xref: /src/sys/arch/pmax/tc/tcbus.c

/*	$NetBSD: tcbus.c,v 1.25.6.1 2011/06/06 09:06:25 jruoho Exp $	*/

/*-
 * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Tohru Nishimura.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tcbus.c,v 1.25.6.1 2011/06/06 09:06:25 jruoho Exp $");

/*
 * Which system models were configured?
 */
#include "opt_dec_3max.h"
#include "opt_dec_3min.h"
#include "opt_dec_maxine.h"
#include "opt_dec_3maxplus.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/autoconf.h>
#include <machine/sysconf.h>

#define	_PMAX_BUS_DMA_PRIVATE
#include <machine/bus.h>

#include <dev/tc/tcvar.h>
#include <pmax/pmax/pmaxtype.h>

static const struct evcnt *tc_ds_intr_evcnt(struct device *, void *);
static void	tc_ds_intr_establish(struct device *, void *,
				int, int (*)(void *), void *);
static void	tc_ds_intr_disestablish(struct device *, void *);
static bus_dma_tag_t tc_ds_get_dma_tag(int);

extern struct tcbus_attach_args kn02_tc_desc[];	/* XXX */
extern struct tcbus_attach_args kmin_tc_desc[];	/* XXX */
extern struct tcbus_attach_args xine_tc_desc[];	/* XXX */
extern struct tcbus_attach_args kn03_tc_desc[];	/* XXX */

static int	tcbus_match(device_t, cfdata_t, void *);
static void	tcbus_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(tcbus, sizeof(struct tc_softc),
    tcbus_match, tcbus_attach, NULL, NULL);

static int tcbus_found;

static int
tcbus_match(device_t parent, cfdata_t cf, void *aux)
{
	struct mainbus_attach_args *ma = aux;

	if (tcbus_found || strcmp(ma->ma_name, "tcbus"))
		return 0;

	return 1;
}

static void
tcbus_attach(device_t parent, device_t self, void *aux)
{
	struct tcbus_attach_args *tba;

	tcbus_found = 1;

	switch (systype) {
#ifdef DEC_3MAX
	case DS_3MAX:
		tba = &kn02_tc_desc[0]; break;
#endif
#ifdef DEC_3MIN
	case DS_3MIN:
		tba = &kmin_tc_desc[0]; break;
#endif
#ifdef DEC_MAXINE
	case DS_MAXINE:
		tba = &xine_tc_desc[0]; break;
#endif
#ifdef DEC_3MAXPLUS
	case DS_3MAXPLUS:
		tba = &kn03_tc_desc[0]; break;
#endif
	default:
		panic("tcbus_attach: no TURBOchannel configured for systype = %d", systype);
	}

	tba->tba_busname = "tc";
	tba->tba_memt = 0;
	tba->tba_intr_evcnt = tc_ds_intr_evcnt;
	tba->tba_intr_establish = tc_ds_intr_establish;
	tba->tba_intr_disestablish = tc_ds_intr_disestablish;
	tba->tba_get_dma_tag = tc_ds_get_dma_tag;

	/* XXX why not config_found(9)? */
	tcattach(parent, self, tba);
}

/*
 * Dispatch to model specific interrupt line evcnt fetch rontine
 */
static const struct evcnt *
tc_ds_intr_evcnt(device_t dev, void *cookie)
{

	/* XXX for now, no evcnt parent reported */
	return NULL;
}

/*
 * Dispatch to model specific interrupt establishing routine
 */
static void
tc_ds_intr_establish(device_t dev, void *cookie, int level,
    int (*handler)(void *), void *val)
{

	(*platform.intr_establish)(dev, cookie, level, handler, val);
}

static void
tc_ds_intr_disestablish(device_t dev, void *arg)
{

	printf("cannot disestablish TC interrupts\n");
}

/*
 * Return the DMA tag for use by the specified TURBOchannel slot.
 */
static bus_dma_tag_t
tc_ds_get_dma_tag(int slot)
{
	/*
	 * All DECstations use the default DMA tag.
	 */
	return (&pmax_default_bus_dma_tag);
}

#include "wsdisplay.h"

#if NWSDISPLAY > 0

#include "sfb.h"
/* #include "sfbp.h" */
#include "cfb.h"
#include "mfb.h"
#include "tfb.h"
#include "xcfb.h"
#include "px.h"
#include "pxg.h"

#include <pmax/pmax/cons.h>
#include <machine/dec_prom.h>

int	tc_checkslot(tc_addr_t, char *);

struct cnboards {
	const char	*cb_tcname;
	void	(*cb_cnattach)(tc_addr_t);
} static const cnboards[] = {
#if NXCFB > 0
	{ "PMAG-DV ", xcfb_cnattach },
#endif
#if NSFB > 0
	{ "PMAGB-BA", sfb_cnattach },
#endif
#if NSFBP > 0
	{ "PMAGD   ", sfbp_cnattach },
#endif
#if NCFB > 0
	{ "PMAG-BA ", cfb_cnattach },
#endif
#if NMFB > 0
	{ "PMAG-AA ", mfb_cnattach },
#endif
#if NTFB > 0
	{ "PMAG-JA ", tfb_cnattach },
#endif
#if NPX > 0
	{ "PMAG-CA ", px_cnattach },
#endif
#if NPXG > 0
	{ "PMAG-DA ", pxg_cnattach },
	{ "PMAG-FA ", pxg_cnattach },
	{ "PMAG-FB ", pxg_cnattach },
	{ "PMAGB-FA", pxg_cnattach },
	{ "PMAGB-FB", pxg_cnattach },
#endif
};

int
tcfb_cnattach(int slotno)
{
	paddr_t tcaddr;
	char tcname[TC_ROM_LLEN];
	int i;

	tcaddr = promcall(callv->_slot_address, slotno);
	if (tc_badaddr(tcaddr) || tc_checkslot(tcaddr, tcname) == 0)
		panic("TC console designated by PROM does not exist!?");

	for (i = 0; i < __arraycount(cnboards); i++) {
		if (strncmp(tcname, cnboards[i].cb_tcname, TC_ROM_LLEN) == 0)
			break;
	}

	if (i == __arraycount(cnboards))
		return (0);

	(cnboards[i].cb_cnattach)((tc_addr_t)TC_PHYS_TO_UNCACHED(tcaddr));
	return (1);
}

#endif	/* NWSDISPLAY */