NetBSD/sys/arch/ews4800mips/sbd/osiop_sbdio.c
tsutsui 04faabf071 Initial import of NetBSD/ews4800mips port,
for NEC's MIPS based EWS4800 workstations.

Most porting work was done by UCHIYAMA Yasushi <uch@netbsd>
 http://mail-index.netbsd.org/port-mips/2004/06/27/0000.html
and various cleanup, updating, and fixes have been done by me.
Currently only EWS4800/350, 360, 360AD, 360ADII, 360EX and 360SX
models are supported.
2005-12-29 15:20:08 +00:00

121 lines
3.6 KiB
C

/* $NetBSD: osiop_sbdio.c,v 1.1 2005/12/29 15:20:09 tsutsui Exp $ */
/*
* Copyright (c) 2001, 2005 Izumi Tsutsui. 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. 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: osiop_sbdio.c,v 1.1 2005/12/29 15:20:09 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <machine/sbdiovar.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ic/osiopreg.h>
#include <dev/ic/osiopvar.h>
int osiop_sbdio_match(struct device *, struct cfdata *, void *);
void osiop_sbdio_attach(struct device *, struct device *, void *);
int osiop_sbdio_intr(void *);
CFATTACH_DECL(osiop_sbdio, sizeof(struct osiop_softc),
osiop_sbdio_match, osiop_sbdio_attach, NULL, NULL);
int
osiop_sbdio_match(struct device *parent, struct cfdata *match, void *aux)
{
struct sbdio_attach_args *sa = aux;
return strcmp(sa->sa_name, "osiop") ? 0 : 1;
}
void
osiop_sbdio_attach(struct device *parent, struct device *self, void *aux)
{
struct sbdio_attach_args *sa = aux;
struct osiop_softc *sc = (void *)self;
int error, scid;
printf(" at %p irq %d ", (void *)sa->sa_addr1, sa->sa_irq);
sc->sc_dmat = sa->sa_dmat;
sc->sc_bst = sa->sa_bust;
error = bus_space_map(sc->sc_bst, sa->sa_addr1, OSIOP_NREGS, 0,
&sc->sc_reg);
if (error != 0) {
printf(": can't map registers, error = %d\n", error);
return;
}
sc->sc_clock_freq = 25; /* MHz */
sc->sc_ctest7 = 0;
sc->sc_dcntl = OSIOP_DCNTL_EA;
if (sa->sa_flags == 0x0001) /* TR2A */
sc->sc_ctest4 = OSIOP_CTEST4_MUX; /* Host bus multiplex mode */
scid = ffs(osiop_read_1(sc, OSIOP_SCID));
if (scid == 0)
scid = 7;
else
scid--;
sc->sc_id = scid;
intr_establish(sa->sa_irq, osiop_sbdio_intr, self);
osiop_attach(sc);
}
int
osiop_sbdio_intr(void *arg)
{
struct osiop_softc *sc = arg;
uint8_t istat;
if (sc->sc_flags & OSIOP_INTSOFF)
return 0;
istat = osiop_read_1(sc, OSIOP_ISTAT);
if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0)
return 0;
/* Save interrupt details for the back-end interrupt handler */
sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0);
sc->sc_istat = istat;
sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT);
osiop_intr(sc);
return 1;
}