142 lines
3.7 KiB
C
142 lines
3.7 KiB
C
/* $NetBSD: osiop_jazzio.c,v 1.10 2011/07/01 19:25:42 dyoung Exp $ */
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/*-
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* Copyright (c) 2001 Izumi Tsutsui. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: osiop_jazzio.c,v 1.10 2011/07/01 19:25:42 dyoung Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/malloc.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <machine/cpu.h>
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#include <machine/autoconf.h>
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#include <sys/bus.h>
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#include <dev/ic/osiopreg.h>
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#include <dev/ic/osiopvar.h>
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#include <arc/jazz/jazziovar.h>
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int osiop_jazzio_match(device_t, cfdata_t, void *);
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void osiop_jazzio_attach(device_t, device_t, void *);
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int osiop_jazzio_intr(void *);
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CFATTACH_DECL_NEW(osiop_jazzio, sizeof(struct osiop_softc),
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osiop_jazzio_match, osiop_jazzio_attach, NULL, NULL);
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int
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osiop_jazzio_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct jazzio_attach_args *ja = aux;
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if (strcmp(ja->ja_name, "NCRC710") != 0)
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return 0;
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return 1;
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}
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void
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osiop_jazzio_attach(device_t parent, device_t self, void *aux)
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{
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struct osiop_softc *sc = device_private(self);
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struct jazzio_attach_args *ja = aux;
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int err, scid;
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sc->sc_dev = self;
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sc->sc_bst = ja->ja_bust;
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sc->sc_dmat = ja->ja_dmat;
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/*
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* Map registers
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*/
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err = bus_space_map(sc->sc_bst, ja->ja_addr,
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OSIOP_NREGS, 0, &sc->sc_reg);
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if (err) {
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aprint_error(": failed to map registers, err=%d\n", err);
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return;
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}
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sc->sc_clock_freq = 50; /* MHz */
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sc->sc_ctest7 = 0; /* | OSIOP_CTEST7_TT1 */
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sc->sc_dcntl = OSIOP_DCNTL_EA;
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/* XXX should check ID in BIOS variables? */
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scid = ffs(osiop_read_1(sc, OSIOP_SCID));
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if (scid == 0)
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scid = 7;
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else
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scid--;
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sc->sc_id = scid;
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/*
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* Call common attachment
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*/
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osiop_attach(sc);
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/*
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* Set up interrupt handler.
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*/
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jazzio_intr_establish(ja->ja_intr,
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(intr_handler_t)osiop_jazzio_intr, sc);
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}
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/*
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* interrupt handler
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*/
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int
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osiop_jazzio_intr(void *arg)
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{
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struct osiop_softc *sc = arg;
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uint8_t istat;
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/* This is potentially nasty, since the IRQ is level triggered... */
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if (sc->sc_flags & OSIOP_INTSOFF)
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return 0;
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istat = osiop_read_1(sc, OSIOP_ISTAT);
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if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0)
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return 0;
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/* Save interrupt details for the back-end interrupt handler */
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sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0);
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sc->sc_istat = istat;
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sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT);
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/* Deal with the interrupt */
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osiop_intr(sc);
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return 1;
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}
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