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      1 /* $NetBSD: amdpcib.c,v 1.5 2021/08/07 16:19:07 thorpej Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2006 Nicolas Joly
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: amdpcib.c,v 1.5 2021/08/07 16:19:07 thorpej Exp $");
     33 
     34 #include <sys/systm.h>
     35 #include <sys/device.h>
     36 
     37 #include <dev/pci/pcivar.h>
     38 #include <dev/pci/pcireg.h>
     39 #include <dev/pci/pcidevs.h>
     40 #include "pcibvar.h"
     41 
     42 struct amdpcib_softc {
     43 	/* we are calling pcibattach(), which assumes this starts like this: */
     44 	struct pcib_softc	sc_pcib;
     45 	bus_space_tag_t		sc_memt;
     46 	bus_space_handle_t	sc_memh;
     47 };
     48 
     49 static int	amdpcib_match(device_t, cfdata_t, void *);
     50 static void	amdpcib_attach(device_t, device_t, void *);
     51 static int	amdpcib_search(device_t, cfdata_t, const int *, void *);
     52 
     53 CFATTACH_DECL_NEW(amdpcib, sizeof(struct amdpcib_softc), amdpcib_match,
     54     amdpcib_attach, NULL, NULL);
     55 
     56 static int
     57 amdpcib_match(device_t parent, cfdata_t match, void *aux)
     58 {
     59 	struct pci_attach_args *pa = aux;
     60 
     61 	if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) &&
     62 	    (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC8111_LPC))
     63 		return 2;
     64 
     65 	return 0;
     66 }
     67 
     68 static void
     69 amdpcib_attach(device_t parent, device_t self, void *aux)
     70 {
     71 	struct pci_attach_args *pa = aux;
     72 
     73 	pcibattach(parent, self, aux);
     74 
     75 	config_search(self, pa,
     76 	    CFARGS(.search = amdpcib_search,
     77 		   .iattr = "amdpcib"));
     78 }
     79 
     80 static int
     81 amdpcib_search(device_t parent, cfdata_t cf, const int *locs, void *aux)
     82 {
     83 
     84 	if (config_probe(parent, cf, aux))
     85 		config_attach(parent, cf, aux, NULL,
     86 		    CFARGS(.locators = locs));
     87 
     88 	return 0;
     89 }
     90