static int
nexus_gettime(device_t dev, struct timespec *ts)
{
struct clocktime ct;
struct efi_tm tm;
efi_get_time(&tm);
/*
* This code was written in 2005, so logically EFI cannot return
* a year smaller than that. Assume the EFI clock is out of whack
* in that case and reset the EFI clock.
*/
if (tm.tm_year < 2005)
return (EINVAL);
ct.nsec = tm.tm_nsec;
ct.sec = tm.tm_sec;
ct.min = tm.tm_min;
ct.hour = tm.tm_hour;
ct.day = tm.tm_mday;
ct.mon = tm.tm_mon;
ct.year = tm.tm_year;
ct.dow = -1;
return (clock_ct_to_ts(&ct, ts));
}
/* not static: needed by APM */
unsigned long get_cmos_time(void)
{
unsigned long retval;
spin_lock(&rtc_lock);
if (efi_enabled)
retval = efi_get_time();
else
retval = mach_get_cmos_time();
spin_unlock(&rtc_lock);
return retval;
}
/* not static: needed by APM */
unsigned long get_cmos_time(void)
{
unsigned long retval;
unsigned long flags;
spin_lock_irqsave(&rtc_lock, flags);
if (use_kvm_time)
retval = kvm_get_wallclock();
else if (efi_enabled)
retval = efi_get_time();
else
retval = mach_get_cmos_time();
spin_unlock_irqrestore(&rtc_lock, flags);
return retval;
}
/* XXX debug stuff */
static int
efi_time_sysctl_handler(SYSCTL_HANDLER_ARGS)
{
struct efi_tm tm;
int error, val;
val = 0;
error = sysctl_handle_int(oidp, &val, 0, req);
if (error != 0 || req->newptr == NULL)
return (error);
error = efi_get_time(&tm);
if (error == 0) {
uprintf("EFI reports: Year %d Month %d Day %d Hour %d Min %d "
"Sec %d\n", tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour,
tm.tm_min, tm.tm_sec);
}
return (error);
}
static int
nexus_settime(device_t dev, struct timespec *ts)
{
struct clocktime ct;
struct efi_tm tm;
efi_get_time(&tm);
clock_ts_to_ct(ts, &ct);
tm.tm_nsec = ts->tv_nsec;
tm.tm_sec = ct.sec;
tm.tm_min = ct.min;
tm.tm_hour = ct.hour;
tm.tm_year = ct.year;
tm.tm_mon = ct.mon;
tm.tm_mday = ct.day;
return (efi_set_time(&tm));
}
static int
efirtc_probe(device_t dev)
{
struct efi_tm tm;
int error;
/*
* Check whether we can read the time. This will stop us from attaching
* when there is EFI Runtime support but the gettime function is
* unimplemented, e.g. on some builds of U-Boot.
*/
if ((error = efi_get_time(&tm)) != 0) {
if (bootverbose)
device_printf(dev, "cannot read EFI realtime clock\n");
return (error);
}
device_set_desc(dev, "EFI Realtime Clock");
return (BUS_PROBE_DEFAULT);
}
static int
efirtc_gettime(device_t dev, struct timespec *ts)
{
struct clocktime ct;
struct efi_tm tm;
int error;
error = efi_get_time(&tm);
if (error != 0)
return (error);
ct.sec = tm.tm_sec;
ct.min = tm.tm_min;
ct.hour = tm.tm_hour;
ct.day = tm.tm_mday;
ct.mon = tm.tm_mon;
ct.year = tm.tm_year;
ct.nsec = tm.tm_nsec;
clock_dbgprint_ct(dev, CLOCK_DBG_READ, &ct);
return (clock_ct_to_ts(&ct, ts));
}
static int
efidev_ioctl(struct dev_ioctl_args *ap)
{
u_long cmd = ap->a_cmd;
caddr_t addr = ap->a_data;
int error;
switch (cmd) {
case EFIIOC_GET_TABLE:
{
struct efi_get_table_ioc *egtioc =
(struct efi_get_table_ioc *)addr;
error = efi_get_table(&egtioc->uuid, &egtioc->ptr);
break;
}
case EFIIOC_GET_TIME:
{
struct efi_tm *tm = (struct efi_tm *)addr;
error = efi_get_time(tm);
break;
}
case EFIIOC_SET_TIME:
{
struct efi_tm *tm = (struct efi_tm *)addr;
error = efi_set_time(tm);
break;
}
case EFIIOC_VAR_GET:
{
struct efi_var_ioc *ev = (struct efi_var_ioc *)addr;
void *data;
efi_char *name;
data = kmalloc(ev->datasize, M_TEMP, M_WAITOK);
name = kmalloc(ev->namesize, M_TEMP, M_WAITOK);
error = copyin(ev->name, name, ev->namesize);
if (error)
goto vg_out;
if (name[ev->namesize / sizeof(efi_char) - 1] != 0) {
error = EINVAL;
goto vg_out;
}
error = efi_var_get(name, &ev->vendor, &ev->attrib,
&ev->datasize, data);
if (error == 0) {
error = copyout(data, ev->data, ev->datasize);
} else if (error == EOVERFLOW) {
/*
* Pass back the size we really need, but
* convert the error to 0 so the copyout
* happens. datasize was updated in the
* efi_var_get call.
*/
ev->data = NULL;
error = 0;
}
vg_out:
kfree(data, M_TEMP);
kfree(name, M_TEMP);
break;
}
case EFIIOC_VAR_NEXT:
{
struct efi_var_ioc *ev = (struct efi_var_ioc *)addr;
efi_char *name;
name = kmalloc(ev->namesize, M_TEMP, M_WAITOK);
error = copyin(ev->name, name, ev->namesize);
if (error)
goto vn_out;
/* Note: namesize is the buffer size, not the string lenght */
error = efi_var_nextname(&ev->namesize, name, &ev->vendor);
if (error == 0) {
error = copyout(name, ev->name, ev->namesize);
} else if (error == EOVERFLOW) {
ev->name = NULL;
error = 0;
}
vn_out:
kfree(name, M_TEMP);
break;
}
case EFIIOC_VAR_SET:
{
struct efi_var_ioc *ev = (struct efi_var_ioc *)addr;
void *data = NULL;
efi_char *name;
/* datasize == 0 -> delete (more or less) */
if (ev->datasize > 0)
data = kmalloc(ev->datasize, M_TEMP, M_WAITOK);
name = kmalloc(ev->namesize, M_TEMP, M_WAITOK);
if (ev->datasize) {
error = copyin(ev->data, data, ev->datasize);
if (error)
goto vs_out;
}
error = copyin(ev->name, name, ev->namesize);
if (error)
goto vs_out;
if (name[ev->namesize / sizeof(efi_char) - 1] != 0) {
error = EINVAL;
goto vs_out;
}
error = efi_var_set(name, &ev->vendor, ev->attrib, ev->datasize,
data);
vs_out:
kfree(data, M_TEMP);
kfree(name, M_TEMP);
break;
}
default:
error = ENOTTY;
break;
}
return (error);
}
