90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* $NetBSD: pci_device.c,v 1.2 2003/03/08 09:53:45 lukem Exp $ */
|
|
|
|
/*
|
|
* Copyright 2001 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
|
|
*
|
|
* 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 for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Interface to PCI config space registers for a specific PCI device.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: pci_device.c,v 1.2 2003/03/08 09:53:45 lukem Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
|
|
#include <pci.h>
|
|
|
|
#include <dev/pci/pciio.h>
|
|
|
|
/*
|
|
* pcidev_conf_read:
|
|
*
|
|
* Read a config word for a given bus/device/function.
|
|
*/
|
|
int
|
|
pcidev_conf_read(int fd, u_int reg, uint32_t *valp)
|
|
{
|
|
struct pciio_cfgreg r;
|
|
int rv;
|
|
|
|
r.reg = reg;
|
|
|
|
rv = ioctl(fd, PCI_IOC_CFGREAD, &r);
|
|
if (rv == -1) {
|
|
/* errno already set. */
|
|
return (-1);
|
|
}
|
|
|
|
*valp = r.val;
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* pcidev_conf_write:
|
|
*
|
|
* Write a config word for a given bus/device/function.
|
|
*/
|
|
int
|
|
pcidev_conf_write(int fd, u_int reg, uint32_t val)
|
|
{
|
|
struct pciio_cfgreg r;
|
|
|
|
r.reg = reg;
|
|
r.val = val;
|
|
|
|
return (ioctl(fd, PCI_IOC_CFGWRITE, &r));
|
|
}
|