static int
rtc_attach(device_t dev)
{
struct timespec ts;
struct mc146818_softc *sc;
struct resource *res;
int error, rid;
sc = device_get_softc(dev);
bzero(sc, sizeof(struct mc146818_softc));
rid = 0;
res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
sc->sc_bst = rman_get_bustag(res);
sc->sc_bsh = rman_get_bushandle(res);
/* The TOD clock year 0 is 0. */
sc->sc_year0 = 0;
/* Use default register read/write and century get/set functions. */
sc->sc_flag = MC146818_NO_CENT_ADJUST;
if ((error = mc146818_attach(dev)) != 0) {
device_printf(dev, "cannot attach time of day clock\n");
return (error);
}
if (bootverbose) {
mc146818_gettime(dev, &ts);
device_printf(dev, "current time: %ld.%09ld\n", (long)ts.tv_sec,
ts.tv_nsec);
}
return (0);
}
static int
rtc_attach(device_t dev)
{
struct timespec ts;
struct mc146818_softc *sc;
struct resource *res;
int ebus, error, rid;
sc = device_get_softc(dev);
mtx_init(&sc->sc_mtx, "rtc_mtx", NULL, MTX_SPIN);
ebus = 0;
if (strcmp(device_get_name(device_get_parent(dev)), "ebus") == 0)
ebus = 1;
rid = 0;
res = bus_alloc_resource_any(dev, ebus ? SYS_RES_MEMORY :
SYS_RES_IOPORT, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(dev, "cannot allocate resources\n");
error = ENXIO;
goto fail_mtx;
}
sc->sc_bst = rman_get_bustag(res);
sc->sc_bsh = rman_get_bushandle(res);
sc->sc_mcread = RTC_READ;
sc->sc_mcwrite = RTC_WRITE;
/* The TOD clock year 0 is 0. */
sc->sc_year0 = 0;
/*
* For ISA use the default century get/set functions, for EBus we
* provide our own versions.
*/
sc->sc_flag = MC146818_NO_CENT_ADJUST;
if (ebus) {
/*
* Make sure the CR is at the default location (also used
* by Solaris).
*/
RTC_WRITE(dev, MC_REGA, PC87317_APC);
RTC_WRITE(dev, PC87317_APC_CADDR, PC87317_APC_CADDR_BANK1 |
PC87317_RTC_CR);
RTC_WRITE(dev, MC_REGA, PC87317_COMMON);
sc->sc_getcent = pc87317_getcent;
sc->sc_setcent = pc87317_setcent;
}
if ((error = mc146818_attach(dev)) != 0) {
device_printf(dev, "cannot attach time of day clock\n");
goto fail_res;
}
if (bootverbose) {
if (mc146818_gettime(dev, &ts) != 0)
device_printf(dev, "invalid time");
else
device_printf(dev, "current time: %ld.%09ld\n",
(long)ts.tv_sec, ts.tv_nsec);
}
return (0);
fail_res:
bus_release_resource(dev, ebus ? SYS_RES_MEMORY : SYS_RES_IOPORT, rid,
res);
fail_mtx:
mtx_destroy(&sc->sc_mtx);
return (error);
}
