NetBSD/sys/dev/pci/pci_subr.c

106 lines
3.2 KiB
C
Raw Normal View History

/* $NetBSD: pci_subr.c,v 1.9 1995/06/17 22:40:34 cgd Exp $ */
1994-10-27 07:14:23 +03:00
1994-08-09 04:47:46 +04:00
/*
* Copyright (c) 1994 Charles Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* PCI autoconfiguration support
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/device.h>
1995-01-27 08:44:29 +03:00
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
1994-08-09 04:47:46 +04:00
int
pciprint(aux, pci)
void *aux;
char *pci;
{
register struct pci_attach_args *pa = aux;
printf(" bus %d device %d", pa->pa_bus, pa->pa_device);
return (UNCONF);
}
int
pcisubmatch(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct cfdata *cf = match;
struct pci_attach_args *pa = aux;
if (cf->cf_loc[0] != -1 && cf->cf_loc[0] != pa->pa_bus)
return 0;
if (cf->cf_loc[1] != -1 && cf->cf_loc[1] != pa->pa_device)
return 0;
return ((*cf->cf_driver->cd_match)(parent, match, aux));
1994-08-09 04:47:46 +04:00
}
/*
* Try to find and attach the PCI device at the give bus and device number.
* Return 1 if successful, 0 if unsuccessful.
*/
int
pci_attach_subdev(pcidev, bus, device)
struct device *pcidev;
int bus, device;
1994-08-09 04:47:46 +04:00
{
pcitag_t tag;
pcireg_t id, class;
struct pci_attach_args pa;
struct cfdata *cf;
tag = pci_make_tag(bus, device, 0);
id = pci_conf_read(tag, PCI_ID_REG);
if (id == 0 || id == 0xffffffff)
return (0);
class = pci_conf_read(tag, PCI_CLASS_REG);
pa.pa_bus = bus;
pa.pa_device = device;
pa.pa_tag = tag;
pa.pa_id = id;
pa.pa_class = class;
if ((cf = config_search(pcisubmatch, pcidev, &pa)) != NULL)
config_attach(pcidev, cf, &pa, pciprint);
else {
printf("%s bus %d device %d: identifier %08x class %08x%s",
pcidev->dv_xname, bus, device, id, class,
" not configured\n");
return (0);
1994-08-09 04:47:46 +04:00
}
return (1);
1994-08-09 04:47:46 +04:00
}