1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef __ASM_VDSO_CSKY_GETTIMEOFDAY_H
4 #define __ASM_VDSO_CSKY_GETTIMEOFDAY_H
5
6 #ifndef __ASSEMBLY__
7
8 #include <asm/barrier.h>
9 #include <asm/unistd.h>
10 #include <abi/regdef.h>
11 #include <uapi/linux/time.h>
12
13 #define VDSO_HAS_CLOCK_GETRES 1
14
15 static __always_inline
16 int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
17 struct timezone *_tz)
18 {
19 register struct __kernel_old_timeval *tv asm("a0") = _tv;
20 register struct timezone *tz asm("a1") = _tz;
21 register long ret asm("a0");
22 register long nr asm(syscallid) = __NR_gettimeofday;
23
24 asm volatile ("trap 0\n"
25 : "=r" (ret)
26 : "r"(tv), "r"(tz), "r"(nr)
27 : "memory");
28
29 return ret;
30 }
31
32 static __always_inline
33 long clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
34 {
35 register clockid_t clkid asm("a0") = _clkid;
36 register struct __kernel_timespec *ts asm("a1") = _ts;
37 register long ret asm("a0");
38 register long nr asm(syscallid) = __NR_clock_gettime64;
39
40 asm volatile ("trap 0\n"
41 : "=r" (ret)
42 : "r"(clkid), "r"(ts), "r"(nr)
43 : "memory");
44
45 return ret;
46 }
47
48 static __always_inline
49 long clock_gettime32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
50 {
51 register clockid_t clkid asm("a0") = _clkid;
52 register struct old_timespec32 *ts asm("a1") = _ts;
53 register long ret asm("a0");
54 register long nr asm(syscallid) = __NR_clock_gettime;
55
56 asm volatile ("trap 0\n"
57 : "=r" (ret)
58 : "r"(clkid), "r"(ts), "r"(nr)
59 : "memory");
60
61 return ret;
62 }
63
64 static __always_inline
65 int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
66 {
67 register clockid_t clkid asm("a0") = _clkid;
68 register struct __kernel_timespec *ts asm("a1") = _ts;
69 register long ret asm("a0");
70 register long nr asm(syscallid) = __NR_clock_getres_time64;
71
72 asm volatile ("trap 0\n"
73 : "=r" (ret)
74 : "r"(clkid), "r"(ts), "r"(nr)
75 : "memory");
76
77 return ret;
78 }
79
80 static __always_inline
81 int clock_getres32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
82 {
83 register clockid_t clkid asm("a0") = _clkid;
84 register struct old_timespec32 *ts asm("a1") = _ts;
85 register long ret asm("a0");
86 register long nr asm(syscallid) = __NR_clock_getres;
87
88 asm volatile ("trap 0\n"
89 : "=r" (ret)
90 : "r"(clkid), "r"(ts), "r"(nr)
91 : "memory");
92
93 return ret;
94 }
95
96 uint64_t csky_pmu_read_cc(void);
97 static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
98 const struct vdso_data *vd)
99 {
100 #ifdef CONFIG_CSKY_PMU_V1
101 return csky_pmu_read_cc();
102 #else
103 return 0;
104 #endif
105 }
106
107 static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
108 {
109 return _vdso_data;
110 }
111
112 #endif /* !__ASSEMBLY__ */
113
114 #endif /* __ASM_VDSO_CSKY_GETTIMEOFDAY_H */
115
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