Commit e4101be5 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
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s390/time: introduce union tod_clock 



Introduce union tod_clock which is supposed to be used to decode and
access various fields of the result of STORE CLOCK EXTENDED.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 96c0a6a7

arch/s390/include/asm/timex.h

+19 −0
Original line number Diff line number Diff line
@@ -21,6 +21,25 @@ 


extern u64 clock_comparator_max;



union tod_clock {

	__uint128_t val;

	struct {

		__uint128_t ei	:  8; /* epoch index */

		__uint128_t tod : 64; /* bits 0-63 of tod clock */

		__uint128_t	: 40;

		__uint128_t pf	: 16; /* programmable field */

	};

	struct {

		__uint128_t eitod : 72; /* epoch index + bits 0-63 tod clock */

		__uint128_t	  : 56;

	};

	struct {

		__uint128_t us	: 60; /* micro-seconds */

		__uint128_t sus	: 12; /* sub-microseconds */

		__uint128_t	: 56;

	};

} __packed;



/* Inline functions for clock register access. */

static inline int set_tod_clock(__u64 time)

{