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/* $OpenBSD: dz_uba.c,v 1.2 2001/08/25 13:33:37 hugh Exp $ */
/* $NetBSD: dz_uba.c,v 1.11 2000/06/04 06:17:02 matt Exp $ */
/*
* Copyright (c) 1998 Ludd, University of Lule}, Sweden. All rights reserved.
* Copyright (c) 1996 Ken C. Wellsch. 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 at Ludd, University of
* Lule}, Sweden and its contributors.
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/map.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/pte.h>
#include <machine/trap.h>
#include <machine/scb.h>
#include <arch/vax/qbus/ubavar.h>
#include <arch/vax/qbus/dzreg.h>
#include <arch/vax/qbus/dzvar.h>
static int dz_uba_match __P((struct device *, struct cfdata *, void *));
static void dz_uba_attach __P((struct device *, struct device *, void *));
struct cfattach dz_uba_ca = {
sizeof(struct dz_softc), (cfmatch_t)dz_uba_match, dz_uba_attach
};
/* Autoconfig handles: setup the controller to interrupt, */
/* then complete the housecleaning for full operation */
static int
dz_uba_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct uba_attach_args *ua = aux;
bus_space_tag_t iot = ua->ua_iot;
bus_space_handle_t ioh = ua->ua_ioh;
int n;
iot = iot; /* Silly GCC */
/* Reset controller to initialize, enable TX interrupts */
/* to catch floating vector info elsewhere when completed */
bus_space_write_2(iot, ioh, DZ_UBA_CSR, DZ_CSR_MSE | DZ_CSR_TXIE);
bus_space_write_1(iot, ioh, DZ_UBA_TCR, 1);
DELAY(100000); /* delay 1/10 second */
bus_space_write_2(iot, ioh, DZ_UBA_CSR, DZ_CSR_RESET);
/* Now wait up to 3 seconds for reset/clear to complete. */
for (n = 0; n < 300; n++) {
DELAY(10000);
if ((bus_space_read_2(iot, ioh, DZ_UBA_CSR)&DZ_CSR_RESET) == 0)
break;
}
/* If the RESET did not clear after 3 seconds, */
/* the controller must be broken. */
if (n >= 300)
return (0);
/* Register the TX interrupt handler */
return (1);
}
static void
dz_uba_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct dz_softc *sc = (void *)self;
struct uba_attach_args *ua = aux;
sc->sc_iot = ua->ua_iot;
sc->sc_ioh = ua->ua_ioh;
sc->sc_dr.dr_csr = DZ_UBA_CSR;
sc->sc_dr.dr_rbuf = DZ_UBA_RBUF;
sc->sc_dr.dr_dtr = DZ_UBA_DTR;
sc->sc_dr.dr_break = DZ_UBA_BREAK;
sc->sc_dr.dr_tbuf = DZ_UBA_TBUF;
sc->sc_dr.dr_tcr = DZ_UBA_TCR;
sc->sc_dr.dr_dcd = DZ_UBA_DCD;
sc->sc_dr.dr_ring = DZ_UBA_RING;
sc->sc_type = DZ_DZ;
/* Now register the TX & RX interrupt handlers */
uba_intr_establish(ua->ua_icookie, ua->ua_cvec,
dzxint, sc, &sc->sc_tintrcnt);
uba_intr_establish(ua->ua_icookie, ua->ua_cvec - 4,
dzrint, sc, &sc->sc_rintrcnt);
uba_reset_establish(dzreset, self);
dzattach(sc);
}
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