/*
* Read the current time from the clock chip and convert to UNIX form.
* Assumes that the year in the clock chip is valid.
* Must be called with tod_lock held.
*/
static timestruc_t
todbq4802_get(void)
{
timestruc_t ts;
todinfo_t tod;
struct rtc_t rtc;
ASSERT(MUTEX_HELD(&tod_lock));
read_rtc(&rtc);
DPRINTF("todbq4802_get: century=%d year=%d dom=%d hrs=%d min=%d"
" sec=%d\n", rtc.rtc_century, rtc.rtc_year, rtc.rtc_dom,
rtc.rtc_hrs, rtc.rtc_min, rtc.rtc_sec);
/*
* tod_year is base 1900 so this code needs to adjust the true
* year retrieved from the rtc's century and year fields.
*/
tod.tod_year = rtc.rtc_year + (rtc.rtc_century * 100) - 1900;
tod.tod_month = rtc.rtc_mon;
tod.tod_day = rtc.rtc_dom;
tod.tod_dow = rtc.rtc_dow;
tod.tod_hour = rtc.rtc_hrs;
tod.tod_min = rtc.rtc_min;
tod.tod_sec = rtc.rtc_sec;
ts.tv_sec = tod_to_utc(tod);
ts.tv_nsec = 0;
return (ts);
}
/*
* Read the current time from the clock chip and convert to UNIX form.
* Assumes that the year in the clock chip is valid.
* Must be called with tod_lock held.
*/
static timestruc_t
todm5819_get(void)
{
int i;
timestruc_t ts;
struct rtc_t rtc;
ASSERT(MUTEX_HELD(&tod_lock));
/*
* Read from the tod, and if it isnt accessible wait
* before retrying.
*/
for (i = 0; i < TODM5819_UIP_RETRY_THRESH; i++) {
if (read_rtc(&rtc))
break;
drv_usecwait(TODM5819_UIP_WAIT_USEC);
}
if (i == TODM5819_UIP_RETRY_THRESH) {
/*
* We couldnt read from the tod
*/
tod_fault_reset();
return (hrestime);
}
DPRINTF("todm5819_get: century=%d year=%d dom=%d hrs=%d\n",
rtc.rtc_century, rtc.rtc_year, rtc.rtc_dom, rtc.rtc_hrs);
ts.tv_sec = tod_to_utc(rtc_to_tod(&rtc));
ts.tv_nsec = 0;
return (ts);
}
/*
* Read the current time from the clock chip and convert to UNIX form.
* Assumes that the year in the clock chip is valid.
* Must be called with tod_lock held.
*/
static timestruc_t
todds_get(void)
{
timestruc_t ts;
todinfo_t tod;
struct rtc_t rtc;
ASSERT(MUTEX_HELD(&tod_lock));
read_rtc(&rtc);
DPRINTF("todds_get: century=%d year=%d dom=%d hrs=%d\n",
rtc.rtc_century, rtc.rtc_year, rtc.rtc_dom, rtc.rtc_hrs);
/*
* tod_year is base 1900 so this code needs to adjust the true
* year retrieved from the rtc's century and year fields.
*/
tod.tod_year = rtc.rtc_year + (rtc.rtc_century * 100) - 1900;
tod.tod_month = rtc.rtc_mon;
tod.tod_day = rtc.rtc_dom;
tod.tod_dow = rtc.rtc_dow;
tod.tod_hour = rtc.rtc_hrs;
tod.tod_min = rtc.rtc_min;
tod.tod_sec = rtc.rtc_sec;
ts.tv_sec = tod_to_utc(tod);
ts.tv_nsec = 0;
/* set the hw watchdog timer if it's been activated */
if (watchdog_activated) {
int ret = 0;
ret = tod_ops.tod_set_watchdog_timer(watchdog_timeout_seconds);
if (ret == 0)
cmn_err(CE_WARN, "ds1287: failed to set hardware "
"watchdog timer.");
}
return (ts);
}
static timestruc_t
todds1307_get(void)
{
timestruc_t ts;
todinfo_t tod;
struct rtc_t rtc;
ASSERT(MUTEX_HELD(&tod_lock));
if (sync_clock_once) {
todds1307_read_rtc(&soft_rtc);
sync_clock_once = 0;
} else {
tod_fault_reset();
return (hrestime);
}
bcopy(&soft_rtc, &rtc, sizeof (rtc));
/*
* 00 - 68 = 2000 thru 2068
* 69-99 = 1969 thru 1999
*/
tod.tod_year = rtc.rtc_year;
if (rtc.rtc_year <= 68)
tod.tod_year += 100;
tod.tod_month = rtc.rtc_mon;
tod.tod_day = rtc.rtc_dom;
tod.tod_dow = rtc.rtc_dow;
tod.tod_hour = rtc.rtc_hrs;
tod.tod_min = rtc.rtc_min;
tod.tod_sec = rtc.rtc_sec;
ts.tv_sec = tod_to_utc(tod);
ts.tv_nsec = 0;
return (ts);
}
static timestruc_t
todxen_get(tod_ops_t *top)
{
todinfo_t tod;
timestruc_t ts, wcts;
shared_info_t *si = HYPERVISOR_shared_info;
uint32_t xen_wc_version;
hrtime_t now;
ASSERT(MUTEX_HELD(&tod_lock));
/*
* Pick up the wallclock base time
*/
do {
xen_wc_version = si->wc_version;
membar_consumer();
wcts.tv_sec = si->wc_sec;
wcts.tv_nsec = si->wc_nsec;
membar_consumer();
} while ((si->wc_version & 1) | (xen_wc_version ^ si->wc_version));
/*
* Compute the TOD as the wallclock (boot) time plus time-since-boot
* (/not/ hrtime!) and normalize.
*/
now = xpv_getsystime() +
(hrtime_t)wcts.tv_nsec + (hrtime_t)wcts.tv_sec * NANOSEC;
ts.tv_sec = (time_t)(now / NANOSEC);
ts.tv_nsec = (long)(now % NANOSEC);
/*
* Apply GMT lag correction from /etc/rtc_config to get UTC time
*/
ts.tv_sec += ggmtl();
/*
* Validate the TOD in case of total insanity
*/
tod = utc_to_tod(ts.tv_sec);
if (tod.tod_year < 69) {
static int range_warn = 1; /* warn only once */
if (range_warn) {
/*
* If we're dom0, go invoke the underlying driver; the
* routine should complain if it discovers something
* wrong.
*/
if (DOMAIN_IS_INITDOMAIN(xen_info))
(void) TODOP_GET(top->tod_next);
/*
* Check the virtual hardware.
*/
if (tod.tod_year > 38)
cmn_err(CE_WARN,
"hypervisor wall clock is out "
"of range -- time needs to be reset");
range_warn = 0;
}
tod.tod_year += 100;
ts.tv_sec = tod_to_utc(tod);
}
return (ts);
}
