488 lines
12 KiB
C
488 lines
12 KiB
C
/* $NetBSD: ptsc.c,v 1.19 1998/05/24 18:19:29 mark Exp $ */
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/*
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* Copyright (c) 1995 Scott Stevens
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* Copyright (c) 1995 Daniel Widenfalk
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* Copyright (c) 1994 Christian E. Hopps
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* Copyright (c) 1982, 1990 The Regents of the University of California.
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* All rights reserved.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ptsc.c
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*/
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/*
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* Power-tec SCSI-2 driver uses SFAS216 generic driver
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*
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* Thanks to Alsystems for loaning a development card and providing
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* programming information.
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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/ptscreg.h>
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#include <arm32/podulebus/ptscvar.h>
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#include <arm32/podulebus/podules.h>
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void ptscattach __P((struct device *, struct device *, void *));
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int ptscmatch __P((struct device *, struct cfdata *, void *));
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int ptsc_scsicmd __P((struct scsipi_xfer *));
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struct scsipi_adapter ptsc_scsiswitch = {
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ptsc_scsicmd,
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sfas_minphys,
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0, /* no lun support */
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0, /* no lun support */
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};
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struct scsipi_device ptsc_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 ptsc_ca = {
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sizeof(struct ptsc_softc), ptscmatch, ptscattach
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};
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int ptsc_intr __P((void *arg));
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int ptsc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len,
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int mode));
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int ptsc_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 ptsc_need_bump __P((struct sfas_softc *sc, void *ptr, int len));
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void ptsc_led __P((struct sfas_softc *sc, int mode));
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/*
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* if we are a Power-tec SCSI-2 card
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*/
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int
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ptscmatch(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_ALSYSTEMS, PODULE_ALSYSTEMS_SCSI, -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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ptscattach(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 ptsc_softc *sc = (struct ptsc_softc *)dp;
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struct podule_attach_args *pa;
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ptsc_regmap_p rp = &sc->sc_regmap;
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vu_char *fas;
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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->fast_base;
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rp->chipreset = &sc->sc_specific.sc_iobase[PTSC_CONTROL_CHIPRESET];
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rp->inten = &sc->sc_specific.sc_iobase[PTSC_CONTROL_INTEN];
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rp->status = &sc->sc_specific.sc_iobase[PTSC_STATUS];
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rp->term = &sc->sc_specific.sc_iobase[PTSC_CONTROL_TERM];
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rp->led = &sc->sc_specific.sc_iobase[PTSC_CONTROL_LED];
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fas = &sc->sc_specific.sc_iobase[PTSC_FASOFFSET_BASE];
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rp->FAS216.sfas_tc_low = &fas[PTSC_FASOFFSET_TCL];
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rp->FAS216.sfas_tc_mid = &fas[PTSC_FASOFFSET_TCM];
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rp->FAS216.sfas_fifo = &fas[PTSC_FASOFFSET_FIFO];
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rp->FAS216.sfas_command = &fas[PTSC_FASOFFSET_COMMAND];
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rp->FAS216.sfas_dest_id = &fas[PTSC_FASOFFSET_DESTID];
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rp->FAS216.sfas_timeout = &fas[PTSC_FASOFFSET_TIMEOUT];
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rp->FAS216.sfas_syncper = &fas[PTSC_FASOFFSET_PERIOD];
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rp->FAS216.sfas_syncoff = &fas[PTSC_FASOFFSET_OFFSET];
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rp->FAS216.sfas_config1 = &fas[PTSC_FASOFFSET_CONFIG1];
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rp->FAS216.sfas_clkconv = &fas[PTSC_FASOFFSET_CLOCKCONV];
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rp->FAS216.sfas_test = &fas[PTSC_FASOFFSET_TEST];
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rp->FAS216.sfas_config2 = &fas[PTSC_FASOFFSET_CONFIG2];
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rp->FAS216.sfas_config3 = &fas[PTSC_FASOFFSET_CONFIG3];
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rp->FAS216.sfas_tc_high = &fas[PTSC_FASOFFSET_TCH];
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rp->FAS216.sfas_fifo_bot = &fas[PTSC_FASOFFSET_FIFOBOTTOM];
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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 = ptsc_led;
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sc->sc_softc.sc_setup_dma = ptsc_setup_dma;
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sc->sc_softc.sc_build_dma_chain = ptsc_build_dma_chain;
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sc->sc_softc.sc_need_bump = ptsc_need_bump;
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sc->sc_softc.sc_clock_freq = 40; /* Power-Tec 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_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 = &ptsc_scsiswitch;
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sc->sc_softc.sc_link.device = &ptsc_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.type = BUS_SCSI;
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/* Provide an override for the host id */
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(void)get_bootconf_option(boot_args, "ptsc.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 = ptsc_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: ptsc";
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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 card */
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/* *rp->term = 0;*/
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*rp->inten = (PTSC_POLL?0:1);
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*rp->led = 0;
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#if PTSC_POLL == 0
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if (irq_claim(IRQ_PODULE /*IRQ_EXPCARD0 + sc->sc_specific.sc_podule_number */,
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&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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ptsc_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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ptsc_regmap_p rp;
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int quickints;
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rp = (ptsc_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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ptsc_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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#if 0
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ptsc_regmap_p rp;
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unsigned int *p;
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unsigned int d;
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#endif
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#if 0
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printf("ptsc_set_dma_adr(sc = 0x%08x, ptr = 0x%08x)\n", (u_int)sc, (u_int)ptr);
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#endif
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return;
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#if 0
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rp = (ptsc_regmap_p)sc->sc_fas;
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d = (unsigned int)ptr;
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p = (unsigned int *)((d & 0xFFFFFF) + (int)rp->dmabase);
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*rp->clear=0;
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*p = d;
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#endif
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}
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/* Set DMA transfer counter */
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void
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ptsc_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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printf("ptsc_set_dma_tc(sc, len = 0x%08x)", len);
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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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ptsc_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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#if 0
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struct csc_specific *spec;
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spec = sc->sc_spec;
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spec->portbits = (spec->portbits & ~FLSC_PB_DMA_BITS) | mode;
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*((flsc_regmap_p)sc->sc_fas)->hardbits = spec->portbits;
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#endif
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}
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/* Initialize DMA for transfer */
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int
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ptsc_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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int retval;
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retval = 0;
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#if 0
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printf("ptsc_setup_dma(sc, ptr = 0x%08x, len = 0x%08x, mode = 0x%08x)\n", (u_int)ptr, len, mode);
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#endif
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return(0);
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#if 0
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switch(mode) {
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case SFAS_DMA_READ:
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case SFAS_DMA_WRITE:
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flsc_set_dma_adr(sc, ptr);
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if (mode == SFAS_DMA_READ)
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flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_READ);
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else
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flsc_set_dma_mode(sc,FLSC_PB_ENABLE_DMA | FLSC_PB_DMA_WRITE);
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flsc_set_dma_tc(sc, len);
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break;
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case SFAS_DMA_CLEAR:
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default:
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flsc_set_dma_mode(sc, FLSC_PB_DISABLE_DMA);
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flsc_set_dma_adr(sc, 0);
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retval = (*sc->sc_fas->sfas_tc_high << 16) |
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(*sc->sc_fas->sfas_tc_mid << 8) |
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*sc->sc_fas->sfas_tc_low;
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flsc_set_dma_tc(sc, 0);
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break;
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}
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return(retval);
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#endif
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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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ptsc_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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ptsc_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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#if 0
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vm_offset_t pa, lastpa;
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char *ptr;
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int len, prelen, postlen, max_t, n;
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#endif
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#if 0
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printf("ptsc_build_dma_chain()\n");
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#endif
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return(0);
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#if 0
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if (l == 0)
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return(0);
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#define set_link(n, p, l, f)\
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do { chain[n].ptr = (p); chain[n].len = (l); chain[n++].flg = (f); } while(0)
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n = 0;
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if (l < 512)
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set_link(n, (vm_offset_t)p, l, SFAS_CHAIN_BUMP);
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else if (p >= (void *)0xFF000000) {
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while(l != 0) {
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len = ((l > sc->sc_bump_sz) ? sc->sc_bump_sz : l);
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set_link(n, (vm_offset_t)p, len, SFAS_CHAIN_BUMP);
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p += len;
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l -= len;
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}
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} else {
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ptr = p;
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len = l;
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pa = kvtop(ptr);
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prelen = ((int)ptr & 0x03);
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if (prelen) {
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prelen = 4-prelen;
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set_link(n, (vm_offset_t)ptr, prelen, SFAS_CHAIN_BUMP);
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ptr += prelen;
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len -= prelen;
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}
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lastpa = 0;
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while(len > 3) {
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pa = kvtop(ptr);
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max_t = NBPG - (pa & PGOFSET);
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if (max_t > len)
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max_t = len;
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max_t &= ~3;
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if (lastpa == pa)
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sc->sc_chain[n-1].len += max_t;
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else
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set_link(n, pa, max_t, SFAS_CHAIN_DMA);
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lastpa = pa+max_t;
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ptr += max_t;
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len -= max_t;
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}
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if (len)
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set_link(n, (vm_offset_t)ptr, len, SFAS_CHAIN_BUMP);
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}
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return(n);
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#endif
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}
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/* Turn on/off led */
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void
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ptsc_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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ptsc_regmap_p rp;
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rp = (ptsc_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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*rp->led = (sc->sc_led_status?1:0);
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}
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int
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ptsc_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 PTSC_POLL > 0
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xs->flags |= SCSI_POLL;
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|
#endif
|
|
#if 0
|
|
printf("Opcode %d\n", (int)(xs->cmd->opcode));
|
|
#endif
|
|
return(sfas_scsicmd(xs));
|
|
}
|