416 lines
10 KiB
C
416 lines
10 KiB
C
/* $NetBSD: obio.c,v 1.19 1996/01/12 21:44:16 chuck Exp $ */
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/*
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* Copyright (c) 1993, 1994 Theo de Raadt
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* 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 Theo de Raadt.
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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/param.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#ifdef DEBUG
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#include <sys/proc.h>
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#include <sys/syslog.h>
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#endif
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#include <vm/vm.h>
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#include <machine/autoconf.h>
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#include <machine/pmap.h>
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#include <machine/oldmon.h>
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#include <machine/cpu.h>
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#include <machine/ctlreg.h>
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#include <sparc/sparc/asm.h>
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#include <sparc/sparc/vaddrs.h>
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struct bus_softc {
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struct device sc_dev; /* base device */
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int nothing;
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};
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/* autoconfiguration driver */
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static int busmatch __P((struct device *, void *, void *));
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static void obioattach __P((struct device *, struct device *, void *));
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#if defined(SUN4)
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static void vmesattach __P((struct device *, struct device *, void *));
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static void vmelattach __P((struct device *, struct device *, void *));
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static int busattach __P((struct device *, void *, void *, int));
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void * bus_map __P((struct rom_reg *, int, int));
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void * bus_tmp __P((void *, int));
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void bus_untmp __P((void));
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#endif
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struct cfdriver obiocd = { NULL, "obio", busmatch, obioattach,
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DV_DULL, sizeof(struct bus_softc)
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};
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#if defined(SUN4)
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struct cfdriver vmelcd = { NULL, "vmel", busmatch, vmelattach,
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DV_DULL, sizeof(struct bus_softc)
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};
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struct cfdriver vmescd = { NULL, "vmes", busmatch, vmesattach,
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DV_DULL, sizeof(struct bus_softc)
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};
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#endif
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int
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busmatch(parent, vcf, aux)
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struct device *parent;
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void *vcf, *aux;
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{
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struct cfdata *cf = vcf;
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register struct confargs *ca = aux;
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register struct romaux *ra = &ca->ca_ra;
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if (cputyp != CPU_SUN4)
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return (0);
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return (strcmp(cf->cf_driver->cd_name, ra->ra_name) == 0);
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}
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int
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busprint(args, obio)
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void *args;
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char *obio;
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{
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register struct confargs *ca = args;
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if (ca->ca_ra.ra_name == NULL)
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ca->ca_ra.ra_name = "<unknown>";
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if (obio)
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printf("[%s at %s]", ca->ca_ra.ra_name, obio);
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printf(" addr 0x%x", ca->ca_ra.ra_paddr);
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if (ca->ca_ra.ra_intr[0].int_vec != -1)
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printf(" vec 0x%x", ca->ca_ra.ra_intr[0].int_vec);
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return (UNCONF);
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}
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int
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busattach(parent, child, args, bustype)
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struct device *parent;
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void *args, *child;
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int bustype;
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{
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struct cfdata *cf = child;
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register struct bus_softc *sc = (struct bus_softc *)parent;
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register struct confargs *ca = args;
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struct confargs oca;
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caddr_t tmp;
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if (bustype == BUS_OBIO && cputyp == CPU_SUN4) {
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/*
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* On the 4/100 obio addresses must be mapped at
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* 0x0YYYYYYY, but alias higher up (we avoid the
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* alias condition because it causes pmap difficulties)
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* XXX: We also assume that 4/[23]00 obio addresses
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* must be 0xZYYYYYYY, where (Z != 0)
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*/
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if (cpumod==SUN4_100 && (cf->cf_loc[0] & 0xf0000000))
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return 0;
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if (cpumod!=SUN4_100 && !(cf->cf_loc[0] & 0xf0000000))
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return 0;
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}
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if (parent->dv_cfdata->cf_driver->cd_indirect) {
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printf(" indirect devices not supported\n");
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return 0;
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}
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oca.ca_ra.ra_iospace = -1;
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oca.ca_ra.ra_paddr = (void *)cf->cf_loc[0];
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oca.ca_ra.ra_len = 0;
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oca.ca_ra.ra_nreg = 1;
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tmp = NULL;
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if (oca.ca_ra.ra_paddr)
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tmp = bus_tmp(oca.ca_ra.ra_paddr,
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bustype);
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oca.ca_ra.ra_vaddr = tmp;
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oca.ca_ra.ra_intr[0].int_pri = cf->cf_loc[1];
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if (bustype == BUS_VME16 || bustype == BUS_VME32)
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oca.ca_ra.ra_intr[0].int_vec = cf->cf_loc[2];
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else
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oca.ca_ra.ra_intr[0].int_vec = -1;
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oca.ca_ra.ra_nintr = 1;
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oca.ca_ra.ra_name = cf->cf_driver->cd_name;
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if (ca->ca_ra.ra_bp != NULL &&
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((bustype == BUS_VME16 && strcmp(ca->ca_ra.ra_bp->name,"vmes") ==0) ||
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(bustype == BUS_VME32 && strcmp(ca->ca_ra.ra_bp->name,"vmel") ==0) ||
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(bustype == BUS_OBIO && strcmp(ca->ca_ra.ra_bp->name,"obio") == 0)))
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oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
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else
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oca.ca_ra.ra_bp = NULL;
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oca.ca_bustype = bustype;
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if ((*cf->cf_driver->cd_match)(parent, cf, &oca) == 0)
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return 0;
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/*
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* check if XXmatch routine replaced the temporary mapping with
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* a real mapping. If not, then make sure we don't pass the
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* tmp mapping to the attach routine.
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*/
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if (oca.ca_ra.ra_vaddr == tmp)
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oca.ca_ra.ra_vaddr = NULL; /* wipe out tmp address */
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/*
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* the match routine will set "ra_len" if it wants us to
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* establish a mapping for it.
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* (which won't be seen on future XXmatch calls,
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* so not as useful as it seems.)
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*/
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if (oca.ca_ra.ra_len)
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oca.ca_ra.ra_vaddr =
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bus_map(oca.ca_ra.ra_reg,
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oca.ca_ra.ra_len, oca.ca_bustype);
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config_attach(parent, cf, &oca, busprint);
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return 1;
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}
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#if defined(SUN4)
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int
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obio_scan(parent, child, args)
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struct device *parent;
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void *child, *args;
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{
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return busattach(parent, child, args, BUS_OBIO);
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}
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#endif
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void
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obioattach(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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#if defined(SUN4)
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if (cputyp == CPU_SUN4) {
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if (self->dv_unit > 0) {
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printf(" unsupported\n");
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return;
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}
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printf("\n");
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(void)config_search(obio_scan, self, args);
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bus_untmp();
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}
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#endif
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}
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#if defined(SUN4)
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struct intrhand **vmeints;
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int
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vmes_scan(parent, child, args)
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struct device *parent;
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void *child, *args;
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{
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return busattach(parent, child, args, BUS_VME16);
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}
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void
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vmesattach(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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if (self->dv_unit > 0) {
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printf(" unsupported\n");
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return;
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}
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printf("\n");
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if (vmeints == NULL) {
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vmeints = (struct intrhand **)malloc(256 *
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sizeof(struct intrhand *), M_TEMP, M_NOWAIT);
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bzero(vmeints, 256 * sizeof(struct intrhand *));
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}
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(void)config_search(vmes_scan, self, args);
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bus_untmp();
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}
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int
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vmel_scan(parent, child, args)
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struct device *parent;
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void *child, *args;
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{
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return busattach(parent, child, args, BUS_VME32);
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}
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void
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vmelattach(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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if (self->dv_unit > 0) {
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printf(" unsupported\n");
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return;
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}
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printf("\n");
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if (vmeints == NULL) {
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vmeints = (struct intrhand **)malloc(256 *
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sizeof(struct intrhand *), M_TEMP, M_NOWAIT);
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bzero(vmeints, 256 * sizeof(struct intrhand *));
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}
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(void)config_search(vmel_scan, self, args);
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bus_untmp();
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}
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int pil_to_vme[] = {
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-1, /* pil 0 */
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-1, /* pil 1 */
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1, /* pil 2 */
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2, /* pil 3 */
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-1, /* pil 4 */
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3, /* pil 5 */
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-1, /* pil 6 */
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4, /* pil 7 */
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-1, /* pil 8 */
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5, /* pil 9 */
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-1, /* pil 10 */
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6, /* pil 11 */
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-1, /* pil 12 */
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7, /* pil 13 */
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-1, /* pil 14 */
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-1, /* pil 15 */
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};
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int
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vmeintr(arg)
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void *arg;
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{
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int level = (int)arg, vec;
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struct intrhand *ih;
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int i = 0;
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vec = ldcontrolb(AC_VMEINTVEC | (pil_to_vme[level] << 1) | 1);
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if (vec == -1) {
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printf("vme: spurious interrupt\n");
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return 0;
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}
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for (ih = vmeints[vec]; ih; ih = ih->ih_next)
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if (ih->ih_fun)
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i += (ih->ih_fun)(ih->ih_arg);
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return (i);
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}
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void
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vmeintr_establish(vec, level, ih)
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int vec, level;
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struct intrhand *ih;
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{
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struct intrhand *ihs;
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if (vec == -1)
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panic("vmeintr_establish: uninitialized vec\n");
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if (vmeints[vec] == NULL)
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vmeints[vec] = ih;
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else {
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for (ihs = vmeints[vec]; ihs->ih_next; ihs = ihs->ih_next)
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;
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ihs->ih_next = ih;
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}
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/* ensure the interrupt subsystem will call us at this level */
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for (ihs = intrhand[level]; ihs; ihs = ihs->ih_next)
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if (ihs->ih_fun == vmeintr)
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return;
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ihs = (struct intrhand *)malloc(sizeof(struct intrhand),
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M_TEMP, M_NOWAIT);
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if (ihs == NULL)
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panic("vme_addirq");
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bzero(ihs, sizeof *ihs);
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ihs->ih_fun = vmeintr;
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ihs->ih_arg = (void *)level;
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intr_establish(level, ihs);
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}
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#define getpte(va) lda(va, ASI_PTE)
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/*
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* If we can find a mapping that was established by the rom, use it.
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* Else, create a new mapping.
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*/
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void *
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bus_map(pa, len, bustype)
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struct rom_reg *pa;
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int len;
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int bustype;
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{
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u_long pf = (u_long)(pa->rr_paddr) >> PGSHIFT;
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u_long va, pte;
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int pgtype;
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switch (bt2pmt[bustype]) {
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case PMAP_OBIO:
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pgtype = PG_OBIO;
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break;
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case PMAP_VME32:
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pgtype = PG_VME32;
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break;
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case PMAP_VME16:
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pgtype = PG_VME16;
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break;
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}
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if (len <= NBPG) {
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for (va = OLDMON_STARTVADDR; va < OLDMON_ENDVADDR; va += NBPG) {
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pte = getpte(va);
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if ((pte & PG_V) != 0 && (pte & PG_TYPE) == pgtype &&
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(pte & PG_PFNUM) == pf)
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return ((void *)
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(va | ((u_long)pa->rr_paddr & PGOFSET)) );
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/* note: preserve page offset */
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}
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}
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return mapiodev(pa, 0, len, bustype);
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}
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void *
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bus_tmp(pa, bustype)
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void *pa;
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int bustype;
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{
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vm_offset_t addr = (vm_offset_t)pa & ~PGOFSET;
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int pmtype = bt2pmt[bustype];
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pmap_enter(pmap_kernel(), TMPMAP_VA,
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addr | pmtype | PMAP_NC,
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VM_PROT_READ | VM_PROT_WRITE, 1);
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return ((void *)(TMPMAP_VA | ((u_long) pa & PGOFSET)) );
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}
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void
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bus_untmp()
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{
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pmap_remove(pmap_kernel(), TMPMAP_VA, TMPMAP_VA+NBPG);
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}
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#endif
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