diff options
Diffstat (limited to 'sys/dev/hyperv/utilities/hv_timesync.c')
| -rw-r--r-- | sys/dev/hyperv/utilities/hv_timesync.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/sys/dev/hyperv/utilities/hv_timesync.c b/sys/dev/hyperv/utilities/hv_timesync.c index 5bd51b0..4d166b0 100644 --- a/sys/dev/hyperv/utilities/hv_timesync.c +++ b/sys/dev/hyperv/utilities/hv_timesync.c @@ -46,10 +46,14 @@ __FBSDID("$FreeBSD$"); #define VMBUS_TIMESYNC_FWVER \ VMBUS_IC_VERSION(VMBUS_TIMESYNC_FWVER_MAJOR, 0) -#define VMBUS_TIMESYNC_MSGVER_MAJOR 3 +#define VMBUS_TIMESYNC_MSGVER_MAJOR 4 #define VMBUS_TIMESYNC_MSGVER \ VMBUS_IC_VERSION(VMBUS_TIMESYNC_MSGVER_MAJOR, 0) +#define VMBUS_TIMESYNC_DORTT(sc) \ + ((sc)->ic_msgver >= VMBUS_IC_VERSION(4, 0) && \ + (hyperv_features & CPUID_HV_MSR_TIME_REFCNT)) + static const struct vmbus_ic_desc vmbus_timesync_descs[] = { { .ic_guid = { .hv_guid = { @@ -81,12 +85,16 @@ SYSCTL_INT(_hw_hvtimesync, OID_AUTO, sample_verbose, CTLFLAG_RWTUN, &vmbus_ts_sample_verbose, 0, "Increase sample request verbosity."); static void -vmbus_timesync(struct hv_util_sc *sc, uint64_t hvtime, uint8_t tsflags) +vmbus_timesync(struct hv_util_sc *sc, uint64_t hvtime, uint64_t sent_tc, + uint8_t tsflags) { struct timespec vm_ts; - uint64_t hv_ns, vm_ns; + uint64_t hv_ns, vm_ns, rtt = 0; + + if (VMBUS_TIMESYNC_DORTT(sc)) + rtt = rdmsr(MSR_HV_TIME_REF_COUNT) - sent_tc; - hv_ns = (hvtime - VMBUS_ICMSG_TS_BASE) * VMBUS_ICMSG_TS_FACTOR; + hv_ns = (hvtime - VMBUS_ICMSG_TS_BASE + rtt) * HYPERV_TIMER_NS_FACTOR; nanotime(&vm_ts); vm_ns = (vm_ts.tv_sec * NANOSEC) + vm_ts.tv_nsec; @@ -174,6 +182,8 @@ vmbus_timesync_cb(struct vmbus_channel *chan, void *xsc) VMBUS_TIMESYNC_FWVER, VMBUS_TIMESYNC_MSGVER); if (error) return; + if (VMBUS_TIMESYNC_DORTT(sc)) + device_printf(sc->ic_dev, "RTT\n"); break; case VMBUS_ICMSG_TYPE_TIMESYNC: @@ -183,7 +193,8 @@ vmbus_timesync_cb(struct vmbus_channel *chan, void *xsc) return; } msg = data; - vmbus_timesync(sc, msg->ic_hvtime, msg->ic_tsflags); + vmbus_timesync(sc, msg->ic_hvtime, msg->ic_sent_tc, + msg->ic_tsflags); break; default: |
