pci_autoconfig.c revision c88420b3bc75201aa71e3c807fd31e66073a089f
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Determine the PCI configuration mechanism recommended by the BIOS.
*/
#include <sys/types.h>
#include <sys/sunddi.h>
#include <sys/pci_impl.h>
#include <sys/ddi_subrdefs.h>
#include <sys/bootconf.h>
#include <sys/psw.h>
#include <sys/modctl.h>
#include <sys/errno.h>
#include <sys/pci.h>
#include <sys/pci_cfgspace.h>
#include <sys/reboot.h>
#include <sys/pci_cfgspace_impl.h>
#include <sys/mutex.h>
extern int pci_boot_debug;
/*
* Interface routines
*/
void pci_enumerate(int);
void pci_setup_tree(void);
void pci_reprogram(void);
static struct modlmisc modlmisc = {
&mod_miscops, "PCI BIOS interface %I%"
};
static struct modlinkage modlinkage = {
MODREV_1, (void *)&modlmisc, NULL
};
int
_init(void)
{
int err;
if ((err = mod_install(&modlinkage)) != 0)
return (err);
impl_bus_add_probe(pci_enumerate);
return (0);
}
int
_fini(void)
{
int err;
if ((err = mod_remove(&modlinkage)) != 0)
return (err);
impl_bus_delete_probe(pci_enumerate);
return (0);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
/*
* This function is invoked twice: first time, with reprogram=0 to
* set up the PCI portion of the device tree. The second time is
* for reprogramming devices not set up by the BIOS.
*/
void
pci_enumerate(int reprogram)
{
if (reprogram) {
pci_reprogram();
return;
}
/* setup device tree */
pci_setup_tree();
}