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pcib.c revision 1.10 
      1 /*	$NetBSD: pcib.c,v 1.10 2009/03/14 14:45:58 dsl 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  * 	from:  i386/pci/pcib.c,v 1.12
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 __KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.10 2009/03/14 14:45:58 dsl Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/device.h>
     40 
     41 #include <machine/bus.h>
     42 
     43 #include <dev/isa/isavar.h>
     44 
     45 #include <dev/pci/pcivar.h>
     46 #include <dev/pci/pcireg.h>
     47 
     48 #include <dev/pci/pcidevs.h>
     49 
     50 #include "isadma.h"
     51 
     52 int	pcibmatch(struct device *, struct cfdata *, void *);
     53 void	pcibattach(struct device *, struct device *, void *);
     54 
     55 CFATTACH_DECL(pcib, sizeof(struct device),
     56     pcibmatch, pcibattach, NULL, NULL);
     57 
     58 void	pcib_callback(struct device *);
     59 
     60 int
     61 pcibmatch(parent, match, aux)
     62 	struct device *parent;
     63 	struct cfdata *match;
     64 	void *aux;
     65 {
     66 	struct pci_attach_args *pa = aux;
     67 
     68 	/*
     69 	 * Match tested PCI-ISA bridges.
     70 	 */
     71 	switch (PCI_VENDOR(pa->pa_id)) {
     72 	case PCI_VENDOR_ALI:
     73 		switch (PCI_PRODUCT(pa->pa_id)) {
     74 		case PCI_PRODUCT_ALI_M1543:
     75 			return (1);
     76 		}
     77 		break;
     78 	}
     79 
     80 	return (0);
     81 }
     82 
     83 void
     84 pcibattach(parent, self, aux)
     85 	struct device *parent, *self;
     86 	void *aux;
     87 {
     88 	struct pci_attach_args *pa = aux;
     89 	char devinfo[256];
     90 
     91 	printf("\n");
     92 
     93 	/*
     94 	 * Just print out a description and set the ISA bus
     95 	 * callback.
     96 	 */
     97 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
     98 	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
     99 	    PCI_REVISION(pa->pa_class));
    100 
    101 	/* Set the ISA bus callback */
    102 	config_defer(self, pcib_callback);
    103 }
    104 
    105 void
    106 pcib_callback(self)
    107 	struct device *self;
    108 {
    109 	struct isabus_attach_args iba;
    110 
    111 	/*
    112 	 * Attach the ISA bus behind this bridge.
    113 	 */
    114 	memset(&iba, 0, sizeof(iba));
    115 	iba.iba_iot = &isa_io_bs_tag;
    116 	iba.iba_memt = &isa_mem_bs_tag;
    117 #if NISADMA > 0
    118 	iba.iba_dmat = &isa_bus_dma_tag;
    119 #endif
    120 	config_found_ia(self, "isabus", &iba, isabusprint);
    121 }
    122