1/* $NetBSD: pci_drvname.c,v 1.3 2021/12/11 19:24:19 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__RCSID("$NetBSD: pci_drvname.c,v 1.3 2021/12/11 19:24:19 mrg Exp $"); 31 32#include <sys/types.h> 33#include <sys/ioctl.h> 34#include <string.h> 35 36#include <pci.h> 37 38#include <dev/pci/pciio.h> 39 40/* 41 * pci_drvname: 42 * 43 * What's the driver name for a PCI device? 44 */ 45int 46pci_drvname(int fd, u_int device, u_int func, char *name, size_t len) 47{ 48 struct pciio_drvname drvname; 49 int rv; 50 51 drvname.device = device; 52 drvname.function = func; 53 54 rv = ioctl(fd, PCI_IOC_DRVNAME, &drvname); 55 if (rv == -1) 56 return -1; 57 58 strlcpy(name, drvname.name, len); 59 return 0; 60} 61 62/* 63 * pci_drvnameonbus: 64 * 65 * What's the driver name for a PCI device on any PCI bus? 66 */ 67int 68pci_drvnameonbus(int fd, u_int bus, u_int device, u_int func, char *name, 69 size_t len) 70{ 71 struct pciio_drvnameonbus drvname; 72 int rv; 73 74 drvname.bus = bus; 75 drvname.device = device; 76 drvname.function = func; 77 78 rv = ioctl(fd, PCI_IOC_DRVNAMEONBUS, &drvname); 79 if (rv == -1) 80 return -1; 81 82 strlcpy(name, drvname.name, len); 83 return 0; 84} 85