diff options
| author | sephe <sephe@FreeBSD.org> | 2017-01-04 01:58:38 +0000 |
|---|---|---|
| committer | sephe <sephe@FreeBSD.org> | 2017-01-04 01:58:38 +0000 |
| commit | 923185c1556e28efc10e1d35ad9c829c7bf02ab1 (patch) | |
| tree | 8c9b642ae9f21a497a9d336ff2fb7a53c12085b2 /sys/dev/hyperv/include | |
| parent | f62d0b4bab6ac849b8f3d48130c5efc979c42b61 (diff) | |
| download | FreeBSD-src-923185c1556e28efc10e1d35ad9c829c7bf02ab1.zip FreeBSD-src-923185c1556e28efc10e1d35ad9c829c7bf02ab1.tar.gz | |
MFC 310048,310101
310048
hyperv: Implement "enlightened" time counter, which is rdtsc based.
Reviewed by: kib
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8763
310101
hyperv: Allow userland to ro-mmap reference TSC page
This paves way to implement VDSO for the enlightened time counter.
Reviewed by: kib
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8768
Diffstat (limited to 'sys/dev/hyperv/include')
| -rw-r--r-- | sys/dev/hyperv/include/hyperv.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/sys/dev/hyperv/include/hyperv.h b/sys/dev/hyperv/include/hyperv.h index c5e7dec..0eda9f0 100644 --- a/sys/dev/hyperv/include/hyperv.h +++ b/sys/dev/hyperv/include/hyperv.h @@ -31,10 +31,10 @@ #ifndef _HYPERV_H_ #define _HYPERV_H_ -#include <sys/param.h> +#ifdef _KERNEL -#include <vm/vm.h> -#include <vm/pmap.h> +#include <sys/param.h> +#include <sys/systm.h> #define MSR_HV_TIME_REF_COUNT 0x40000020 @@ -45,6 +45,7 @@ #define CPUID_HV_MSR_HYPERCALL 0x0020 /* MSR_HV_GUEST_OS_ID * MSR_HV_HYPERCALL */ #define CPUID_HV_MSR_VP_INDEX 0x0040 /* MSR_HV_VP_INDEX */ +#define CPUID_HV_MSR_REFERENCE_TSC 0x0200 /* MSR_HV_REFERENCE_TSC */ #define CPUID_HV_MSR_GUEST_IDLE 0x0400 /* MSR_HV_GUEST_IDLE */ #ifndef NANOSEC @@ -53,14 +54,35 @@ #define HYPERV_TIMER_NS_FACTOR 100ULL #define HYPERV_TIMER_FREQ (NANOSEC / HYPERV_TIMER_NS_FACTOR) +#endif /* _KERNEL */ + +#define HYPERV_REFTSC_DEVNAME "hv_tsc" + +/* + * Hyper-V Reference TSC + */ +struct hyperv_reftsc { + volatile uint32_t tsc_seq; + volatile uint32_t tsc_rsvd1; + volatile uint64_t tsc_scale; + volatile int64_t tsc_ofs; +} __packed __aligned(PAGE_SIZE); +#ifdef CTASSERT +CTASSERT(sizeof(struct hyperv_reftsc) == PAGE_SIZE); +#endif + +#ifdef _KERNEL + struct hyperv_guid { - uint8_t hv_guid[16]; + uint8_t hv_guid[16]; } __packed; -#define HYPERV_GUID_STRLEN 40 +#define HYPERV_GUID_STRLEN 40 int hyperv_guid2str(const struct hyperv_guid *, char *, size_t); extern u_int hyperv_features; /* CPUID_HV_MSR_ */ +#endif /* _KERNEL */ + #endif /* _HYPERV_H_ */ |
