NetBSD/sys/arch/vax/vsa/ncr.c

224 lines
6.3 KiB
C

/* $NetBSD: ncr.c,v 1.16 1998/12/06 13:55:09 ragge Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Adam Glass, David Jones, Gordon W. Ross, and Jens A. Nilsson.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This file contains the machine-dependent parts of the NCR-5380
* controller. The machine-independent parts are in ncr5380sbc.c.
*
* Note: Only PIO transfers for now which implicates very bad
* performance. DMA support will come soon.
*
* Jens A. Nilsson.
*
* Credits:
*
* This code is based on arch/sun3/dev/si*
* Written by David Jones, Gordon Ross, and Adam Glass.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsipi_debug.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ic/ncr5380reg.h>
#include <dev/ic/ncr5380var.h>
#include <machine/vsbus.h>
#include <machine/bus.h>
#include "ioconf.h"
#define MIN_DMA_LEN 128
#ifdef notyet
struct si_dma_handle {
int dh_flags;
#define SIDH_BUSY 1
#define SIDH_OUT 2
u_char *dh_addr;
};
#endif
struct si_softc {
struct ncr5380_softc ncr_sc;
};
/* This is copied from julian's bt driver */
/* "so we have a default dev struct for our link struct." */
static struct scsipi_device si_dev = {
NULL, /* Use default error handler. */
NULL, /* Use default start handler. */
NULL, /* Use default async handler. */
NULL, /* Use default "done" routine. */
};
static int si_match(struct device *, struct cfdata *, void *);
static void si_attach(struct device *, struct device *, void *);
static void si_minphys(struct buf *);
static void si_intr(int);
void dk_establish(void);
struct cfattach ncr_ca = {
sizeof(struct si_softc), si_match, si_attach
};
void
dk_establish(void)
{
#if 0
printf("faking dk_establish()...\n");
#endif
}
static int
si_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct vsbus_attach_args *va = aux;
if (va->va_type == 0x200C0080)
return 1;
return 0;
}
static void
si_attach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct si_softc *sc = (struct si_softc *) self;
struct ncr5380_softc *ncr_sc = &sc->ncr_sc;
#ifdef notyet
struct confargs *ca = args;
#endif
printf("\n");
/*
* MD function pointers used by the MI code.
*/
ncr_sc->sc_pio_out = ncr5380_pio_out;
ncr_sc->sc_pio_in = ncr5380_pio_in;
#ifdef notyet
ncr_sc->sc_dma_alloc = si_dma_alloc;
ncr_sc->sc_dma_free = si_dma_free;
ncr_sc->sc_dma_setup = si_dma_setup;
ncr_sc->sc_dma_start = si_dma_start;
ncr_sc->sc_dma_poll = si_dma_poll;
ncr_sc->sc_dma_eop = si_dma_eop;
ncr_sc->sc_dma_stop = si_dma_stop;
#endif
ncr_sc->sc_intr_on = NULL /*si_intr_on*/;
ncr_sc->sc_intr_off = NULL /*si_intr_off*/;
ncr_sc->sc_dma_alloc = NULL;
ncr_sc->sc_min_dma_len = MIN_DMA_LEN;
/*
* Fill in the adapter.
*/
ncr_sc->sc_adapter.scsipi_cmd = ncr5380_scsi_cmd;
ncr_sc->sc_adapter.scsipi_minphys = si_minphys;
/*
* Fill in the prototype scsi_link.
*/
ncr_sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
ncr_sc->sc_link.adapter_softc = sc;
ncr_sc->sc_link.scsipi_scsi.adapter_target = 7;
ncr_sc->sc_link.adapter = &ncr_sc->sc_adapter;
ncr_sc->sc_link.device = &si_dev;
ncr_sc->sc_link.type = BUS_SCSI;
/*
* Initialize fields used by the MI code.
*/
ncr_sc->sci_r0 = sca_regs + 0x80; /* CUR_DATA/OUT_DATA (rw) */
ncr_sc->sci_r1 = sca_regs + 0x84; /* INI_CMD (rw) */
ncr_sc->sci_r2 = sca_regs + 0x88; /* MODE (rw) */
ncr_sc->sci_r3 = sca_regs + 0x8c; /* TAR_CMD (rw) */
ncr_sc->sci_r4 = sca_regs + 0x90; /* CUR_STAT/SEL_ENA (rw) */
ncr_sc->sci_r5 = sca_regs + 0x94; /* STATUS/DMA_SEND (rw) */
ncr_sc->sci_r6 = sca_regs + 0x98; /* IN_DATA/DMA_TRCV (rw) */
ncr_sc->sci_r7 = sca_regs + 0x9c; /* RESET/DMA_IRCV (rw) */
/*
* Initialize si board itself.
*/
ncr5380_init(ncr_sc);
ncr5380_reset_scsibus(ncr_sc);
vsbus_intr_attach(1, si_intr, 0); /* 0 is arg for si_intr */
vsbus_intr_enable(1);
config_found(&(ncr_sc->sc_dev), &(ncr_sc->sc_link), scsiprint);
}
static void
si_minphys(struct buf *bp)
{
#if 0
printf("minphys: blkno=%d, bcount=%d, data=0x%x, flags=%x\n",
bp->b_blkno, (int) bp->b_bcount,
(unsigned) bp->b_data, (unsigned) bp->b_flags);
#endif
}
static void
si_intr(int arg)
{
#if 0
printf("si_intr: arg=%d\n", arg);
#endif
ncr5380_intr(ncr_cd.cd_devs[arg]);
}