd Bergmann <arnd@arndb.de> I assume you are keeping this together with the rest of the series.
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 */
The NVMe protocol extended data integrity fields with unaligned 48-bit reference tags. Provide some helper accessors in preparation for these. Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Keith Busch <kbusch@kernel.org> --- include/asm-generic/unaligned.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)