DPDK  22.11.0
rte_cycles.h
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1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2010-2014 Intel Corporation.
3  * Copyright(c) 2013 6WIND S.A.
4  */
5 
6 #ifndef _RTE_CYCLES_H_
7 #define _RTE_CYCLES_H_
8 
15 #include <stdint.h>
16 #include <rte_debug.h>
17 #include <rte_atomic.h>
18 
19 #define MS_PER_S 1000
20 #define US_PER_S 1000000
21 #define NS_PER_S 1000000000
22 
23 enum timer_source {
24  EAL_TIMER_TSC = 0,
25  EAL_TIMER_HPET
26 };
27 extern enum timer_source eal_timer_source;
28 
35 uint64_t
36 rte_get_tsc_hz(void);
37 
44 static inline uint64_t
45 rte_get_tsc_cycles(void);
46 
47 #ifdef RTE_LIBEAL_USE_HPET
48 
57 uint64_t
58 rte_get_hpet_cycles(void);
59 
66 uint64_t
67 rte_get_hpet_hz(void);
68 
82 int rte_eal_hpet_init(int make_default);
83 
84 #endif
85 
92 static inline uint64_t
94 {
95 #ifdef RTE_LIBEAL_USE_HPET
96  switch(eal_timer_source) {
97  case EAL_TIMER_TSC:
98 #endif
99  return rte_get_tsc_cycles();
100 #ifdef RTE_LIBEAL_USE_HPET
101  case EAL_TIMER_HPET:
102  return rte_get_hpet_cycles();
103  default: rte_panic("Invalid timer source specified\n");
104  }
105 #endif
106 }
107 
114 static inline uint64_t
116 {
117 #ifdef RTE_LIBEAL_USE_HPET
118  switch(eal_timer_source) {
119  case EAL_TIMER_TSC:
120 #endif
121  return rte_get_tsc_hz();
122 #ifdef RTE_LIBEAL_USE_HPET
123  case EAL_TIMER_HPET:
124  return rte_get_hpet_hz();
125  default: rte_panic("Invalid timer source specified\n");
126  }
127 #endif
128 }
137 extern void
138 (*rte_delay_us)(unsigned int us);
139 
146 static inline void
147 rte_delay_ms(unsigned ms)
148 {
149  rte_delay_us(ms * 1000);
150 }
151 
158 void rte_delay_us_block(unsigned int us);
159 
167 void rte_delay_us_sleep(unsigned int us);
168 
176 void rte_delay_us_callback_register(void(*userfunc)(unsigned int));
177 
178 #endif /* _RTE_CYCLES_H_ */
void rte_delay_us_block(unsigned int us)
void rte_delay_us_callback_register(void(*userfunc)(unsigned int))
static void rte_delay_ms(unsigned ms)
Definition: rte_cycles.h:147
static uint64_t rte_get_timer_hz(void)
Definition: rte_cycles.h:115
void(* rte_delay_us)(unsigned int us)
#define rte_panic(...)
Definition: rte_debug.h:43
static uint64_t rte_get_tsc_cycles(void)
void rte_delay_us_sleep(unsigned int us)
uint64_t rte_get_tsc_hz(void)
static uint64_t rte_get_timer_cycles(void)
Definition: rte_cycles.h:93