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pchb.c revision 1.7 
      1 /*	$NetBSD: pchb.c,v 1.7 2004/04/24 15:49:00 kleink Exp $	*/
      2 
      3 /*
      4  * Copyright 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Simon Burge for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: pchb.c,v 1.7 2004/04/24 15:49:00 kleink Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/device.h>
     43 
     44 #include <dev/pci/pcivar.h>
     45 #include <dev/pci/pcidevs.h>
     46 
     47 static int	pchb_match(struct device *, struct cfdata *, void *);
     48 static void	pchb_attach(struct device *, struct device *, void *);
     49 
     50 CFATTACH_DECL(pchb, sizeof(struct device),
     51     pchb_match, pchb_attach, NULL, NULL);
     52 
     53 static int pcifound = 0;
     54 
     55 static int
     56 pchb_match(struct device *parent, struct cfdata *match, void *aux)
     57 {
     58 	struct pci_attach_args *pa = aux;
     59 
     60 	/*
     61 	 * Match all known PCI host chipsets.
     62 	 */
     63 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
     64 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) {
     65 		switch (PCI_VENDOR(pa->pa_id)) {
     66 		case PCI_VENDOR_GALILEO:
     67 			switch (PCI_PRODUCT(pa->pa_id)) {
     68 			case PCI_PRODUCT_GALILEO_GT64120:
     69 				return (!pcifound);
     70 			}
     71 			break;
     72 		}
     73 	}
     74 	return (0);
     75 }
     76 
     77 static void
     78 pchb_attach(struct device *parent, struct device *self, void *aux)
     79 {
     80 	struct pci_attach_args *pa = aux;
     81 	char devinfo[256];
     82 
     83 	printf("\n");
     84 	pcifound++;
     85 
     86 	/*
     87 	 * All we do is print out a description.  Eventually, we
     88 	 * might want to add code that does something that's
     89 	 * possibly chipset-specific.
     90 	 */
     91 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GALILEO &&
     92 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GALILEO_GT64120) {
     93 		/* Bah, same product ID... */
     94 
     95 		/*
     96 		 * XXX:	Is the >= 0x10 test correct?  The '120 doco
     97 		 *	lists rev == 0x02 and the '120A doco lists
     98 		 *	rev == 0x10.
     99 		 */
    100 		snprintf(devinfo, sizeof(devinfo),
    101 		    "Galileo Technology GT-64120%s System Controller",
    102 		    PCI_REVISION(pa->pa_class) >= 0x10 ? "A" : "");
    103 	} else {
    104 		pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo,
    105 		    sizeof(devinfo));
    106 	}
    107 	printf("%s: %s (rev. 0x%02x)\n", self->dv_xname, devinfo,
    108 	    PCI_REVISION(pa->pa_class));
    109 }
    110