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On-board bwtwo diddles a system enable register bit for video, per Jason 

Thorpe (PR#1672).
This commit is contained in:
pk 1995-10-23 23:35:03 +00:00
parent f2345fb358
commit 7a9ddaff33
1 changed files with 34 additions and 7 deletions
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41
sys/arch/sparc/dev/bwtwo.c
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@ -1,4 +1,4 @@
/* $NetBSD: bwtwo.c,v 1.15 1995/10/09 15:39:34 pk Exp $ */
/* $NetBSD: bwtwo.c,v 1.16 1995/10/23 23:35:03 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -65,6 +65,8 @@
#include <machine/fbvar.h>
#if defined(SUN4)
#include <machine/eeprom.h>
#include <machine/ctlreg.h>
#include <sparc/sparc/asm.h>
#endif
#include <sparc/dev/bwtworeg.h>
@ -77,6 +79,7 @@ struct bwtwo_softc {
struct fbdevice sc_fb; /* frame buffer device */
volatile struct bwtworeg *sc_reg;/* control registers */
caddr_t sc_phys; /* display RAM (phys addr) */
int sc_bustype; /* type of bus we live on */
};
/* autoconfiguration driver */
@ -165,7 +168,7 @@ bwtwoattach(parent, self, args)
#endif
break;
}
sc->sc_bustype = ca->ca_bustype;
sc->sc_fb.fb_type.fb_depth = 1;
fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth,
@ -210,7 +213,13 @@ bwtwoattach(parent, self, args)
sc->sc_phys = p->ba_ram;
/* Insure video is enabled */
sc->sc_reg->bw_ctl |= CTL_VE;
#if defined(SUN4)
if ((cputyp == CPU_SUN4) && (sc->sc_bustype == BUS_OBIO))
stba(AC_SYSENABLE, ASI_CONTROL,
lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO);
else
#endif
sc->sc_reg->bw_ctl |= CTL_VE;
if (isconsole) {
printf(" (console)\n");
@ -271,14 +280,32 @@ bwtwoioctl(dev, cmd, data, flags, p)
break;
case FBIOGVIDEO:
*(int *)data = (sc->sc_reg->bw_ctl & CTL_VE) != 0;
#if defined(SUN4)
if ((cputyp == CPU_SUN4) && (sc->sc_bustype == BUS_OBIO))
*(int *)data =
(lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0;
else
#endif
*(int *)data = (sc->sc_reg->bw_ctl & CTL_VE) != 0;
break;
case FBIOSVIDEO:
if (*(int *)data)
sc->sc_reg->bw_ctl |= CTL_VE;
#if defined(SUN4)
if ((cputyp == CPU_SUN4) && (sc->sc_bustype == BUS_OBIO))
if (*(int *)data)
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);
else
sc->sc_reg->bw_ctl &= ~CTL_VE;
#endif
if (*(int *)data)
sc->sc_reg->bw_ctl |= CTL_VE;
else
sc->sc_reg->bw_ctl &= ~CTL_VE;
break;
default: