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/*
* Copyright (c) 1997, Stefan Esser <se@freebsd.org>
* 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 unmodified, 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.
*
* 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: pcibus.c,v 1.41 1997/12/20 09:04:25 se Exp $
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus_private.h>
#include <pci/pcivar.h>
#include <machine/chipset.h>
static int cfgmech;
static int devmax;
#ifdef notyet
/* return max number of devices on the bus */
int
pci_maxdevs(pcicfgregs *cfg)
{
return chipset.maxdevs(cfg->bus);
}
#endif
/* read configuration space register */
int
pci_cfgread(pcicfgregs *cfg, int reg, int bytes)
{
switch (bytes) {
case 1:
return chipset.cfgreadb(cfg->bus, cfg->slot, cfg->func, reg);
case 2:
return chipset.cfgreadw(cfg->bus, cfg->slot, cfg->func, reg);
case 4:
return chipset.cfgreadl(cfg->bus, cfg->slot, cfg->func, reg);
}
return ~0;
}
/* write configuration space register */
void
pci_cfgwrite(pcicfgregs *cfg, int reg, int data, int bytes)
{
switch (bytes) {
case 1:
return chipset.cfgwriteb(cfg->bus, cfg->slot, cfg->func, reg, data);
case 2:
return chipset.cfgwritew(cfg->bus, cfg->slot, cfg->func, reg, data);
case 4:
return chipset.cfgwritel(cfg->bus, cfg->slot, cfg->func, reg, data);
}
}
int
pci_cfgopen(void)
{
return 1;
}
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