/* $NetBSD: zssc.c,v 1.45.42.1 2019/11/14 15:38:02 martin Exp $ */ /* * Copyright (c) 1982, 1990 The Regents of the University of California. * 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. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. * * @(#)dma.c */ /* * Copyright (c) 1994 Michael L. Hitch * * 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 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. * * @(#)dma.c */ #include __KERNEL_RCSID(0, "$NetBSD: zssc.c,v 1.45.42.1 2019/11/14 15:38:02 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include void zsscattach(device_t, device_t, void *); int zsscmatch(device_t, cfdata_t, void *); int zssc_dmaintr(void *); #ifdef DEBUG void zssc_dump(void); #endif CFATTACH_DECL_NEW(zssc, sizeof(struct siop_softc), zsscmatch, zsscattach, NULL, NULL); /* * if we are an PPI Zeus */ int zsscmatch(device_t parent, cfdata_t cf, void *aux) { struct zbus_args *zap; zap = aux; if (zap->manid == 2026 && zap->prodid == 150) return(1); return(0); } void zsscattach(device_t parent, device_t self, void *aux) { struct siop_softc *sc = device_private(self); struct zbus_args *zap; siop_regmap_p rp; printf("\n"); sc->sc_dev = self; zap = aux; sc->sc_siopp = rp = (siop_regmap_p)((char *)zap->va + 0x4000); /* * CTEST7 = 00 */ sc->sc_clock_freq = 66; /* Clock = 66 MHz */ sc->sc_ctest7 = 0x00; sc->sc_dcntl = 0x00; sc->sc_siop_si = softint_establish(SOFTINT_BIO, (void (*)(void *))siopintr, sc); sc->sc_adapter.adapt_dev = self; sc->sc_adapter.adapt_nchannels = 1; sc->sc_adapter.adapt_openings = 7; sc->sc_adapter.adapt_max_periph = 1; sc->sc_adapter.adapt_ioctl = NULL; sc->sc_adapter.adapt_minphys = siop_minphys; sc->sc_adapter.adapt_request = siop_scsipi_request; sc->sc_channel.chan_adapter = &sc->sc_adapter; sc->sc_channel.chan_bustype = &scsi_bustype; sc->sc_channel.chan_channel = 0; sc->sc_channel.chan_ntargets = 8; sc->sc_channel.chan_nluns = 8; sc->sc_channel.chan_id = 7; siopinitialize(sc); sc->sc_isr.isr_intr = zssc_dmaintr; sc->sc_isr.isr_arg = sc; sc->sc_isr.isr_ipl = 6; add_isr(&sc->sc_isr); /* * attach all scsi units on us */ config_found(self, &sc->sc_channel, scsiprint); } /* * Level 6 interrupt processing for the Progressive Peripherals Inc * Zeus SCSI. Because the level 6 interrupt is above splbio, the * interrupt status is saved and a softint scheduled. This way, * the actual processing of the interrupt can be deferred until * splbio is unblocked. */ int zssc_dmaintr(void *arg) { struct siop_softc *sc = arg; siop_regmap_p rp; int istat; if (sc->sc_flags & SIOP_INTSOFF) return (0); /* interrupts are not active */ rp = sc->sc_siopp; istat = rp->siop_istat; if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) return(0); /* * save interrupt status, DMA status, and SCSI status 0 * (may need to deal with stacked interrupts?) */ sc->sc_sstat0 = rp->siop_sstat0; sc->sc_istat = istat; sc->sc_dstat = rp->siop_dstat; /* * disable interrupts until the callback can process this * interrupt. */ rp->siop_sien = 0; rp->siop_dien = 0; sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF; softint_schedule(sc->sc_siop_si); return(1); } #ifdef DEBUG void zssc_dump(void) { extern struct cfdriver zssc_cd; struct siop_softc *sc; int i; for (i = 0; i < zssc_cd.cd_ndevs; ++i) { sc = device_lookup_private(&zssc_cd, i); if (sc != NULL) siop_dump(sc); } } #endif