301 lines
8.5 KiB
C
301 lines
8.5 KiB
C
/* $NetBSD: sbc_obio.c,v 1.3 1997/04/07 05:56:28 scottr Exp $ */
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/*
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* Copyright (C) 1996,1997 Scott Reynolds. 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 Scott Reynolds for
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* the NetBSD Project.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/types.h>
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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/errno.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 <scsi/scsi_all.h>
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#include <scsi/scsi_debug.h>
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#include <scsi/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/cpu.h>
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#include <machine/viareg.h>
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#include "sbcreg.h"
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#include "sbcvar.h"
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/*
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* From Guide to the Macintosh Family Hardware, pp. 137-143
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* These are offsets from SCSIBase (see pmap_bootstrap.c)
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*/
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#define SBC_REG_OFS 0x10000
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#define SBC_DMA_OFS 0x12000
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#define SBC_HSK_OFS 0x06000
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#define SBC_DMA_OFS_PB500 0x06000
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#define SBC_REG_OFS_IIFX 0x08000 /* Just guessing... */
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#define SBC_DMA_OFS_IIFX 0x0c000
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#define SBC_HSK_OFS_IIFX 0x0e000
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#define SBC_REG_OFS_DUO2 0x00000
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#define SBC_DMA_OFS_DUO2 0x02000
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#define SBC_HSK_OFS_DUO2 0x04000
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static int sbc_obio_match __P((struct device *, struct cfdata *, void *));
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static void sbc_obio_attach __P((struct device *, struct device *, void *));
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void sbc_intr_enable __P((struct ncr5380_softc *));
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void sbc_intr_disable __P((struct ncr5380_softc *));
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void sbc_obio_clrintr __P((struct ncr5380_softc *));
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struct cfattach sbc_obio_ca = {
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sizeof(struct sbc_softc), sbc_obio_match, sbc_obio_attach
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};
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static int
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sbc_obio_match(parent, cf, args)
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struct device *parent;
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struct cfdata *cf;
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void *args;
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{
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switch (current_mac_model->machineid) {
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case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
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break;
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case MACH_MACPB210:
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case MACH_MACPB230:
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case MACH_MACPB250:
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case MACH_MACPB270:
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case MACH_MACPB280:
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case MACH_MACPB280C:
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if (cf->cf_unit == 1)
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return 1;
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/*FALLTHROUGH*/
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default:
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if (cf->cf_unit == 0 && mac68k_machine.scsi80)
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return 1;
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}
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return 0;
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}
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static void
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sbc_obio_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 sbc_softc *sc = (struct sbc_softc *) self;
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struct ncr5380_softc *ncr_sc = (struct ncr5380_softc *) sc;
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char bits[64];
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extern vm_offset_t SCSIBase;
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/* Pull in the options flags. */
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sc->sc_options = ((ncr_sc->sc_dev.dv_cfdata->cf_flags | sbc_options)
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& SBC_OPTIONS_MASK);
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/*
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* Set up offsets to 5380 registers and GLUE I/O space, and turn
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* off options we know we can't support on certain models.
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*/
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switch (current_mac_model->machineid) {
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case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
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sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS_IIFX);
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sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS_IIFX);
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sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS_IIFX);
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sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
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break;
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case MACH_MACPB500:
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sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
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sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS); /*??*/
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sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS_PB500);
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sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
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break;
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case MACH_MACPB210:
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case MACH_MACPB230:
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case MACH_MACPB250:
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case MACH_MACPB270:
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case MACH_MACPB280:
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case MACH_MACPB280C:
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if (ncr_sc->sc_dev.dv_unit == 1) {
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sc->sc_regs = (struct sbc_regs *)(0xfee00000 + SBC_REG_OFS_DUO2);
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sc->sc_drq_addr = (vm_offset_t)(0xfee00000 + SBC_HSK_OFS_DUO2);
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sc->sc_nodrq_addr = (vm_offset_t)(0xfee00000 + SBC_DMA_OFS_DUO2);
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break;
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}
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/*FALLTHROUGH*/
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default:
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sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
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sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS);
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sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS);
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break;
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}
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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.channel = SCSI_CHANNEL_ONLY_ONE;
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ncr_sc->sc_link.adapter_softc = sc;
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ncr_sc->sc_link.adapter_target = 7;
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ncr_sc->sc_link.adapter = &sbc_ops;
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ncr_sc->sc_link.device = &sbc_dev;
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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 = &sc->sc_regs->sci_pr0.sci_reg;
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ncr_sc->sci_r1 = &sc->sc_regs->sci_pr1.sci_reg;
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ncr_sc->sci_r2 = &sc->sc_regs->sci_pr2.sci_reg;
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ncr_sc->sci_r3 = &sc->sc_regs->sci_pr3.sci_reg;
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ncr_sc->sci_r4 = &sc->sc_regs->sci_pr4.sci_reg;
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ncr_sc->sci_r5 = &sc->sc_regs->sci_pr5.sci_reg;
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ncr_sc->sci_r6 = &sc->sc_regs->sci_pr6.sci_reg;
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ncr_sc->sci_r7 = &sc->sc_regs->sci_pr7.sci_reg;
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/*
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* MD function pointers used by the MI code.
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*/
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if (sc->sc_options & SBC_PDMA) {
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ncr_sc->sc_pio_out = sbc_pdma_out;
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ncr_sc->sc_pio_in = sbc_pdma_in;
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} else {
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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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}
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ncr_sc->sc_dma_alloc = NULL;
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ncr_sc->sc_dma_free = NULL;
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ncr_sc->sc_dma_poll = NULL;
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ncr_sc->sc_intr_on = NULL;
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ncr_sc->sc_intr_off = NULL;
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ncr_sc->sc_dma_setup = NULL;
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ncr_sc->sc_dma_start = NULL;
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ncr_sc->sc_dma_eop = NULL;
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ncr_sc->sc_dma_stop = NULL;
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ncr_sc->sc_flags = 0;
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ncr_sc->sc_min_dma_len = MIN_DMA_LEN;
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if (sc->sc_options & SBC_INTR) {
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ncr_sc->sc_dma_alloc = sbc_dma_alloc;
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ncr_sc->sc_dma_free = sbc_dma_free;
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ncr_sc->sc_dma_poll = sbc_dma_poll;
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ncr_sc->sc_dma_setup = sbc_dma_setup;
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ncr_sc->sc_dma_start = sbc_dma_start;
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ncr_sc->sc_dma_eop = sbc_dma_eop;
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ncr_sc->sc_dma_stop = sbc_dma_stop;
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via2_register_irq(VIA2_SCSIDRQ, sbc_drq_intr, ncr_sc);
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}
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via2_register_irq(VIA2_SCSIIRQ, sbc_irq_intr, ncr_sc);
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sc->sc_clrintr = sbc_obio_clrintr;
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if ((sc->sc_options & SBC_RESELECT) == 0)
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ncr_sc->sc_no_disconnect = 0xff;
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if (sc->sc_options)
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printf(": options=%s", bitmask_snprintf(sc->sc_options,
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SBC_OPTIONS_BITS, bits, sizeof(bits)));
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printf("\n");
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/* Enable SCSI interrupts through VIA2 */
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sbc_intr_enable(ncr_sc);
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#ifdef SBC_DEBUG
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if (sbc_debug)
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printf("%s: softc=%p regs=%p\n", ncr_sc->sc_dev.dv_xname,
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sc, sc->sc_regs);
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ncr_sc->sc_link.flags |= sbc_link_flags;
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#endif
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/*
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* Initialize the SCSI controller 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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config_found(self, &(ncr_sc->sc_link), scsiprint);
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}
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/*
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* Interrupt support routines.
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*/
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void
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sbc_intr_enable(ncr_sc)
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struct ncr5380_softc *ncr_sc;
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{
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struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
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int s, flags;
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flags = V2IF_SCSIIRQ;
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if (sc->sc_options & SBC_INTR)
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flags |= V2IF_SCSIDRQ;
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s = splhigh();
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if (VIA2 == VIA2OFF)
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via2_reg(vIER) = 0x80 | flags;
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else
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via2_reg(rIER) = 0x80 | flags;
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splx(s);
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}
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void
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sbc_intr_disable(ncr_sc)
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struct ncr5380_softc *ncr_sc;
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{
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struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
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int s, flags;
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flags = V2IF_SCSIIRQ;
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if (sc->sc_options & SBC_INTR)
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flags |= V2IF_SCSIDRQ;
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s = splhigh();
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if (VIA2 == VIA2OFF)
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via2_reg(vIER) = flags;
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else
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via2_reg(rIER) = flags;
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splx(s);
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}
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void
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sbc_obio_clrintr(ncr_sc)
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struct ncr5380_softc *ncr_sc;
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{
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struct sbc_softc *sc = (struct sbc_softc *)ncr_sc;
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int flags;
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flags = V2IF_SCSIIRQ;
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if (sc->sc_options & SBC_INTR)
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flags |= V2IF_SCSIDRQ;
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if (VIA2 == VIA2OFF)
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via2_reg(vIFR) = 0x80 | flags;
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else
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via2_reg(rIFR) = 0x80 | flags;
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}
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