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pceb.c revision 1.1 
      1 /*	$NetBSD: pceb.c,v 1.1 1998/02/06 07:50:07 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/types.h>
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/device.h>
     43 
     44 #include <machine/bus.h>
     45 
     46 #include <dev/isa/isavar.h>
     47 #include <dev/eisa/eisavar.h>
     48 
     49 #include <dev/pci/pcivar.h>
     50 #include <dev/pci/pcireg.h>
     51 
     52 #include <dev/pci/pcidevs.h>
     53 
     54 #include "eisa.h"
     55 #include "isa.h"
     56 
     57 int	pcebmatch __P((struct device *, void *, void *));
     58 void	pcebattach __P((struct device *, struct device *, void *));
     59 
     60 struct cfattach pceb_ca = {
     61 	sizeof(struct device), pcebmatch, pcebattach
     62 };
     63 
     64 void	pceb_callback __P((void *));
     65 int	pceb_print __P((void *, const char *));
     66 
     67 union pceb_attach_args {
     68 	const char *ea_name;			/* XXX should be common */
     69 	struct isabus_attach_args ea_iba;
     70 	struct eisabus_attach_args ea_eba;
     71 };
     72 
     73 int
     74 pcebmatch(parent, match, aux)
     75 	struct device *parent;
     76 	void *match, *aux;
     77 {
     78 	struct pci_attach_args *pa = aux;
     79 
     80 	/*
     81 	 * Match all known PCI-EISA bridges.
     82 	 */
     83 	switch (PCI_VENDOR(pa->pa_id)) {
     84 	case PCI_VENDOR_INTEL:
     85 		switch (PCI_PRODUCT(pa->pa_id)) {
     86 		case PCI_PRODUCT_INTEL_PCEB:
     87 			return (1);
     88 		}
     89 		break;
     90 	}
     91 
     92 	return (0);
     93 }
     94 
     95 void
     96 pcebattach(parent, self, aux)
     97 	struct device *parent, *self;
     98 	void *aux;
     99 {
    100 	struct pci_attach_args *pa = aux;
    101 	char devinfo[256];
    102 
    103 	printf("\n");
    104 
    105 	/*
    106 	 * Just print out a description and set the EISA bus
    107 	 * callback.
    108 	 */
    109 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    110 	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
    111 	    PCI_REVISION(pa->pa_class));
    112 
    113 	set_pci_isa_bridge_callback(pceb_callback, self);
    114 }
    115 
    116 void
    117 pceb_callback(arg)
    118 	void *arg;
    119 {
    120 	struct device *self = arg;
    121 	union pceb_attach_args ea;
    122 
    123 	/*
    124 	 * Attach the EISA bus behind this bridge.
    125 	 */
    126 	bzero(&ea, sizeof(ea));
    127 	ea.ea_eba.eba_busname = "eisa";
    128 	ea.ea_eba.eba_iot = I386_BUS_SPACE_IO;
    129 	ea.ea_eba.eba_memt = I386_BUS_SPACE_MEM;
    130 #if NEISA > 0
    131 	ea.ea_eba.eba_dmat = &eisa_bus_dma_tag;
    132 #endif
    133 	config_found(self, &ea.ea_eba, pceb_print);
    134 
    135 	/*
    136 	 * Attach the ISA bus behind this bridge.
    137 	 */
    138 	bzero(&ea, sizeof(ea));
    139 	ea.ea_iba.iba_busname = "isa";
    140 	ea.ea_iba.iba_iot = I386_BUS_SPACE_IO;
    141 	ea.ea_iba.iba_memt = I386_BUS_SPACE_MEM;
    142 #if NISA > 0
    143 	ea.ea_iba.iba_dmat = &isa_bus_dma_tag;
    144 #endif
    145 	config_found(self, &ea.ea_iba, pceb_print);
    146 }
    147 
    148 int
    149 pceb_print(aux, pnp)
    150 	void *aux;
    151 	const char *pnp;
    152 {
    153 	union pceb_attach_args *ea = aux;
    154 
    155 	if (pnp)
    156 		printf("%s at %s", ea->ea_name, pnp);
    157 	return (UNCONF);
    158 }
    159