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/* $OpenBSD: grf_iv.c,v 1.23 2005/07/23 23:28:58 martin Exp $ */
/* $NetBSD: grf_iv.c,v 1.17 1997/02/20 00:23:27 scottr Exp $ */
/*
* Copyright (c) 1995 Allen Briggs. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Allen Briggs.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Graphics display driver for the Macintosh internal video for machines
* that don't map it into a fake nubus card.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/malloc.h>
#include <sys/mman.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/cpu.h>
#include <machine/grfioctl.h>
#include <machine/viareg.h>
#include "nubus.h"
#include "obiovar.h"
#include "grfvar.h"
extern u_int32_t mac68k_vidlog;
extern u_int32_t mac68k_vidphys;
extern long videorowbytes;
extern long videobitdepth;
extern unsigned long videosize;
static int grfiv_mode(struct grf_softc *gp, int cmd, void *arg);
static caddr_t grfiv_phys(struct grf_softc *gp, vaddr_t addr);
static int grfiv_match(struct device *, void *, void *);
static void grfiv_attach(struct device *, struct device *, void *);
struct cfdriver intvid_cd = {
NULL, "intvid", DV_DULL
};
struct cfattach intvid_ca = {
sizeof(struct grfbus_softc), grfiv_match, grfiv_attach
};
#define QUADRA_DAFB_BASE 0xF9800000
static int
grfiv_match(parent, vcf, aux)
struct device *parent;
void *vcf;
void *aux;
{
struct obio_attach_args *oa = (struct obio_attach_args *) aux;
bus_space_handle_t bsh;
int found, sense;
found = 1;
switch (current_mac_model->class) {
case MACH_CLASSQ:
case MACH_CLASSQ2:
/*
* Assume DAFB for all of these, unless we can't
* access the memory.
*/
if (bus_space_map(oa->oa_tag, QUADRA_DAFB_BASE, PAGE_SIZE,
0, &bsh)) {
panic("failed to map space for DAFB regs.");
}
if (mac68k_bus_space_probe(oa->oa_tag, bsh, 0x1C, 4) == 0) {
bus_space_unmap(oa->oa_tag, bsh, PAGE_SIZE);
found = 0;
goto nodafb;
}
sense = (bus_space_read_4(oa->oa_tag, bsh, 0x1C) & 7);
#if 0 /* when using a non-Apple monitor with an adapter, sense is zero */
if (sense == 0)
found = 0;
#endif
/* Set "Turbo SCSI" configuration to default */
bus_space_write_4(oa->oa_tag, bsh, 0x24, 0x1d1); /* ch0 */
bus_space_write_4(oa->oa_tag, bsh, 0x28, 0x1d1); /* ch1 */
/* Disable interrupts */
bus_space_write_4(oa->oa_tag, bsh, 0x104, 0);
/* Clear any interrupts */
bus_space_write_4(oa->oa_tag, bsh, 0x10C, 0);
bus_space_write_4(oa->oa_tag, bsh, 0x110, 0);
bus_space_write_4(oa->oa_tag, bsh, 0x114, 0);
bus_space_unmap(oa->oa_tag, bsh, PAGE_SIZE);
break;
default:
nodafb:
if (mac68k_vidlog == 0) {
found = 0;
}
break;
}
return found;
}
#define R4(sc, o) (bus_space_read_4((sc)->sc_tag, (sc)->sc_regh, o) & 0xfff)
static void
grfiv_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct obio_attach_args *oa = (struct obio_attach_args *) aux;
struct grfbus_softc *sc;
struct grfmode *gm;
sc = (struct grfbus_softc *) self;
sc->card_id = 0;
switch (current_mac_model->class) {
case MACH_CLASSQ:
case MACH_CLASSQ2:
sc->sc_tag = oa->oa_tag;
if (bus_space_map(sc->sc_tag, QUADRA_DAFB_BASE, 0x20,
0, &sc->sc_regh)) {
panic("failed to map space for DAFB regs.");
}
printf(": DAFB: Monitor sense %x.\n", R4(sc,0x1C)&7);
break;
default:
printf(": Internal Video\n");
break;
}
gm = &(sc->curr_mode);
gm->mode_id = 0;
gm->psize = videobitdepth;
gm->ptype = 0;
gm->width = videosize & 0xffff;
gm->height = (videosize >> 16) & 0xffff;
gm->rowbytes = videorowbytes;
gm->hres = 80; /* XXX Hack */
gm->vres = 80; /* XXX Hack */
gm->fbsize = gm->rowbytes * gm->height;
gm->fbbase = (caddr_t) m68k_trunc_page(mac68k_vidlog);
gm->fboff = mac68k_vidlog & PGOFSET;
/* Perform common video attachment. */
grf_establish(sc, NULL, grfiv_mode, grfiv_phys);
}
static int
grfiv_mode(sc, cmd, arg)
struct grf_softc *sc;
int cmd;
void *arg;
{
switch (cmd) {
case GM_GRFON:
case GM_GRFOFF:
return 0;
case GM_CURRMODE:
break;
case GM_NEWMODE:
break;
case GM_LISTMODES:
break;
}
return EINVAL;
}
static caddr_t
grfiv_phys(gp, addr)
struct grf_softc *gp;
vaddr_t addr;
{
/*
* If we're using IIsi or similar, this will be 0.
* If we're using IIvx or similar, this will be correct.
*/
return (caddr_t) mac68k_vidphys;
}
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