1994-09-18 03:49:58 +04:00
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/* $NetBSD: obio.c,v 1.2 1994/09/17 23:49:58 deraadt Exp $ */
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1994-08-24 13:16:46 +04:00
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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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1994-09-18 03:49:58 +04:00
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#include <machine/oldmon.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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1994-08-24 13:16:46 +04:00
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struct obio_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 obiomatch(struct device *, struct cfdata *, void *);
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static void obioattach(struct device *, struct device *, void *);
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struct cfdriver obiocd = { NULL, "cgsix", obiomatch, obioattach,
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DV_DULL, sizeof(struct obio_softc)
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};
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1994-09-18 03:49:58 +04:00
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void * obio_map __P((void *, int));
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void * obio_tmp_map __P((void *));
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void obio_tmp_unmap __P((void));
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1994-08-24 13:16:46 +04:00
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int
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obiomatch(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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1994-09-18 03:49:58 +04:00
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/*
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* This exists for machines that don't have OpenPROM.
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*/
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1994-08-24 13:16:46 +04:00
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if (cputyp != CPU_SUN4)
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return 0;
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return 1;
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}
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int
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obio_print(args, obio)
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void *args;
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char *obio;
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{
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1994-09-18 03:49:58 +04:00
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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(" slot %d offset 0x%x", ca->ca_slot, ca->ca_offset);
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1994-08-24 13:16:46 +04:00
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return (UNCONF);
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}
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void
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obioattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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register struct obio_softc *sc = (struct obio_softc *)self;
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1994-09-18 03:49:58 +04:00
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extern struct cfdata cfdata[];
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struct confargs ca;
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1994-08-24 13:16:46 +04:00
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register short *p;
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struct cfdata *cf;
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if (sc->sc_dev.dv_unit > 0) {
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printf(" unsupported\n");
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return;
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}
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for (cf = cfdata; cf->cf_driver; cf++) {
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if (cf->cf_fstate == FSTATE_FOUND)
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continue;
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for (p = cf->cf_parents; *p >= 0; p++)
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if (parent->dv_cfdata == &cfdata[*p]) {
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1994-09-18 03:49:58 +04:00
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ca.ca_ra.ra_iospace = -1;
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ca.ca_ra.ra_paddr = (void *)cf->cf_loc[0];
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ca.ca_ra.ra_len = 0;
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ca.ca_ra.ra_vaddr = obio_tmp_map(ca.ca_ra.ra_paddr);
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ca.ca_ra.ra_intr[0].int_pri = cf->cf_loc[1];
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ca.ca_ra.ra_intr[0].int_vec = 0;
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ca.ca_ra.ra_nintr = 1;
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if ((*cf->cf_driver->cd_match)(self, cf, &ca) == 0)
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continue;
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if (ca.ca_ra.ra_len)
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ca.ca_ra.ra_vaddr =
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obio_map(ca.ca_ra.ra_paddr,
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ca.ca_ra.ra_len);
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ca.ca_bustype = BUS_OBIO;
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config_attach(self, cf, &ca, NULL);
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1994-08-24 13:16:46 +04:00
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}
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}
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1994-09-18 03:49:58 +04:00
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obio_tmp_unmap();
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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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obio_map(pa, len)
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void *pa;
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int len;
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{
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u_long pf = (int)pa >> PGSHIFT;
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u_long va, pte;
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for (va = MONSTART; va < MONEND; va += NBPG) {
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pte = getpte(va);
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if ((pte & PG_V) != 0 && (pte & PG_TYPE) == PG_OBIO &&
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(pte & PG_PFNUM) == pf)
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return ((void *)va);
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}
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return mapiodev(pa, len);
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}
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void *
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obio_tmp_map(pa)
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void *pa;
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{
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pmap_enter(kernel_pmap, TMPMAP_VA,
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(vm_offset_t)pa | PMAP_OBIO | PMAP_NC,
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VM_PROT_READ | VM_PROT_WRITE, 1);
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return ((void *)TMPMAP_VA);
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}
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void
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obio_tmp_unmap()
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{
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pmap_remove(kernel_pmap, TMPMAP_VA, TMPMAP_VA+NBPG);
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1994-08-24 13:16:46 +04:00
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}
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