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NetBSD/sys/arch/mac68k/dev/sbc_obio.c

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/* $NetBSD: sbc_obio.c,v 1.1 1997/03/01 20:18:59 scottr Exp $ */
/*
* Copyright (C) 1996,1997 Scott Reynolds. All rights reserved.
*
* 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 Scott Reynolds for
* the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <scsi/scsi_all.h>
#include <scsi/scsi_debug.h>
#include <scsi/scsiconf.h>
#include <dev/ic/ncr5380reg.h>
#include <dev/ic/ncr5380var.h>
#include <machine/cpu.h>
#include <machine/viareg.h>
#include "sbcreg.h"
#include "sbcvar.h"
/*
* From Guide to the Macintosh Family Hardware, pp. 137-143
* These are offsets from SCSIBase (see pmap_bootstrap.c)
*/
#define SBC_REG_OFS 0x10000
#define SBC_DMA_OFS 0x12000
#define SBC_HSK_OFS 0x06000
#define SBC_DMA_OFS_PB500 0x06000
#define SBC_REG_OFS_IIFX 0x08000 /* Just guessing... */
#define SBC_DMA_OFS_IIFX 0x0c000
#define SBC_HSK_OFS_IIFX 0x0e000
#define SBC_REG_OFS_DUO2 0x00000
#define SBC_DMA_OFS_DUO2 0x02000
#define SBC_HSK_OFS_DUO2 0x04000
static int sbc_obio_match __P((struct device *, struct cfdata *, void *));
static void sbc_obio_attach __P((struct device *, struct device *, void *));
void sbc_intr_enable __P((struct ncr5380_softc *));
void sbc_intr_disable __P((struct ncr5380_softc *));
void sbc_obio_clrintr __P((struct ncr5380_softc *));
struct cfattach sbc_obio_ca = {
sizeof(struct sbc_softc), sbc_obio_match, sbc_obio_attach
};
static int
sbc_obio_match(parent, cf, args)
struct device *parent;
struct cfdata *cf;
void *args;
{
switch (current_mac_model->machineid) {
case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
break;
case MACH_MACPB210:
case MACH_MACPB230:
case MACH_MACPB250:
case MACH_MACPB270:
case MACH_MACPB280:
case MACH_MACPB280C:
if (cf->cf_unit == 1)
return 1;
/*FALLTHROUGH*/
default:
if (cf->cf_unit == 0 && mac68k_machine.scsi80)
return 1;
}
return 0;
}
static void
sbc_obio_attach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct sbc_softc *sc = (struct sbc_softc *) self;
struct ncr5380_softc *ncr_sc = (struct ncr5380_softc *) sc;
char bits[64];
extern vm_offset_t SCSIBase;
/* Pull in the options flags. */
sc->sc_options = ((ncr_sc->sc_dev.dv_cfdata->cf_flags | sbc_options)
& SBC_OPTIONS_MASK);
/*
* Set up offsets to 5380 registers and GLUE I/O space, and turn
* off options we know we can't support on certain models.
*/
switch (current_mac_model->machineid) {
case MACH_MACIIFX: /* Note: the IIfx isn't (yet) supported. */
sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS_IIFX);
sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS_IIFX);
sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS_IIFX);
sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
break;
case MACH_MACPB500:
sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS); /*??*/
sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS_PB500);
sc->sc_options &= ~(SBC_INTR | SBC_RESELECT);
break;
case MACH_MACPB210:
case MACH_MACPB230:
case MACH_MACPB250:
case MACH_MACPB270:
case MACH_MACPB280:
case MACH_MACPB280C:
if (ncr_sc->sc_dev.dv_unit == 1) {
sc->sc_regs = (struct sbc_regs *)(0xfee00000 + SBC_REG_OFS_DUO2);
sc->sc_drq_addr = (vm_offset_t)(0xfee00000 + SBC_HSK_OFS_DUO2);
sc->sc_nodrq_addr = (vm_offset_t)(0xfee00000 + SBC_DMA_OFS_DUO2);
break;
}
/*FALLTHROUGH*/
default:
sc->sc_regs = (struct sbc_regs *)(SCSIBase + SBC_REG_OFS);
sc->sc_drq_addr = (vm_offset_t)(SCSIBase + SBC_HSK_OFS);
sc->sc_nodrq_addr = (vm_offset_t)(SCSIBase + SBC_DMA_OFS);
break;
}
/*
* Fill in the prototype scsi_link.
*/
ncr_sc->sc_link.channel = SCSI_CHANNEL_ONLY_ONE;
ncr_sc->sc_link.adapter_softc = sc;
ncr_sc->sc_link.adapter_target = 7;
ncr_sc->sc_link.adapter = &sbc_ops;
ncr_sc->sc_link.device = &sbc_dev;
/*
* Initialize fields used by the MI code
*/
ncr_sc->sci_r0 = &sc->sc_regs->sci_pr0.sci_reg;
ncr_sc->sci_r1 = &sc->sc_regs->sci_pr1.sci_reg;
ncr_sc->sci_r2 = &sc->sc_regs->sci_pr2.sci_reg;
ncr_sc->sci_r3 = &sc->sc_regs->sci_pr3.sci_reg;
ncr_sc->sci_r4 = &sc->sc_regs->sci_pr4.sci_reg;
ncr_sc->sci_r5 = &sc->sc_regs->sci_pr5.sci_reg;
ncr_sc->sci_r6 = &sc->sc_regs->sci_pr6.sci_reg;
ncr_sc->sci_r7 = &sc->sc_regs->sci_pr7.sci_reg;
/*
* MD function pointers used by the MI code.
*/
if (sc->sc_options & SBC_PDMA) {
ncr_sc->sc_pio_out = sbc_pdma_out;
ncr_sc->sc_pio_in = sbc_pdma_in;
} else {
ncr_sc->sc_pio_out = ncr5380_pio_out;
ncr_sc->sc_pio_in = ncr5380_pio_in;
}
ncr_sc->sc_dma_alloc = NULL;
ncr_sc->sc_dma_free = NULL;
ncr_sc->sc_dma_poll = NULL;
ncr_sc->sc_intr_on = NULL;
ncr_sc->sc_intr_off = NULL;
ncr_sc->sc_dma_setup = NULL;
ncr_sc->sc_dma_start = NULL;
ncr_sc->sc_dma_eop = NULL;
ncr_sc->sc_dma_stop = NULL;
ncr_sc->sc_flags = 0;
ncr_sc->sc_min_dma_len = MIN_DMA_LEN;
if (sc->sc_options & SBC_INTR) {
ncr_sc->sc_dma_alloc = sbc_dma_alloc;
ncr_sc->sc_dma_free = sbc_dma_free;
ncr_sc->sc_dma_poll = sbc_dma_poll;
ncr_sc->sc_dma_setup = sbc_dma_setup;
ncr_sc->sc_dma_start = sbc_dma_start;
ncr_sc->sc_dma_eop = sbc_dma_eop;
ncr_sc->sc_dma_stop = sbc_dma_stop;
via2_register_irq(VIA2_SCSIDRQ, sbc_drq_intr, ncr_sc);
via2_register_irq(VIA2_SCSIIRQ, sbc_irq_intr, ncr_sc);
} else
ncr_sc->sc_flags |= NCR5380_FORCE_POLLING;
if ((sc->sc_options & SBC_RESELECT) == 0)
ncr_sc->sc_no_disconnect = 0xff;
if (sc->sc_options & SBC_INTR)
sc->sc_clrintr = sbc_obio_clrintr;
else
sc->sc_clrintr = NULL;
if (sc->sc_options)
printf(": options=%s", bitmask_snprintf(sc->sc_options,
SBC_OPTIONS_BITS, bits, sizeof(bits)));
printf("\n");
/* Now enable SCSI interrupts through VIA2, if appropriate */
if (sc->sc_options & SBC_INTR)
sbc_intr_enable(ncr_sc);
#ifdef SBC_DEBUG
if (sbc_debug)
printf("%s: softc=%p regs=%p\n", ncr_sc->sc_dev.dv_xname,
sc, sc->sc_regs);
ncr_sc->sc_link.flags |= sbc_link_flags;
#endif
/*
* Initialize the SCSI controller itself.
*/
ncr5380_init(ncr_sc);
ncr5380_reset_scsibus(ncr_sc);
config_found(self, &(ncr_sc->sc_link), scsiprint);
}
/*
* Interrupt support routines.
*/
void
sbc_intr_enable(ncr_sc)
struct ncr5380_softc *ncr_sc;
{
int s;
s = splhigh();
if (VIA2 == VIA2OFF)
via2_reg(vIER) = 0x80 | (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
else
via2_reg(rIER) = 0x80 | (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
splx(s);
}
void
sbc_intr_disable(ncr_sc)
struct ncr5380_softc *ncr_sc;
{
int s;
s = splhigh();
if (VIA2 == VIA2OFF)
via2_reg(vIER) = (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
else
via2_reg(rIER) = (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
splx(s);
}
void
sbc_obio_clrintr(ncr_sc)
struct ncr5380_softc *ncr_sc;
{
if (VIA2 == VIA2OFF)
via2_reg(vIFR) = 0x80 | (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
else
via2_reg(rIFR) = 0x80 | (V2IF_SCSIIRQ | V2IF_SCSIDRQ);
}
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