349 lines
9.7 KiB
C
349 lines
9.7 KiB
C
/* $NetBSD: csc.c,v 1.2 2001/11/27 00:53:12 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Scott Stevens.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Cumana SCSI-2 driver uses the SFAS216 generic driver
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <uvm/uvm_extern.h>
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#include <machine/pmap.h>
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#include <machine/io.h>
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#include <machine/intr.h>
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#include <machine/bootconfig.h>
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#include <acorn32/podulebus/podulebus.h>
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#include <acorn32/podulebus/sfasreg.h>
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#include <acorn32/podulebus/sfasvar.h>
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#include <acorn32/podulebus/cscreg.h>
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#include <acorn32/podulebus/cscvar.h>
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#include <dev/podulebus/podules.h>
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#include <dev/podulebus/powerromreg.h>
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void cscattach __P((struct device *, struct device *, void *));
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int cscmatch __P((struct device *, struct cfdata *, void *));
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void csc_scsi_request __P((struct scsipi_channel *,
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scsipi_adapter_req_t, void *));
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struct cfattach csc_ca = {
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sizeof(struct csc_softc), cscmatch, cscattach
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};
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int csc_intr __P((void *arg));
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int csc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len,
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int mode));
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int csc_build_dma_chain __P((struct sfas_softc *sc,
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struct sfas_dma_chain *chain, void *p, int l));
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int csc_need_bump __P((struct sfas_softc *sc, void *ptr, int len));
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void csc_led __P((struct sfas_softc *sc, int mode));
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/*
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* if we are a Cumana SCSI-2 card
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*/
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int
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cscmatch(pdp, cf, auxp)
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struct device *pdp;
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struct cfdata *cf;
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void *auxp;
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{
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struct podule_attach_args *pa = (struct podule_attach_args *)auxp;
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/* Look for the card */
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if (matchpodule(pa, MANUFACTURER_CUMANA, PODULE_CUMANA_SCSI2, -1))
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return 1;
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/* PowerROM */
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if (pa->pa_product == PODULE_ALSYSTEMS_SCSI &&
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podulebus_initloader(pa) == 0 &&
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podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2)
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return 1;
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return 0;
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}
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void
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cscattach(pdp, dp, auxp)
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struct device *pdp;
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struct device *dp;
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void *auxp;
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{
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struct csc_softc *sc = (struct csc_softc *)dp;
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struct podule_attach_args *pa;
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csc_regmap_p rp = &sc->sc_regmap;
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vu_char *fas;
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int loop;
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pa = (struct podule_attach_args *)auxp;
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if (pa->pa_podule_number == -1)
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panic("Podule has disappeared !");
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sc->sc_specific.sc_podule_number = pa->pa_podule_number;
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sc->sc_specific.sc_podule = pa->pa_podule;
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sc->sc_specific.sc_iobase =
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(vu_char *)sc->sc_specific.sc_podule->mod_base;
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rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0];
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rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH];
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rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK];
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fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE];
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rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL];
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rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM];
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rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO];
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rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND];
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rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID];
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rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT];
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rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD];
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rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET];
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rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1];
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rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV];
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rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST];
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rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2];
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rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3];
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rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH];
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rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT];
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sc->sc_softc.sc_fas = (sfas_regmap_p)rp;
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sc->sc_softc.sc_spec = &sc->sc_specific;
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sc->sc_softc.sc_led = csc_led;
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sc->sc_softc.sc_setup_dma = csc_setup_dma;
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sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain;
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sc->sc_softc.sc_need_bump = csc_need_bump;
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sc->sc_softc.sc_clock_freq = 8; /* Cumana runs at 8MHz */
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sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */
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sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/;
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sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */
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sc->sc_softc.sc_bump_sz = NBPG;
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sc->sc_softc.sc_bump_pa = 0x0;
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sfasinitialize((struct sfas_softc *)sc);
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sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev;
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sc->sc_softc.sc_adapter.adapt_nchannels = 1;
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sc->sc_softc.sc_adapter.adapt_openings = 7;
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sc->sc_softc.sc_adapter.adapt_max_periph = 1;
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sc->sc_softc.sc_adapter.adapt_ioctl = NULL;
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sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys;
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sc->sc_softc.sc_adapter.adapt_request = csc_scsi_request;
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sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter;
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sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype;
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sc->sc_softc.sc_channel.chan_channel = 0;
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sc->sc_softc.sc_channel.chan_ntargets = 8;
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sc->sc_softc.sc_channel.chan_nluns = 8;
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sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id;
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/* Provide an override for the host id */
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(void)get_bootconf_option(boot_args, "csc.hostid",
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BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id);
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printf(": host=%d", sc->sc_softc.sc_channel.chan_id);
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/* initialise the alatch */
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sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN);
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for (loop = 0; loop < 8; loop ++) {
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if(loop != 3)
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*rp->alatch = (loop << 1) |
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((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0);
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}
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#if CSC_POLL == 0
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evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL,
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dp->dv_xname, "intr");
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sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO,
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csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt);
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if (sc->sc_softc.sc_ih == NULL)
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panic("%s: Cannot install IRQ handler\n", dp->dv_xname);
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#else
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printf(" polling");
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#endif
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printf("\n");
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/* attach all scsi units on us */
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config_found(dp, &sc->sc_softc.sc_channel, scsiprint);
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}
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int
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csc_intr(arg)
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void *arg;
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{
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struct sfas_softc *dev = arg;
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csc_regmap_p rp;
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int quickints;
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rp = (csc_regmap_p)dev->sc_fas;
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if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) {
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quickints = 16;
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do {
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dev->sc_status = *rp->FAS216.sfas_status;
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dev->sc_interrupt = *rp->FAS216.sfas_interrupt;
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if (dev->sc_interrupt & SFAS_INT_RESELECTED) {
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dev->sc_resel[0] = *rp->FAS216.sfas_fifo;
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dev->sc_resel[1] = *rp->FAS216.sfas_fifo;
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}
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sfasintr(dev);
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} while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING)
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&& --quickints);
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}
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return(0); /* Pass interrupt on down the chain */
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}
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/* Load transfer address into dma register */
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void
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csc_set_dma_adr(sc, ptr)
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struct sfas_softc *sc;
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void *ptr;
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{
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return;
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}
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/* Set DMA transfer counter */
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void
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csc_set_dma_tc(sc, len)
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struct sfas_softc *sc;
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unsigned int len;
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{
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*sc->sc_fas->sfas_tc_low = len; len >>= 8;
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*sc->sc_fas->sfas_tc_mid = len; len >>= 8;
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*sc->sc_fas->sfas_tc_high = len;
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}
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/* Set DMA mode */
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void
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csc_set_dma_mode(sc, mode)
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struct sfas_softc *sc;
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int mode;
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{
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}
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/* Initialize DMA for transfer */
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int
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csc_setup_dma(sc, ptr, len, mode)
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struct sfas_softc *sc;
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void *ptr;
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int len;
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int mode;
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{
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return(0);
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}
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/* Check if address and len is ok for DMA transfer */
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int
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csc_need_bump(sc, ptr, len)
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struct sfas_softc *sc;
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void *ptr;
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int len;
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{
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int p;
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p = (int)ptr & 0x03;
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if (p) {
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p = 4-p;
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if (len < 256)
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p = len;
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}
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return(p);
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}
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/* Interrupt driven routines */
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int
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csc_build_dma_chain(sc, chain, p, l)
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struct sfas_softc *sc;
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struct sfas_dma_chain *chain;
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void *p;
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int l;
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{
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return(0);
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}
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/* Turn on/off led */
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void
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csc_led(sc, mode)
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struct sfas_softc *sc;
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int mode;
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{
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csc_regmap_p rp;
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rp = (csc_regmap_p)sc->sc_fas;
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if (mode) {
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sc->sc_led_status++;
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} else {
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if (sc->sc_led_status)
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sc->sc_led_status--;
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}
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}
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void
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csc_scsi_request(chan, req, arg)
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struct scsipi_channel *chan;
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scsipi_adapter_req_t req;
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void *arg;
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{
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struct scsipi_xfer *xs;
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switch (req) {
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case ADAPTER_REQ_RUN_XFER:
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xs = arg;
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/* ensure command is polling for the moment */
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#if CSC_POLL > 0
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xs->xs_control |= XS_CTL_POLL;
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#endif
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default:
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}
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sfas_scsi_request(chan, req, arg);
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}
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