/* $OpenBSD: osiop_gsc.c,v 1.14 2025/06/28 13:24:21 miod Exp $ */ /* $NetBSD: osiop_gsc.c,v 1.6 2002/10/02 05:17:50 thorpej Exp $ */ /* * Copyright (c) 2001 Matt Fredette. All rights reserved. * Copyright (c) 2001 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 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) 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. 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/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/buf.h> #include <sys/malloc.h> #include <scsi/scsi_all.h> #include <scsi/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 <hppa/dev/cpudevs.h> #include <hppa/gsc/gscbusvar.h> /* #include <hppa/hppa/machdep.h> */ #define OSIOP_GSC_RESET 0x0000 #define OSIOP_GSC_OFFSET 0x0100 int osiop_gsc_match(struct device *, void *, void *); void osiop_gsc_attach(struct device *, struct device *, void *); int osiop_gsc_intr(void *); const struct cfattach osiop_gsc_ca = { sizeof(struct osiop_softc), osiop_gsc_match, osiop_gsc_attach }; int osiop_gsc_match(struct device *parent, void *match, void *aux) { struct gsc_attach_args *ga = aux; if (ga->ga_type.iodc_type != HPPA_TYPE_FIO || ga->ga_type.iodc_sv_model != HPPA_FIO_GSCSI) return 0; return 1; } void osiop_gsc_attach(struct device *parent, struct device *self, void *aux) { struct osiop_softc *sc = (void *)self; struct gsc_attach_args *ga = aux; bus_space_handle_t ioh; 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("osiop_gsc_attach: couldn't map I/O ports"); if (bus_space_subregion(sc->sc_bst, ioh, OSIOP_GSC_OFFSET, OSIOP_NREGS, &sc->sc_reg)) panic("osiop_gsc_attach: couldn't get chip ports"); 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_dcntl = OSIOP_DCNTL_EA; /* XXX set burst mode to 8 words (32 bytes) */ sc->sc_ctest7 = OSIOP_CTEST7_CDIS; sc->sc_dmode = OSIOP_DMODE_BL8; /* | OSIOP_DMODE_FC2 */ sc->sc_flags = 0; sc->sc_id = 7; /* XXX */ /* * 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)gsc_intr_establish((struct gsc_softc *)parent, ga->ga_irq, IPL_BIO, osiop_gsc_intr, sc, sc->sc_dev.dv_xname); } /* * 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." 1 BCLK = 40ns. Pg. 6-10. */ DELAY(25); sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT); /* Deal with the interrupt */ osiop_intr(sc); #ifdef USELEDS ledctl(PALED_DISK, 0, 0); #endif return (1); }
