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      1 /*	$NetBSD: pchb.c,v 1.11 2012/10/27 17:17:51 chs 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 1.11 2012/10/27 17:17:51 chs Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/device.h>
     43 #include <sys/systm.h>
     44 
     45 #include <dev/pci/pcivar.h>
     46 #include <dev/pci/pcidevs.h>
     47 
     48 static int	pchb_match(device_t, cfdata_t, void *);
     49 static void	pchb_attach(device_t, device_t, void *);
     50 
     51 CFATTACH_DECL_NEW(pchb, 0,
     52     pchb_match, pchb_attach, NULL, NULL);
     53 
     54 static bool pcifound;
     55 
     56 static int
     57 pchb_match(device_t parent, cfdata_t match, void *aux)
     58 {
     59 	struct pci_attach_args *pa = aux;
     60 
     61 	/*
     62 	 * Match all known PCI host chipsets.
     63 	 */
     64 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
     65 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_HOST) {
     66 		switch (PCI_VENDOR(pa->pa_id)) {
     67 		case PCI_VENDOR_MARVELL:
     68 			switch (PCI_PRODUCT(pa->pa_id)) {
     69 			case PCI_PRODUCT_MARVELL_GT64120:
     70 				return (!pcifound);
     71 			}
     72 			break;
     73 		}
     74 	}
     75 	return (0);
     76 }
     77 
     78 static void
     79 pchb_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct pci_attach_args *pa = aux;
     82 	char devinfo[256];
     83 
     84 	printf("\n");
     85 	pcifound = true;
     86 
     87 	/*
     88 	 * All we do is print out a description.  Eventually, we
     89 	 * might want to add code that does something that's
     90 	 * possibly chipset-specific.
     91 	 */
     92 	if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_MARVELL &&
     93 	    PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MARVELL_GT64120) {
     94 		/* Bah, same product ID... */
     95 
     96 		/*
     97 		 * XXX:	Is the >= 0x10 test correct?  The '120 doco
     98 		 *	lists rev == 0x02 and the '120A doco lists
     99 		 *	rev == 0x10.
    100 		 */
    101 		snprintf(devinfo, sizeof(devinfo),
    102 		    "Galileo Technology GT-64120%s System Controller",
    103 		    PCI_REVISION(pa->pa_class) >= 0x10 ? "A" : "");
    104 	} else {
    105 		pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo,
    106 		    sizeof(devinfo));
    107 	}
    108 	printf("%s: %s (rev. 0x%02x)\n", device_xname(self), devinfo,
    109 	    PCI_REVISION(pa->pa_class));
    110 }
    111