NetBSD-5.0.2/sys/arch/hp700/gsc/osiop_gsc.c
/* $NetBSD: osiop_gsc.c,v 1.12 2008/05/14 13:29:28 tsutsui Exp $ */
/*
* Copyright (c) 2001 Matt Fredette. 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 AUTHORS ``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 AUTHORS 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.
*/
/*-
* Copyright (c) 2001, 2002 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*/
/* $OpenBSD: siop_gsc.c,v 1.1 1998/11/04 17:01:35 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* 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 by Michael Shalayeff.
* 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: osiop_gsc.c,v 1.12 2008/05/14 13:29:28 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/malloc.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <machine/cpu.h>
#include <machine/intr.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <dev/ic/osiopreg.h>
#include <dev/ic/osiopvar.h>
#include <hp700/dev/cpudevs.h>
#include <hp700/gsc/gscbusvar.h>
#include <hp700/hp700/machdep.h>
#define OSIOP_GSC_RESET 0x0000
#define OSIOP_GSC_OFFSET 0x0100
int osiop_gsc_match(device_t, cfdata_t, void *);
void osiop_gsc_attach(device_t, device_t, void *);
int osiop_gsc_intr(void *);
CFATTACH_DECL_NEW(osiop_gsc, sizeof(struct osiop_softc),
osiop_gsc_match, osiop_gsc_attach, NULL, NULL);
int
osiop_gsc_match(device_t parent, cfdata_t cf, void *aux)
{
struct gsc_attach_args *ga = aux;
bus_space_handle_t ioh;
int rv = 1;
if (ga->ga_type.iodc_type != HPPA_TYPE_FIO ||
(ga->ga_type.iodc_sv_model != HPPA_FIO_GSCSI))
return 0;
if (bus_space_map(ga->ga_iot, ga->ga_hpa,
OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh))
return 0;
bus_space_unmap(ga->ga_iot, ioh, OSIOP_GSC_OFFSET + OSIOP_NREGS);
return rv;
}
void
osiop_gsc_attach(device_t parent, device_t self, void *aux)
{
struct osiop_softc *sc = device_private(self);
struct gsc_attach_args *ga = aux;
bus_space_handle_t ioh;
sc->sc_dev = self;
sc->sc_bst = ga->ga_iot;
sc->sc_dmat = ga->ga_dmatag;
if (bus_space_map(sc->sc_bst, ga->ga_hpa,
OSIOP_GSC_OFFSET + OSIOP_NREGS, 0, &ioh))
panic("%s: couldn't map I/O ports", __func__);
if (bus_space_subregion(sc->sc_bst, ioh,
OSIOP_GSC_OFFSET, OSIOP_NREGS, &sc->sc_reg))
panic("%s: couldn't get chip ports", __func__);
sc->sc_clock_freq = ga->ga_ca.ca_pdc_iodc_read->filler2[14] / 1000000;
if (!sc->sc_clock_freq)
sc->sc_clock_freq = 50;
sc->sc_ctest7 = 0; /* | OSIOP_CTEST7_TT1 */
sc->sc_dcntl = OSIOP_DCNTL_EA;
sc->sc_flags = 0;
sc->sc_id = ga->ga_scsi_target;
/*
* Reset the SCSI subsystem.
*/
bus_space_write_1(sc->sc_bst, ioh, OSIOP_GSC_RESET, 0);
DELAY(1000);
/*
* Call common attachment
*/
#ifdef OSIOP_DEBUG
{
extern int osiop_debug;
osiop_debug = -1;
}
#endif /* OSIOP_DEBUG */
osiop_attach(sc);
(void)hp700_intr_establish(self, IPL_BIO,
osiop_gsc_intr, sc, ga->ga_int_reg, ga->ga_irq);
}
/*
* interrupt handler
*/
int
osiop_gsc_intr(void *arg)
{
struct osiop_softc *sc = arg;
u_int8_t istat;
/* This is potentially nasty, since the IRQ is level triggered... */
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;
/*
* Per page 4-18 of the LSI 53C710 Technical Manual,
* "insert a delay equivalent to 12 BCLK periods between
* the reads [of DSTAT and SSTAT0] to ensure that the
* interrupts clear properly."
*/
DELAY(100);
sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT);
/* Deal with the interrupt */
osiop_intr(sc);
/* Blink the LED. */
hp700_led_blink(HP700_LED_DISK);
return (1);
}