224 lines
7.6 KiB
C
224 lines
7.6 KiB
C
/* $NetBSD: osiop_gsc.c,v 1.15 2009/11/03 05:07:25 snj Exp $ */
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/*
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* Copyright (c) 2001 Matt Fredette. 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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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/*-
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* Copyright (c) 2001, 2002 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 AUTHORS ``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 AUTHORS 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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/* $OpenBSD: siop_gsc.c,v 1.1 1998/11/04 17:01:35 mickey Exp $ */
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/*
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* Copyright (c) 1998 Michael Shalayeff
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* 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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_gsc.c,v 1.15 2009/11/03 05:07:25 snj 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/intr.h>
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#include <machine/iomod.h>
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#include <machine/autoconf.h>
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#include <machine/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 <hp700/dev/cpudevs.h>
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#include <hp700/gsc/gscbusvar.h>
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#include <hp700/hp700/machdep.h>
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#define OSIOP_GSC_RESET 0x0000
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#define OSIOP_GSC_OFFSET 0x0100
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int osiop_gsc_match(device_t, cfdata_t, void *);
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void osiop_gsc_attach(device_t, device_t, void *);
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int osiop_gsc_intr(void *);
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CFATTACH_DECL_NEW(osiop_gsc, sizeof(struct osiop_softc),
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osiop_gsc_match, osiop_gsc_attach, NULL, NULL);
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int
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osiop_gsc_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct gsc_attach_args *ga = aux;
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bus_space_handle_t ioh;
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int rv = 1;
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if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
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(ga->ga_type.iodc_sv_model != HPPA_FIO_GSCSI))
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return 0;
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if (bus_space_map(ga->ga_iot, ga->ga_hpa,
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OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh))
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return 0;
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bus_space_unmap(ga->ga_iot, ioh, OSIOP_GSC_OFFSET + OSIOP_NREGS);
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return rv;
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}
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void
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osiop_gsc_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 gsc_attach_args *ga = aux;
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bus_space_handle_t ioh;
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sc->sc_dev = self;
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sc->sc_bst = ga->ga_iot;
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sc->sc_dmat = ga->ga_dmatag;
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if (bus_space_map(sc->sc_bst, ga->ga_hpa,
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OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh))
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panic("%s: couldn't map I/O ports", __func__);
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if (bus_space_subregion(sc->sc_bst, ioh,
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OSIOP_GSC_OFFSET, OSIOP_NREGS, &sc->sc_reg))
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panic("%s: couldn't get chip ports", __func__);
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sc->sc_clock_freq = ga->ga_ca.ca_pdc_iodc_read->filler2[14] / 1000000;
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if (!sc->sc_clock_freq)
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sc->sc_clock_freq = 50;
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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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sc->sc_flags = 0;
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sc->sc_id = ga->ga_scsi_target;
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/*
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* Reset the SCSI subsystem.
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*/
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bus_space_write_1(sc->sc_bst, ioh, OSIOP_GSC_RESET, 0);
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DELAY(1000);
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/*
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* Call common attachment
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*/
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#ifdef OSIOP_DEBUG
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{
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extern int osiop_debug;
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osiop_debug = -1;
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}
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#endif /* OSIOP_DEBUG */
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osiop_attach(sc);
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(void)hp700_intr_establish(self, IPL_BIO,
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osiop_gsc_intr, sc, ga->ga_int_reg, ga->ga_irq);
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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_gsc_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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/*
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* Per page 4-18 of the LSI 53C710 Technical Manual,
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* "insert a delay equivalent to 12 BCLK periods between
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* the reads [of DSTAT and SSTAT0] to ensure that the
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* interrupts clear properly."
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*/
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DELAY(100);
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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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/* Blink the LED. */
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hp700_led_blink(HP700_LED_DISK);
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return (1);
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}
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