void
bwtwo_burner(void *v, u_int on, u_int flags)
{
struct bwtwo_softc *sc = v;
int s;
#if defined(SUN4)
if (CPU_ISSUN4 && (sc->sc_bustype == BUS_OBIO)) {
if (ISSET(sc->sc_sunfb.sf_flags, FB_PFOUR)) {
fb_pfour_burner(v, on, flags);
return;
}
if (on)
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
else
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
return;
}
#endif
s = splhigh();
if (on)
sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING;
else {
sc->sc_reg->fbc_ctrl &= ~FBC_VENAB;
if (flags & WSDISPLAY_BURN_VBLANK)
sc->sc_reg->fbc_ctrl &= ~FBC_TIMING;
}
splx(s);
}
/*
* Enable the cache.
* We need to clear out the valid bits first.
*/
void
sun4_cache_enable()
{
register u_int i, lim, ls, ts;
cache_alias_bits = CPU_ISSUN4
? CACHE_ALIAS_BITS_SUN4
: CACHE_ALIAS_BITS_SUN4C;
cache_alias_dist = CPU_ISSUN4
? CACHE_ALIAS_DIST_SUN4
: CACHE_ALIAS_DIST_SUN4C;
ls = CACHEINFO.c_linesize;
ts = CACHEINFO.c_totalsize;
for (i = AC_CACHETAGS, lim = i + ts; i < lim; i += ls)
sta(i, ASI_CONTROL, 0);
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_CACHE);
CACHEINFO.c_enabled = 1;
printf("cache enabled\n");
#ifdef notyet
if (cpuinfo.flags & SUN4_IOCACHE) {
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_IOCACHE);
printf("iocache enabled\n");
}
#endif
}
static void
bwtwo_set_video_sun4(struct bwtwo_softc *sc, int enable)
{
if (sc->sc_fb.fb_flags & FB_PFOUR) {
/*
* This handles the overlay plane case, too.
*/
fb_pfour_set_video(&sc->sc_fb, enable);
return;
}
if (enable)
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
else
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO);
return;
}
/*
* Enable the cache.
* We need to clear out the valid bits first.
*/
void
cache_enable()
{
register u_int i, lim, ls, ts;
ls = cacheinfo.c_linesize;
ts = cacheinfo.c_totalsize;
for (i = AC_CACHETAGS, lim = i + ts; i < lim; i += ls)
sta(i, ASI_CONTROL, 0);
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_CACHE);
cacheinfo.c_enabled = 1;
printf("%d byte (%d/line) write-through %cw flush cache enabled\n",
ts, ls, cacheinfo.c_hwflush ? 'h' : 's');
}
