46289e1fef
which bustype should be attached with a specific call to config_found() (from a "mainbus" or a bus bridge). Do it for isa/eisa/mca and pci/agp for now. These buses all attach to an mi interface attribute "isabus", "eisabus" etc., and the autoconf framework now allows to specify an interface attribute on config_found() and config_search(), which limits the search of matching config data to these which attach to that specific attribute. So we basically have to call config_found_ia(..., "foobus", ...) where such a bus is attached. As a consequence, where a "mainbus" or alike also attaches other devices (eg CPUs) which do not attach to a specific attribute yet, we need at least pass an attribute name (different from "foobus") so that the foo bus is not found at these places. This made some minor changes necessary which are not obviously related to the mentioned buses.
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/* $NetBSD: ppb.c,v 1.29 2004/08/30 15:05:20 drochner Exp $ */
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/*
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* Copyright (c) 1996, 1998 Christopher G. Demetriou. 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 Christopher G. Demetriou
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* for 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ppb.c,v 1.29 2004/08/30 15:05:20 drochner Exp $");
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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/device.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/ppbreg.h>
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struct ppb_softc {
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struct device sc_dev; /* generic device glue */
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pci_chipset_tag_t sc_pc; /* our PCI chipset... */
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pcitag_t sc_tag; /* ...and tag. */
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};
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int ppbmatch __P((struct device *, struct cfdata *, void *));
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void ppbattach __P((struct device *, struct device *, void *));
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CFATTACH_DECL(ppb, sizeof(struct ppb_softc),
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ppbmatch, ppbattach, NULL, NULL);
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int
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ppbmatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pci_attach_args *pa = aux;
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/*
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* Check the ID register to see that it's a PCI bridge.
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* If it is, we assume that we can deal with it; it _should_
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* work in a standardized way...
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*/
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if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
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PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_PCI)
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return (1);
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return (0);
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}
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void
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ppbattach(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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struct ppb_softc *sc = (void *) self;
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struct pci_attach_args *pa = aux;
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pci_chipset_tag_t pc = pa->pa_pc;
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struct pcibus_attach_args pba;
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pcireg_t busdata;
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char devinfo[256];
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
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PCI_REVISION(pa->pa_class));
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aprint_naive("\n");
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sc->sc_pc = pc;
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sc->sc_tag = pa->pa_tag;
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busdata = pci_conf_read(pc, pa->pa_tag, PPB_REG_BUSINFO);
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if (PPB_BUSINFO_SECONDARY(busdata) == 0) {
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aprint_normal("%s: not configured by system firmware\n",
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self->dv_xname);
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return;
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}
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#if 0
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/*
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* XXX can't do this, because we're not given our bus number
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* (we shouldn't need it), and because we've no way to
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* decompose our tag.
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*/
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/* sanity check. */
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if (pa->pa_bus != PPB_BUSINFO_PRIMARY(busdata))
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panic("ppbattach: bus in tag (%d) != bus in reg (%d)",
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pa->pa_bus, PPB_BUSINFO_PRIMARY(busdata));
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#endif
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/*
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* Attach the PCI bus than hangs off of it.
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*
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* XXX Don't pass-through Memory Read Multiple. Should we?
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* XXX Consult the spec...
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*/
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pba.pba_iot = pa->pa_iot;
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pba.pba_memt = pa->pa_memt;
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pba.pba_dmat = pa->pa_dmat;
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pba.pba_dmat64 = pa->pa_dmat64;
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pba.pba_pc = pc;
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pba.pba_flags = pa->pa_flags & ~PCI_FLAGS_MRM_OKAY;
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pba.pba_bus = PPB_BUSINFO_SECONDARY(busdata);
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pba.pba_bridgetag = &sc->sc_tag;
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pba.pba_intrswiz = pa->pa_intrswiz;
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pba.pba_intrtag = pa->pa_intrtag;
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config_found_ia(self, "pcibus", &pba, pcibusprint);
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}
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