142 lines
4.5 KiB
C
142 lines
4.5 KiB
C
/* $NetBSD: dz_uba.c,v 1.28 2008/03/15 00:57:15 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: dz_uba.c,v 1.28 2008/03/15 00:57:15 matt Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/proc.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 <sys/bus.h>
|
|
#include <machine/pte.h>
|
|
#include <machine/trap.h>
|
|
#include <machine/scb.h>
|
|
|
|
#include <dev/qbus/ubavar.h>
|
|
|
|
#include <dev/dec/dzreg.h>
|
|
#include <dev/dec/dzvar.h>
|
|
|
|
#include "ioconf.h"
|
|
|
|
static int dz_uba_match(device_t, cfdata_t, void *);
|
|
static void dz_uba_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(dz_uba, sizeof(struct dz_softc),
|
|
dz_uba_match, dz_uba_attach, NULL, NULL);
|
|
|
|
/* Autoconfig handles: setup the controller to interrupt, */
|
|
/* then complete the housecleaning for full operation */
|
|
|
|
static int
|
|
dz_uba_match(device_t parent, cfdata_t 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(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct dz_softc *sc = device_private(self);
|
|
struct uba_attach_args *ua = aux;
|
|
|
|
sc->sc_dev = self;
|
|
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_dr.dr_firstreg = DZ_UBA_FIRSTREG;
|
|
sc->sc_dr.dr_winsize = DZ_UBA_WINSIZE;
|
|
|
|
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, ua->ua_evcnt, -1);
|
|
}
|