diff options
Diffstat (limited to 'sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c')
| -rw-r--r-- | sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c b/sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c index 9caed81..118178f 100644 --- a/sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c +++ b/sys/dev/hyperv/vmbus/amd64/hyperv_machdep.c @@ -118,8 +118,8 @@ hyperv_tsc_mmap(struct cdev *dev __unused, vm_ooffset_t offset, } #define HYPERV_TSC_TIMECOUNT(fence) \ -static u_int \ -hyperv_tsc_timecount_##fence(struct timecounter *tc) \ +static uint64_t \ +hyperv_tc64_tsc_##fence(void) \ { \ struct hyperv_reftsc *tsc_ref = hyperv_ref_tsc.tsc_ref; \ uint32_t seq; \ @@ -150,6 +150,13 @@ hyperv_tsc_timecount_##fence(struct timecounter *tc) \ /* Fallback to the generic timecounter, i.e. rdmsr. */ \ return (rdmsr(MSR_HV_TIME_REF_COUNT)); \ } \ + \ +static u_int \ +hyperv_tsc_timecount_##fence(struct timecounter *tc __unused) \ +{ \ + \ + return (hyperv_tc64_tsc_##fence()); \ +} \ struct __hack HYPERV_TSC_TIMECOUNT(lfence); @@ -158,6 +165,7 @@ HYPERV_TSC_TIMECOUNT(mfence); static void hyperv_tsc_tcinit(void *dummy __unused) { + hyperv_tc64_t tc64 = NULL; uint64_t val, orig; if ((hyperv_features & @@ -170,11 +178,13 @@ hyperv_tsc_tcinit(void *dummy __unused) case CPU_VENDOR_AMD: hyperv_tsc_timecounter.tc_get_timecount = hyperv_tsc_timecount_mfence; + tc64 = hyperv_tc64_tsc_mfence; break; case CPU_VENDOR_INTEL: hyperv_tsc_timecounter.tc_get_timecount = hyperv_tsc_timecount_lfence; + tc64 = hyperv_tc64_tsc_lfence; break; default: @@ -199,6 +209,10 @@ hyperv_tsc_tcinit(void *dummy __unused) /* Register "enlightened" timecounter. */ tc_init(&hyperv_tsc_timecounter); + /* Install 64 bits timecounter method for other modules to use. */ + KASSERT(tc64 != NULL, ("tc64 is not set")); + hyperv_tc64 = tc64; + /* Add device for mmap(2). */ make_dev(&hyperv_tsc_cdevsw, 0, UID_ROOT, GID_WHEEL, 0444, HYPERV_REFTSC_DEVNAME); |
