228 lines
6.4 KiB
C
228 lines
6.4 KiB
C
/* $NetBSD: ncr.c,v 1.17 1999/02/02 18:37:21 ragge Exp $ */
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/*-
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* Copyright (c) 1996 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 Adam Glass, David Jones, Gordon W. Ross, and Jens A. Nilsson.
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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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* This file contains the machine-dependent parts of the NCR-5380
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* controller. The machine-independent parts are in ncr5380sbc.c.
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*
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* Note: Only PIO transfers for now which implicates very bad
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* performance. DMA support will come soon.
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*
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* Jens A. Nilsson.
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*
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* Credits:
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*
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* This code is based on arch/sun3/dev/si*
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* Written by David Jones, Gordon Ross, and Adam Glass.
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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/errno.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/proc.h>
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#include <sys/user.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/scsipi_debug.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/vsbus.h>
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#include <machine/bus.h>
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#include "ioconf.h"
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#define MIN_DMA_LEN 128
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#ifdef notyet
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struct si_dma_handle {
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int dh_flags;
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#define SIDH_BUSY 1
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#define SIDH_OUT 2
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u_char *dh_addr;
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};
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#endif
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struct si_softc {
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struct ncr5380_softc ncr_sc;
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};
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/* This is copied from julian's bt driver */
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/* "so we have a default dev struct for our link struct." */
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static struct scsipi_device si_dev = {
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NULL, /* Use default error handler. */
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NULL, /* Use default start handler. */
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NULL, /* Use default async handler. */
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NULL, /* Use default "done" routine. */
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};
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static caddr_t sca_regs;
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static int si_match(struct device *, struct cfdata *, void *);
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static void si_attach(struct device *, struct device *, void *);
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static void si_minphys(struct buf *);
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static void si_intr(int);
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void dk_establish(void);
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struct cfattach ncr_ca = {
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sizeof(struct si_softc), si_match, si_attach
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};
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void
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dk_establish(void)
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{
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#if 0
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printf("faking dk_establish()...\n");
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#endif
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}
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static int
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si_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 vsbus_attach_args *va = aux;
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if (sca_regs == 0)
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sca_regs = (caddr_t)vax_map_physmem(SCA_REGS, 1);
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if (va->va_type == 0x200C0080)
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return 1;
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return 0;
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}
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static void
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si_attach(parent, self, args)
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struct device *parent, *self;
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void *args;
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{
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struct si_softc *sc = (struct si_softc *) self;
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struct ncr5380_softc *ncr_sc = &sc->ncr_sc;
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#ifdef notyet
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struct confargs *ca = args;
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#endif
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printf("\n");
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/*
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* MD function pointers used by the MI code.
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*/
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ncr_sc->sc_pio_out = ncr5380_pio_out;
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ncr_sc->sc_pio_in = ncr5380_pio_in;
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#ifdef notyet
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ncr_sc->sc_dma_alloc = si_dma_alloc;
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ncr_sc->sc_dma_free = si_dma_free;
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ncr_sc->sc_dma_setup = si_dma_setup;
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ncr_sc->sc_dma_start = si_dma_start;
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ncr_sc->sc_dma_poll = si_dma_poll;
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ncr_sc->sc_dma_eop = si_dma_eop;
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ncr_sc->sc_dma_stop = si_dma_stop;
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#endif
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ncr_sc->sc_intr_on = NULL /*si_intr_on*/;
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ncr_sc->sc_intr_off = NULL /*si_intr_off*/;
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ncr_sc->sc_dma_alloc = NULL;
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ncr_sc->sc_min_dma_len = MIN_DMA_LEN;
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/*
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* Fill in the adapter.
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*/
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ncr_sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd;
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ncr_sc->sc_adapter.scsipi_minphys = si_minphys;
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/*
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* Fill in the prototype scsi_link.
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*/
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ncr_sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
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ncr_sc->sc_link.adapter_softc = sc;
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ncr_sc->sc_link.scsipi_scsi.adapter_target = 7;
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ncr_sc->sc_link.adapter = &ncr_sc->sc_adapter;
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ncr_sc->sc_link.device = &si_dev;
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ncr_sc->sc_link.type = BUS_SCSI;
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/*
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* Initialize fields used by the MI code.
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*/
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ncr_sc->sci_r0 = sca_regs + 0x80; /* CUR_DATA/OUT_DATA (rw) */
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ncr_sc->sci_r1 = sca_regs + 0x84; /* INI_CMD (rw) */
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ncr_sc->sci_r2 = sca_regs + 0x88; /* MODE (rw) */
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ncr_sc->sci_r3 = sca_regs + 0x8c; /* TAR_CMD (rw) */
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ncr_sc->sci_r4 = sca_regs + 0x90; /* CUR_STAT/SEL_ENA (rw) */
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ncr_sc->sci_r5 = sca_regs + 0x94; /* STATUS/DMA_SEND (rw) */
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ncr_sc->sci_r6 = sca_regs + 0x98; /* IN_DATA/DMA_TRCV (rw) */
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ncr_sc->sci_r7 = sca_regs + 0x9c; /* RESET/DMA_IRCV (rw) */
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/*
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* Initialize si board itself.
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*/
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ncr5380_init(ncr_sc);
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ncr5380_reset_scsibus(ncr_sc);
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vsbus_intr_attach(1, si_intr, 0); /* 0 is arg for si_intr */
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vsbus_intr_enable(1);
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config_found(&(ncr_sc->sc_dev), &(ncr_sc->sc_link), scsiprint);
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}
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static void
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si_minphys(struct buf *bp)
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{
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#if 0
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printf("minphys: blkno=%d, bcount=%d, data=0x%x, flags=%x\n",
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bp->b_blkno, (int) bp->b_bcount,
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(unsigned) bp->b_data, (unsigned) bp->b_flags);
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#endif
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}
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static void
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si_intr(int arg)
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{
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#if 0
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printf("si_intr: arg=%d\n", arg);
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#endif
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ncr5380_intr(ncr_cd.cd_devs[arg]);
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}
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