NetBSD/sys/arch/vax/uba/dz_uba.c

143 lines
4.2 KiB
C

/* $NetBSD: dz_uba.c,v 1.1 1998/05/17 18:51:13 ragge 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/pte.h>
#include <machine/trap.h>
#include <vax/uba/ubareg.h>
#include <vax/uba/ubavar.h>
#include <vax/uba/dzreg.h>
#include <vax/uba/dzvar.h>
#include "ioconf.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), 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;
register dzregs *dzaddr;
register int n;
dzaddr = (dzregs *) ua->ua_addr;
/* Reset controller to initialize, enable TX interrupts */
/* to catch floating vector info elsewhere when completed */
dzaddr->dz_csr = (DZ_CSR_MSE | DZ_CSR_TXIE);
dzaddr->dz_tcr = 1; /* Force a TX interrupt */
DELAY(100000); /* delay 1/10 second */
dzaddr->dz_csr = DZ_CSR_RESET;
/* Now wait up to 3 seconds for reset/clear to complete. */
for (n = 0; n < 300; n++) {
DELAY(10000);
if ((dzaddr->dz_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 */
ua->ua_ivec = dzxint;
return (1);
}
static void
dz_uba_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct uba_softc *uh = (void *)parent;
struct dz_softc *sc = (void *)self;
register struct uba_attach_args *ua = aux;
register dzregs *da;
da = (dzregs *) ua->ua_addr;
sc->sc_dr.dr_csr = &da->dz_csr;
sc->sc_dr.dr_rbuf = &da->dz_rbuf;
sc->sc_dr.dr_dtr = &da->dz_dtr;
sc->sc_dr.dr_break = &da->dz_break;
sc->sc_dr.dr_tbuf = &da->dz_tbuf;
sc->sc_dr.dr_tcr = &da->dz_tcr;
sc->sc_dr.dr_dcd = &da->dz_dcd;
sc->sc_dr.dr_ring = &da->dz_ring;
#ifdef QBA
if (uh->uh_type == QBA)
sc->sc_type = DZ_DZV;
else
#endif
sc->sc_type = DZ_DZ;
/* Now register the RX interrupt handler */
ubasetvec(self, ua->ua_cvec-1, dzrint);
dzattach(sc);
}