232 lines
6.9 KiB
C
232 lines
6.9 KiB
C
/* $NetBSD: csa.c,v 1.7 2003/07/14 22:48:26 lukem 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 Mark Brinicombe of Causality Limited.
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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 1 driver using the generic NCR5380 driver
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: csa.c,v 1.7 2003/07/14 22:48:26 lukem Exp $");
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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 <sys/buf.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 <dev/ic/ncr5380reg.h>
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#include <dev/ic/ncr5380var.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 <dev/podulebus/podules.h>
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#include <dev/podulebus/powerromreg.h>
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#define CSA_NCR5380_OFFSET 0x2100
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#define CSA_CTRL_OFFSET 0x2000 - 2308
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#define CSA_DIRWRITE 0x02
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#define CSA_DIRREAD 0x00
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#define CSA_16BITS 0x00
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#define CSA_8BITS 0x10
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#define CSA_XXX 0x40
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#define CSA_DATA_OFFSET 0x2000
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#define CSA_INTR_OFFSET 0x2000
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#define CSA_INTR_MASK 0x80
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#define CSA_STAT_OFFSET 0x2004
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#define CSA_STAT_DRQ 0x40
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#define CSA_STAT_END 0x80
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void csa_attach __P((struct device *, struct device *, void *));
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int csa_match __P((struct device *, struct cfdata *, void *));
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/*
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* Cumana SCSI 1 softc structure.
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*
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* Contains the generic ncr5380 device node, podule information and global information
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* required by the driver.
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*/
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struct csa_softc {
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struct ncr5380_softc sc_ncr5380;
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void *sc_ih;
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struct evcnt sc_intrcnt;
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int sc_podule_number;
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podule_t *sc_podule;
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volatile u_char *sc_irqstatus;
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u_char sc_irqmask;
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volatile u_char *sc_ctrl;
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volatile u_char *sc_status;
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volatile u_char *sc_data;
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};
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CFATTACH_DECL(csa, sizeof(struct csa_softc),
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csa_match, csa_attach, NULL, NULL);
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int csa_intr __P((void *arg));
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/*
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* Card probe function
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*
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* Just match the manufacturer and podule ID's
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*/
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int
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csa_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct podule_attach_args *pa = aux;
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if (pa->pa_product == PODULE_CUMANA_SCSI1)
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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_SCSI1_8 ||
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podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI1_16))
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return 1;
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return 0;
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}
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/*
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* Card attach function
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*
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*/
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void
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csa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct csa_softc *sc = (struct csa_softc *)self;
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struct podule_attach_args *pa = aux;
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u_char *iobase;
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char hi_option[sizeof(sc->sc_ncr5380.sc_dev.dv_xname) + 8];
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/* Note the podule number and validate */
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if (pa->pa_podule_number == -1)
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panic("Podule has disappeared !");
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sc->sc_podule_number = pa->pa_podule_number;
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sc->sc_podule = pa->pa_podule;
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podules[sc->sc_podule_number].attached = 1;
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sc->sc_ncr5380.sc_flags |= NCR5380_FORCE_POLLING;
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sc->sc_ncr5380.sc_min_dma_len = 0;
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sc->sc_ncr5380.sc_no_disconnect = 0x00;
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sc->sc_ncr5380.sc_parity_disable = 0x00;
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sc->sc_ncr5380.sc_dma_alloc = NULL;
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sc->sc_ncr5380.sc_dma_free = NULL;
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sc->sc_ncr5380.sc_dma_poll = NULL;
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sc->sc_ncr5380.sc_dma_setup = NULL;
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sc->sc_ncr5380.sc_dma_start = NULL;
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sc->sc_ncr5380.sc_dma_eop = NULL;
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sc->sc_ncr5380.sc_dma_stop = NULL;
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sc->sc_ncr5380.sc_intr_on = NULL;
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sc->sc_ncr5380.sc_intr_off = NULL;
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iobase = (u_char *)pa->pa_podule->slow_base + CSA_NCR5380_OFFSET;
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sc->sc_ncr5380.sci_r0 = iobase + 0;
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sc->sc_ncr5380.sci_r1 = iobase + 4;
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sc->sc_ncr5380.sci_r2 = iobase + 8;
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sc->sc_ncr5380.sci_r3 = iobase + 12;
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sc->sc_ncr5380.sci_r4 = iobase + 16;
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sc->sc_ncr5380.sci_r5 = iobase + 20;
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sc->sc_ncr5380.sci_r6 = iobase + 24;
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sc->sc_ncr5380.sci_r7 = iobase + 28;
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sc->sc_ncr5380.sc_rev = NCR_VARIANT_NCR5380;
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sc->sc_ctrl = (u_char *)pa->pa_podule->slow_base + CSA_CTRL_OFFSET;
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sc->sc_status = (u_char *)pa->pa_podule->slow_base + CSA_STAT_OFFSET;
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sc->sc_data = (u_char *)pa->pa_podule->slow_base + CSA_DATA_OFFSET;
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sc->sc_ncr5380.sc_pio_in = ncr5380_pio_in;
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sc->sc_ncr5380.sc_pio_out = ncr5380_pio_out;
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/* Provide an override for the host id */
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sc->sc_ncr5380.sc_channel.chan_id = 7;
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sprintf(hi_option, "%s.hostid", sc->sc_ncr5380.sc_dev.dv_xname);
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(void)get_bootconf_option(boot_args, hi_option,
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BOOTOPT_TYPE_INT, &sc->sc_ncr5380.sc_channel.chan_id);
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sc->sc_ncr5380.sc_adapter.adapt_minphys = minphys;
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printf(": host=%d, using 8 bit PIO",
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sc->sc_ncr5380.sc_channel.chan_id);
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sc->sc_irqstatus = (u_char *)pa->pa_podule->slow_base + CSA_INTR_OFFSET;
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sc->sc_irqmask = CSA_INTR_MASK;
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evcnt_attach_dynamic(&sc->sc_intrcnt, EVCNT_TYPE_INTR, NULL,
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self->dv_xname, "intr");
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sc->sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, csa_intr, sc,
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&sc->sc_intrcnt);
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if (sc->sc_ih == NULL)
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sc->sc_ncr5380.sc_flags |= NCR5380_FORCE_POLLING;
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if (sc->sc_ncr5380.sc_flags & NCR5380_FORCE_POLLING)
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printf(", polling");
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printf("\n");
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*sc->sc_ctrl = 0;
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ncr5380_attach(&sc->sc_ncr5380);
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}
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int
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csa_intr(arg)
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void *arg;
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{
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struct csa_softc *sc = arg;
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if ((*sc->sc_irqstatus) & sc->sc_irqmask)
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(void)ncr5380_intr(&sc->sc_ncr5380);
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return(0);
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}
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