158 lines
4.0 KiB
C
158 lines
4.0 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* $Id: pci.c,v 1.2 1994/08/10 04:37:52 mycroft Exp $
|
|
*/
|
|
|
|
/*
|
|
* PCI autoconfiguration support
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <i386/pci/pcivar.h>
|
|
#include <i386/pci/pcireg.h>
|
|
|
|
#if defined(i386) && !defined(NEWCONFIG)
|
|
#include <i386/isa/isa_device.h>
|
|
#endif
|
|
|
|
int pciprobe();
|
|
void pciattach();
|
|
|
|
struct cfdriver pcicd = {
|
|
NULL, "pci", pciprobe, pciattach, DV_DULL, sizeof(struct device)
|
|
};
|
|
|
|
int
|
|
pciprobe(parent, cf, aux)
|
|
struct device *parent;
|
|
struct cfdata *cf;
|
|
void *aux;
|
|
{
|
|
|
|
#ifdef i386
|
|
if (pci_mode_detect() == 0)
|
|
return 0;
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
pciprint(aux, pci)
|
|
void *aux;
|
|
char *pci;
|
|
{
|
|
register struct pci_attach_args *pa = aux;
|
|
|
|
printf("%s bus %d device %d", pci ? pci : "", pa->pa_bus,
|
|
pa->pa_device);
|
|
if (pci)
|
|
printf(": identifier %08x class %08x", pa->pa_id,
|
|
pa->pa_class);
|
|
return UNCONF;
|
|
}
|
|
|
|
void
|
|
pciattach(parent, self, aux)
|
|
struct device *parent, *self;
|
|
void *aux;
|
|
{
|
|
int bus, device;
|
|
|
|
#ifdef i386
|
|
printf(": configuration mode %d\n", pci_mode);
|
|
#else
|
|
printf("\n");
|
|
#endif
|
|
|
|
#if 0
|
|
for (bus = 0; bus <= 255; bus++) {
|
|
#else
|
|
/*
|
|
* XXX
|
|
* Some current chipsets do wacky things with bus numbers > 0.
|
|
* This seems like a violation of protocol, but the PCI BIOS does
|
|
* allow one to query the maximum bus number, and eventually we
|
|
* should do so.
|
|
*/
|
|
for (bus = 0; bus <= 0; bus++) {
|
|
#endif
|
|
#ifdef i386
|
|
for (device = 0; device <= (pci_mode == 2 ? 15 : 31);
|
|
device++) {
|
|
#else
|
|
for (device = 0; device <= 31; device++) {
|
|
#endif
|
|
pcitag_t tag = pci_make_tag(bus, device, 0);
|
|
pcireg_t id = pci_conf_read(tag, PCI_ID_REG),
|
|
class = pci_conf_read(tag, PCI_CLASS_REG);
|
|
struct pci_attach_args pa;
|
|
|
|
if (id == 0 || id == 0xffffffff)
|
|
continue;
|
|
|
|
pa.pa_bus = bus;
|
|
pa.pa_device = device;
|
|
pa.pa_tag = tag;
|
|
pa.pa_id = id;
|
|
pa.pa_class = class;
|
|
|
|
(void)config_found(self, (void *)&pa, pciprint);
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
pci_targmatch(cf, pa)
|
|
struct cfdata *cf;
|
|
struct pci_attach_args *pa;
|
|
{
|
|
#if !defined(i386) || defined(NEWCONFIG)
|
|
|
|
#define cf_bus cf_loc[0]
|
|
#define cf_device cf_loc[1]
|
|
if (cf->cf_bus != -1 && cf->cf_bus != pa->pa_bus)
|
|
return 0;
|
|
if (cf->cf_device != -1 && cf->cf_device != pa->pa_device)
|
|
return 0;
|
|
#undef cf_device
|
|
#undef cf_bus
|
|
#else
|
|
struct isa_device *id = (void *)cf->cf_loc;
|
|
|
|
if (id->id_physid != -1 &&
|
|
id->id_physid != (pa->pa_bus << 5) | pa->pa_device)
|
|
return 0;
|
|
#endif
|
|
|
|
return 1;
|
|
}
|