pci_drvname.c revision 1.1
1/* $NetBSD: pci_drvname.c,v 1.1 2014/07/25 01:38:26 mrg Exp $ */ 2 3/* 4 * Copyright (c) 2014 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/cdefs.h> 32__RCSID("$NetBSD: pci_drvname.c,v 1.1 2014/07/25 01:38:26 mrg Exp $"); 33 34#include <sys/types.h> 35#include <sys/ioctl.h> 36#include <string.h> 37 38#include <pci.h> 39 40#include <dev/pci/pciio.h> 41 42/* 43 * pci_drvname: 44 * 45 * What's the driver name for a PCI device? 46 */ 47int 48pci_drvname(int fd, u_int device, u_int func, char *name, size_t len) 49{ 50 struct pciio_drvname drvname; 51 int rv; 52 53 drvname.device = device; 54 drvname.function = func; 55 56 rv = ioctl(fd, PCI_IOC_DRVNAME, &drvname); 57 if (rv == -1) 58 return -1; 59 60 strlcpy(name, drvname.name, len); 61 return 0; 62} 63