2 * include/asm-s390/timex.h
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
7 * Derived from "include/asm-i386/timex.h"
8 * Copyright (C) 1992, Linus Torvalds
11 #ifndef _ASM_S390_TIMEX_H
12 #define _ASM_S390_TIMEX_H
14 /* The value of the TOD clock for 1.1.1970. */
15 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
17 /* Inline functions for clock register access. */
18 static inline int set_clock(__u64 time
)
26 : "=d" (cc
) : "m" (time
), "a" (&time
) : "cc");
30 static inline int store_clock(__u64
*time
)
38 : "=d" (cc
), "=m" (*time
) : "a" (time
) : "cc");
42 static inline void set_clock_comparator(__u64 time
)
44 asm volatile("sckc 0(%1)" : : "m" (time
), "a" (&time
));
47 static inline void store_clock_comparator(__u64
*time
)
49 asm volatile("stckc 0(%1)" : "=m" (*time
) : "a" (time
));
52 #define CLOCK_TICK_RATE 1193180 /* Underlying HZ */
54 typedef unsigned long long cycles_t
;
56 static inline unsigned long long get_clock (void)
58 unsigned long long clk
;
60 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
61 asm volatile("stck %0" : "=Q" (clk
) : : "cc");
63 asm volatile("stck 0(%1)" : "=m" (clk
) : "a" (&clk
) : "cc");
68 static inline unsigned long long get_clock_xt(void)
70 unsigned char clk
[16];
72 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
73 asm volatile("stcke %0" : "=Q" (clk
) : : "cc");
75 asm volatile("stcke 0(%1)" : "=m" (clk
)
79 return *((unsigned long long *)&clk
[1]);
82 static inline cycles_t
get_cycles(void)
84 return (cycles_t
) get_clock() >> 2;
87 int get_sync_clock(unsigned long long *clock
);
88 void init_cpu_timer(void);
89 unsigned long long monotonic_clock(void);
91 extern u64 sched_clock_base_cc
;
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