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

255 lines
6.4 KiB
C

/* $NetBSD: vsbus.c,v 1.12 1998/08/10 14:47:17 ragge Exp $ */
/*
* Copyright (c) 1996 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* This code is derived from software contributed to Ludd by Bertram Barth.
*
* 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 at Ludd, University of
* Lule}, Sweden and its contributors.
* 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/param.h>
#include <sys/systm.h>
#include <sys/buf.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/map.h>
#include <sys/device.h>
#include <sys/dkstat.h>
#include <sys/disklabel.h>
#include <sys/syslog.h>
#include <sys/stat.h>
#include <machine/pte.h>
#include <machine/sid.h>
#include <machine/scb.h>
#include <machine/cpu.h>
#include <machine/trap.h>
#include <machine/nexus.h>
#include <machine/uvax.h>
#include <machine/ka410.h>
#include <machine/ka420.h>
#include <machine/ka43.h>
#include <machine/vsbus.h>
#include "ioconf.h"
int vsbus_match __P((struct device *, struct cfdata *, void *));
void vsbus_attach __P((struct device *, struct device *, void *));
int vsbus_print __P((void *, const char *));
void ka410_attach __P((struct device *, struct device *, void *));
void ka43_attach __P((struct device *, struct device *, void *));
#define VSBUS_MAXINTR 8
struct vsbus_softc {
struct device sc_dev;
struct ivec_dsp sc_dsp[VSBUS_MAXINTR];
};
struct cfattach vsbus_ca = {
sizeof(struct vsbus_softc), vsbus_match, vsbus_attach
};
void vsbus_intr_setup __P((struct vsbus_softc *));
#define VSBUS_MAXDEVS 8
int
vsbus_print(aux, name)
void *aux;
const char *name;
{
struct vsbus_attach_args *va = aux;
if (name) {
printf ("device %d at %s", va->va_type, name);
return (UNSUPP);
}
return (UNCONF);
}
int
vsbus_match(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct bp_conf *bp = aux;
if (strcmp(bp->type, "vsbus"))
return 0;
/*
* on machines which can have it, the vsbus is always there
*/
if ((vax_bustype & VAX_VSBUS) == 0)
return (0);
return (1);
}
void
vsbus_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct vsbus_softc *sc = (void *)self;
struct vsbus_attach_args va;
printf("\n");
/*
* first setup interrupt-table, so that devices can register
* their interrupt-routines...
*/
vsbus_intr_setup(sc);
/*
* now check for all possible devices on this "bus"
*/
/* Always have network */
va.va_type = inr_ni;
config_found(self, &va, vsbus_print);
/* Always have serial line */
va.va_type = inr_sr;
config_found(self, &va, vsbus_print);
/* If sm_addr is set, a monochrome graphics adapter is found */
/* XXX ckeck for color adapter */
if (sm_addr) {
va.va_type = inr_vf;
config_found(self, &va, vsbus_print);
}
#ifdef notyet
/*
* Check for mass storage devices. This is tricky :-/
* VS2K always has both MFM and SCSI.
* VS3100 has either MFM/SCSI, SCSI/SCSI or neither of them.
* The device registers are at different places for them all.
*/
if (vax_boardtype == VAX_BTYP_410) {
va.va_type = inr_dc;
config_found(self, &va, vsbus_print);
va.va_type = 0x200C0080;
config_found(self, &va, vsbus_print);
return;
}
if ((vax_confdata & KA420_CFG_STCMSK) == KA420_CFG_NONE)
return; /* No ctlrs */
/* Ok, we have at least one scsi ctlr */
va.va_type = 0x200C0080;
config_found(self, &va, vsbus_print);
/* The last one is MFM or SCSI */
if ((vax_confdata & KA420_CFG_STCMSK) == KA420_CFG_RB) {
va.va_type = inr_dc;
config_found(self, &va, vsbus_print);
} else {
va.va_type = 0x200C0180;
config_found(self, &va, vsbus_print);
}
#endif
}
static void stray __P((int));
static void
stray(arg)
int arg;
{
printf("stray interrupt nr %d.\n", arg);
}
static int inrs[] = {IVEC_DC, IVEC_SC, IVEC_VS, IVEC_VF,
IVEC_NS, IVEC_NP, IVEC_ST, IVEC_SR};
void
vsbus_intr_setup(sc)
struct vsbus_softc *sc;
{
extern struct ivec_dsp idsptch; /* subr.s */
void **scbP = (void*)scb;
int i;
vs_cpu->vc_intmsk = 0; /* disable all interrupts */
vs_cpu->vc_intclr = 0xFF; /* clear all old interrupts */
for (i = 0; i < VSBUS_MAXINTR; i++) {
bcopy(&idsptch, &sc->sc_dsp[i], sizeof(struct ivec_dsp));
sc->sc_dsp[i].hoppaddr = stray;
sc->sc_dsp[i].pushlarg = i;
scbP[inrs[i]/4] = &sc->sc_dsp[i];
}
}
void
vsbus_intr_attach(nr, func, arg)
int nr;
void (*func)(int);
int arg;
{
struct vsbus_softc *sc = vsbus_cd.cd_devs[0];
sc->sc_dsp[nr].hoppaddr = func;
sc->sc_dsp[nr].pushlarg = arg;
}
void
vsbus_intr_enable(nr)
int nr;
{
vs_cpu->vc_intclr = (1<<nr);
vs_cpu->vc_intmsk |= (1<<nr);
}
void
vsbus_intr_disable(nr)
int nr;
{
vs_cpu->vc_intmsk = vs_cpu->vc_intmsk & ~(1<<nr);
}
#ifdef notyet
/*
* Allocate/free DMA pages and other bus resources.
* VS2000: All DMA and register access must be exclusive.
* VS3100: DMA area may be accessed by anyone anytime.
* MFM/SCSI: Don't touch reg's while DMA is active.
* SCSI/SCSI: Legal to touch any register anytime.
*/
#endif