1 /* SPDX-License-Identifier: GPL-2.0 */
6  *  Derived from "include/asm-i386/timex.h"
18 #define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
26 		__uint128_t tod : 64; /* bits 0-63 of tod clock */
31 		__uint128_t eitod : 72; /* epoch index + bits 0-63 tod clock */
35 		__uint128_t us	: 60; /* micro-seconds */
36 		__uint128_t sus	: 12; /* sub-microseconds */
48 		"   ipm   %0\n"  in set_tod_clock()
49 		"   srl   %0,28\n"  in set_tod_clock()
50 		: "=d" (cc) : "Q" (time) : "cc");  in set_tod_clock()
60 		"   ipm   %0\n"  in store_tod_clock_ext_cc()
61 		"   srl   %0,28\n"  in store_tod_clock_ext_cc()
62 		: "=d" (cc), "=Q" (*clk) : : "cc");  in store_tod_clock_ext_cc()
68 	asm volatile("stcke %0" : "=Q" (*tod) : : "cc");  in store_tod_clock_ext()
73 	asm volatile("sckc %0" : : "Q" (time));  in set_clock_comparator()
79 		"	lgr	0,%[val]\n"  in set_tod_programmable_field()
82 		: [val] "d" ((unsigned long)val)  in set_tod_programmable_field()
83 		: "0");  in set_tod_programmable_field()
93 #define PTFF_QAF	0x00	/* query available functions */
94 #define PTFF_QTO	0x01	/* query tod offset */
95 #define PTFF_QSI	0x02	/* query steering information */
96 #define PTFF_QUI	0x04	/* query UTC information */
97 #define PTFF_ATO	0x40	/* adjust tod offset */
98 #define PTFF_STO	0x41	/* set tod offset */
99 #define PTFF_SFS	0x42	/* set fine steering rate */
100 #define PTFF_SGS	0x43	/* set gross steering rate */
115 	return (*ptr & (0x80 >> (nr & 7))) != 0;  in ptff_query()
135  * ptff - Perform timing facility function
139  * Returns: Condition code (0 on success)
149 		"	lgr	0,%[reg0]\n"				\
154 		: [rc] "=&d" (rc), "+m" (*(struct addrtype *)reg1)	\
155 		: [reg0] "d" (reg0), [reg1] "d" (reg1)			\
156 		: "cc", "0", "1");					\
164 	old = get_lowcore()->clock_comparator;  in local_tick_disable()
165 	get_lowcore()->clock_comparator = clock_comparator_max;  in local_tick_disable()
166 	set_clock_comparator(get_lowcore()->clock_comparator);  in local_tick_disable()
172 	get_lowcore()->clock_comparator = comp;  in local_tick_enable()
173 	set_clock_comparator(get_lowcore()->clock_comparator);  in local_tick_enable()
192 	asm volatile("stckf %0" : "=Q" (clk) : : "cc");  in get_tod_clock_fast()
209 	return get_tod_clock() - tod_clock_base.tod;  in __get_tod_clock_monotonic()
213  * get_clock_monotonic - returns current time in clock rate units
230  * tod_to_ns - convert a TOD format value to nanoseconds
234  * Converting a 64 Bit TOD format value to nanoseconds means that the value
238  *    ns = (todval * 125) >> 9;
241  * With a split todval == 2^9 * th + tl (th upper 55 bits, tl lower 9 bits)
244  *    ns = ((2^9 * th + tl) * 125 ) >> 9;
245  * -> ns = (th * 125) + ((tl * 125) >> 9);
250 	return ((todval >> 9) * 125) + (((todval & 0x1ff) * 125) >> 9);  in tod_to_ns()
254  * tod_after - compare two 64 bit TOD values
255  * @a: first 64 bit TOD timestamp
258  * Returns: true if a is later than b
260 static inline int tod_after(unsigned long a, unsigned long b)  in tod_after()  argument
263 		return (long) a > (long) b;  in tod_after()
264 	return a > b;  in tod_after()
268  * tod_after_eq - compare two 64 bit TOD values
269  * @a: first 64 bit TOD timestamp
272  * Returns: true if a is later than b
274 static inline int tod_after_eq(unsigned long a, unsigned long b)  in tod_after_eq()  argument
277 		return (long) a >= (long) b;  in tod_after_eq()
278 	return a >= b;  in tod_after_eq()