113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/* $NetBSD: pcmb.c,v 1.20 2011/07/01 17:37:27 dyoung Exp $ */
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/*-
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* Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe and Jaromir Dolecek.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* "Driver" for PCI-MCA Bridges.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pcmb.c,v 1.20 2011/07/01 17:37:27 dyoung Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <dev/mca/mcavar.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include "mca.h"
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int pcmbmatch(device_t, cfdata_t, void *);
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void pcmbattach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(pcmb, 0, pcmbmatch, pcmbattach, NULL, NULL);
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void pcmb_callback(device_t);
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int
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pcmbmatch(device_t parent, cfdata_t match, void *aux)
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{
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struct pci_attach_args *pa = aux;
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/*
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* Match anything which claims to be PCI-MCA bridge.
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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_MC)
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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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pcmbattach(device_t parent, device_t self, void *aux)
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{
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struct pci_attach_args *pa = aux;
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char devinfo[256];
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aprint_naive("\n");
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aprint_normal("\n");
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/*
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* Just print out a description and defer configuration
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* until all PCI devices have been attached.
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*/
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pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
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aprint_normal_dev(self, "%s (rev. 0x%02x)\n", devinfo,
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PCI_REVISION(pa->pa_class));
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config_defer(self, pcmb_callback);
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}
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void
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pcmb_callback(device_t self)
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{
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struct mcabus_attach_args ma;
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/*
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* Attach MCA bus behind this bridge.
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*/
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ma.mba_iot = x86_bus_space_io;
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ma.mba_memt = x86_bus_space_mem;
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#if NMCA > 0
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ma.mba_dmat = &mca_bus_dma_tag;
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#endif
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ma.mba_mc = NULL;
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ma.mba_bus = 0;
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config_found_ia(self, "mcabus", &ma, mcabusprint);
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}
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