diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2002-08-05 22:12:33 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2002-08-05 22:12:33 +0000 |
| commit | 9a209f298d40e83d1c606f1556f90532071982f0 (patch) | |
| tree | 5d0638b70110c3d4c77feac092eb10c4f6353dfa /sys/dev | |
| parent | 50622bca403d54eaf50c5531d185ef9c45af8c6a (diff) | |
Force acceleration to be turned off if we encounter an old hardware
revision.
Jason and I think that only someone out of his mind would plug an old
dusty dual slot cgsix in an ultrra, but it's better to be safe anyways.
ok jason@
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/sbus/cgsix.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/sys/dev/sbus/cgsix.c b/sys/dev/sbus/cgsix.c index 20f54ae0766..01ce615c433 100644 --- a/sys/dev/sbus/cgsix.c +++ b/sys/dev/sbus/cgsix.c @@ -1,4 +1,4 @@ -/* $OpenBSD: cgsix.c,v 1.27 2002/08/02 16:13:07 millert Exp $ */ +/* $OpenBSD: cgsix.c,v 1.28 2002/08/05 22:12:32 miod Exp $ */ /* * Copyright (c) 2001 Jason L. Wright (jason@thought.net) @@ -87,7 +87,7 @@ void cgsix_loadcmap_immediate(struct cgsix_softc *, u_int, u_int); void cgsix_loadcmap_deferred(struct cgsix_softc *, u_int, u_int); void cgsix_setcolor(struct cgsix_softc *, u_int, u_int8_t, u_int8_t, u_int8_t); -void cgsix_reset(struct cgsix_softc *); +void cgsix_reset(struct cgsix_softc *, u_int32_t); void cgsix_hardreset(struct cgsix_softc *); void cgsix_burner(void *, u_int, u_int); int cgsix_intr(void *); @@ -143,6 +143,7 @@ cgsixattach(parent, self, aux) struct wsemuldisplaydev_attach_args waa; int console, i; long defattr; + u_int32_t fhc, rev; sc->sc_bustag = sa->sa_bustag; sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); @@ -209,7 +210,9 @@ cgsixattach(parent, self, aux) console = cgsix_is_console(sa->sa_node); - cgsix_reset(sc); + fhc = FHC_READ(sc); + rev = (fhc & FHC_REV_MASK) >> FHC_REV_SHIFT; + cgsix_reset(sc, rev); /* grab the current palette */ BT_WRITE(sc, BT_ADDR, 0); @@ -241,6 +244,15 @@ cgsixattach(parent, self, aux) a2int(getpropstring(optionsnode, "screen-#rows"), 34), a2int(getpropstring(optionsnode, "screen-#columns"), 80)); + /* + * Old rev. cg6 cards do not like the current acceleration code. + * + * Some hints from Sun point out at timing and cache problems, which + * will be investigated later. + */ + if (rev < 5) + sc->sc_dev.dv_cfdata->cf_flags &= ~CG6_CFFLAG_NOACCEL; + if ((sc->sc_dev.dv_cfdata->cf_flags & CG6_CFFLAG_NOACCEL) == 0) { sc->sc_rasops.ri_hw = sc; sc->sc_rasops.ri_ops.copyrows = cgsix_ras_copyrows; @@ -596,10 +608,11 @@ cgsix_setcolor(sc, index, r, g, b) } void -cgsix_reset(sc) +cgsix_reset(sc, fhcrev) struct cgsix_softc *sc; + u_int32_t fhcrev; { - u_int32_t fhc, rev; + u_int32_t fhc; /* hide the cursor, just in case */ THC_WRITE(sc, CG6_THC_CURSXY, THC_CURSOFF); @@ -608,18 +621,17 @@ cgsix_reset(sc) TEC_WRITE(sc, CG6_TEC_CLIP, 0); TEC_WRITE(sc, CG6_TEC_VDC, 0); - fhc = FHC_READ(sc); - rev = (fhc & FHC_REV_MASK) >> FHC_REV_SHIFT; /* take core of hardware bugs in old revisions */ - if (rev < 5) { + if (fhcrev < 5) { /* * Keep current resolution; set cpu to 68020, set test * window (size 1Kx1K), and for rev 1, disable dest cache. */ + fhc = FHC_READ(sc); fhc &= FHC_RES_MASK; fhc |= FHC_CPU_68020 | FHC_TEST | (11 << FHC_TESTX_SHIFT) | (11 << FHC_TESTY_SHIFT); - if (rev < 2) + if (fhcrev < 2) fhc |= FHC_DST_DISABLE; FHC_WRITE(sc, fhc); } |