/* $NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej 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) 2011 Radoslaw Kujawa * 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: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define BPPC_SCSI_OFF 0xf40000 #define BPPC_PUPROM_OFF 0xf00010 void bppcscattach(device_t, device_t, void *); int bppcscmatch(device_t, cfdata_t, void *); int bppcsc_dmaintr(void *); #ifdef DEBUG void bppcsc_dump(void); #endif CFATTACH_DECL_NEW(bppcsc, sizeof(struct siop_softc), bppcscmatch, bppcscattach, NULL, NULL); /* * if we are a Phase5 BlizzardPPC 603e+ */ int bppcscmatch(device_t parent, cfdata_t cf, void *aux) { struct p5bus_attach_args *p5baa; p5baa = aux; if (strcmp(p5baa->p5baa_name, "bppcsc") == 0) return 1; return 0 ; } void bppcscattach(device_t parent, device_t self, void *aux) { struct siop_softc *sc; struct scsipi_adapter *adapt; struct scsipi_channel *chan; siop_regmap_p rp; sc = device_private(self); sc->sc_dev = self; adapt = &sc->sc_adapter; chan = &sc->sc_channel; aprint_naive(": SCSI controller\n"); aprint_normal(": BlizzardPPC 603e+ SCSI adapter\n"); sc->sc_siopp = rp = ztwomap(BPPC_SCSI_OFF); #ifdef DEBUG siop_dump(sc); #endif /* * CTEST7 = 00 */ sc->sc_clock_freq = 50; /* Clock = 50 MHz */ sc->sc_ctest7 = 0x00; sc->sc_dcntl = 0x20; /* XXX - taken from cbiiisc */ /* * 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 = siop_scsipi_request; adapt->adapt_minphys = siop_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 = 8; chan->chan_nluns = 8; chan->chan_id = 7; siopinitialize(sc); sc->sc_isr.isr_intr = bppcsc_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, CFARGS_NONE); } int bppcsc_dmaintr(void *arg) { struct siop_softc *sc; siop_regmap_p rp; u_char istat; sc = arg; 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_sstat0 = rp->siop_sstat0; sc->sc_istat = istat; sc->sc_dstat = rp->siop_dstat; amiga_membarrier(); siopintr(sc); return 1; } #ifdef DEBUG void bppcsc_dump(void) { extern struct cfdriver bppcsc_cd; struct siop_softc *sc; int i; for (i = 0; i < bppcsc_cd.cd_ndevs; ++i) { sc = device_lookup_private(&bppcsc_cd, i); if (sc != NULL) siop_dump(sc); } } #endif