342 lines
9.5 KiB
C
342 lines
9.5 KiB
C
/* $NetBSD: csc.c,v 1.6 1999/09/30 22:59:53 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 <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <vm/vm_page.h>
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#include <machine/pmap.h>
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#include <machine/io.h>
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#include <machine/irqhandler.h>
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#include <machine/bootconfig.h>
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#include <arm32/podulebus/podulebus.h>
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#include <arm32/podulebus/sfasreg.h>
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#include <arm32/podulebus/sfasvar.h>
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#include <arm32/podulebus/cscreg.h>
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#include <arm32/podulebus/cscvar.h>
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#include <arm32/podulebus/podules.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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int csc_scsicmd __P((struct scsipi_xfer *));
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struct scsipi_device csc_scsidev = {
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NULL, /* use default error handler */
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NULL, /* do not have a start functio */
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NULL, /* have no async handler */
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NULL, /* Use default done routine */
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};
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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) == 0)
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return(0);
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return(1);
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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.scsipi_cmd = csc_scsicmd;
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sc->sc_softc.sc_adapter.scsipi_minphys = sfas_minphys;
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sc->sc_softc.sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
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sc->sc_softc.sc_link.adapter_softc = sc;
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sc->sc_softc.sc_link.scsipi_scsi.adapter_target = sc->sc_softc.sc_host_id;
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sc->sc_softc.sc_link.adapter = &sc->sc_softc.sc_adapter;
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sc->sc_softc.sc_link.device = &csc_scsidev;
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sc->sc_softc.sc_link.openings = 1;
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sc->sc_softc.sc_link.scsipi_scsi.max_target = 7;
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sc->sc_softc.sc_link.scsipi_scsi.max_lun = 7;
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sc->sc_softc.sc_link.type = BUS_SCSI;
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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_link.scsipi_scsi.adapter_target);
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printf(" host=%d", sc->sc_softc.sc_link.scsipi_scsi.adapter_target);
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sc->sc_softc.sc_ih.ih_func = csc_intr;
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sc->sc_softc.sc_ih.ih_arg = &sc->sc_softc;
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sc->sc_softc.sc_ih.ih_level = IPL_BIO;
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sc->sc_softc.sc_ih.ih_name = "scsi: csc";
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sc->sc_softc.sc_ih.ih_maskaddr = sc->sc_specific.sc_podule->irq_addr;
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sc->sc_softc.sc_ih.ih_maskbits = sc->sc_specific.sc_podule->irq_mask;
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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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if (irq_claim(IRQ_PODULE, &sc->sc_softc.sc_ih))
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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_link, 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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int
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csc_scsicmd(xs)
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struct scsipi_xfer *xs;
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{
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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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return(sfas_scsicmd(xs));
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}
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