/* $NetBSD: cbiiisc.c,v 1.21 2012/10/27 17:17:28 chs 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) 1994,1998 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: cbiiisc.c,v 1.21 2012/10/27 17:17:28 chs Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #define ARCH_720 /* This is for a 53c770 */ #include #include #include #include void cbiiiscattach(device_t, device_t, void *); int cbiiiscmatch(device_t, cfdata_t, void *); int cbiiisc_dmaintr(void *); #ifdef DEBUG void cbiiisc_dump(void); #endif #ifdef DEBUG #endif CFATTACH_DECL_NEW(cbiiisc, sizeof(struct siop_softc), cbiiiscmatch, cbiiiscattach, NULL, NULL); /* * if we are a CyberStorm MK III SCSI */ int cbiiiscmatch(device_t parent, cfdata_t cf, void *aux) { struct p5bus_attach_args *p5baa; p5baa = aux; if (strcmp(p5baa->p5baa_name, "cbiiisc") == 0) return 1; return 0; } void cbiiiscattach(device_t parent, device_t self, void *aux) { struct siop_softc *sc = device_private(self); siop_regmap_p rp; struct scsipi_adapter *adapt = &sc->sc_adapter; struct scsipi_channel *chan = &sc->sc_channel; aprint_normal(": CyberStorm PPC/Mk-III SCSI host adapter\n"); sc->sc_dev = self; sc->sc_siopp = rp = ztwomap(0xf40000); /* siopng_dump_registers(sc); */ /* * CTEST7 = 00 */ sc->sc_clock_freq = 50; /* Clock = 50 MHz >> */ sc->sc_ctest7 = 0x00; sc->sc_dcntl = 0x20; /* XXX ?? */ /* * Fill in the scsipi_adapter. */ memset(adapt, 0, sizeof(*adapt)); adapt->adapt_dev = self; adapt->adapt_nchannels = 1; adapt->adapt_openings = 7; adapt->adapt_max_periph = 1; adapt->adapt_request = siopng_scsipi_request; adapt->adapt_minphys = siopng_minphys; /* * Fill in the scsipi_channel. */ memset(chan, 0, sizeof(*chan)); chan->chan_adapter = adapt; chan->chan_bustype = &scsi_bustype; chan->chan_channel = 0; chan->chan_ntargets = 16; chan->chan_nluns = 8; chan->chan_id = 7; siopnginitialize(sc); if (sc->sc_channel.chan_ntargets < 0) return; sc->sc_isr.isr_intr = cbiiisc_dmaintr; sc->sc_isr.isr_arg = sc; sc->sc_isr.isr_ipl = 2; /* ?? */ add_isr(&sc->sc_isr); /* * attach all scsi units on us */ config_found(self, chan, scsiprint); } int cbiiisc_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; amiga_membarrier(); 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_sist = rp->siop_sist; sc->sc_istat = istat; sc->sc_dstat = rp->siop_dstat; amiga_membarrier(); siopngintr(sc); return(1); } #ifdef DEBUG void cbiiisc_dump(void) { extern struct cfdriver cbiiisc_cd; struct siop_softc *sc; int i; for (i = 0; i < cbiiisc_cd.cd_ndevs; ++i) { sc = device_lookup_private(&cbiiisc_cd, i); if (sc != NULL) siopng_dump(sc); } } #endif