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pci_drvname.c revision 1.3 
      1  1.3  mrg /*	$NetBSD: pci_drvname.c,v 1.3 2021/12/11 19:24:19 mrg Exp $	*/
      2  1.1  mrg 
      3  1.1  mrg /*
      4  1.1  mrg  * Copyright (c) 2014 Matthew R. Green
      5  1.1  mrg  * All rights reserved.
      6  1.1  mrg  *
      7  1.1  mrg  * Redistribution and use in source and binary forms, with or without
      8  1.1  mrg  * modification, are permitted provided that the following conditions
      9  1.1  mrg  * are met:
     10  1.1  mrg  * 1. Redistributions of source code must retain the above copyright
     11  1.1  mrg  *    notice, this list of conditions and the following disclaimer.
     12  1.1  mrg  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.1  mrg  *    notice, this list of conditions and the following disclaimer in the
     14  1.1  mrg  *    documentation and/or other materials provided with the distribution.
     15  1.1  mrg  *
     16  1.1  mrg  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  1.1  mrg  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  1.1  mrg  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  1.1  mrg  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  1.1  mrg  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  1.1  mrg  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  1.1  mrg  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  1.1  mrg  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  1.1  mrg  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.1  mrg  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.1  mrg  * SUCH DAMAGE.
     27  1.1  mrg  */
     28  1.1  mrg 
     29  1.1  mrg #include <sys/cdefs.h>
     30  1.3  mrg __RCSID("$NetBSD: pci_drvname.c,v 1.3 2021/12/11 19:24:19 mrg Exp $");
     31  1.1  mrg 
     32  1.1  mrg #include <sys/types.h>
     33  1.1  mrg #include <sys/ioctl.h>
     34  1.1  mrg #include <string.h>
     35  1.1  mrg 
     36  1.1  mrg #include <pci.h>
     37  1.1  mrg 
     38  1.1  mrg #include <dev/pci/pciio.h>
     39  1.1  mrg 
     40  1.1  mrg /*
     41  1.1  mrg  * pci_drvname:
     42  1.1  mrg  *
     43  1.1  mrg  *	What's the driver name for a PCI device?
     44  1.1  mrg  */
     45  1.1  mrg int
     46  1.1  mrg pci_drvname(int fd, u_int device, u_int func, char *name, size_t len)
     47  1.1  mrg {
     48  1.1  mrg 	struct pciio_drvname drvname;
     49  1.1  mrg 	int rv;
     50  1.1  mrg 
     51  1.1  mrg 	drvname.device = device;
     52  1.1  mrg 	drvname.function = func;
     53  1.1  mrg 
     54  1.1  mrg 	rv = ioctl(fd, PCI_IOC_DRVNAME, &drvname);
     55  1.1  mrg 	if (rv == -1)
     56  1.1  mrg 		return -1;
     57  1.1  mrg 
     58  1.1  mrg 	strlcpy(name, drvname.name, len);
     59  1.1  mrg 	return 0;
     60  1.1  mrg }
     61  1.2  mrg 
     62  1.2  mrg /*
     63  1.2  mrg  * pci_drvnameonbus:
     64  1.2  mrg  *
     65  1.2  mrg  *	What's the driver name for a PCI device on any PCI bus?
     66  1.2  mrg  */
     67  1.2  mrg int
     68  1.2  mrg pci_drvnameonbus(int fd, u_int bus, u_int device, u_int func, char *name,
     69  1.2  mrg 		 size_t len)
     70  1.2  mrg {
     71  1.2  mrg 	struct pciio_drvnameonbus drvname;
     72  1.2  mrg 	int rv;
     73  1.2  mrg 
     74  1.2  mrg 	drvname.bus = bus;
     75  1.2  mrg 	drvname.device = device;
     76  1.2  mrg 	drvname.function = func;
     77  1.2  mrg 
     78  1.2  mrg 	rv = ioctl(fd, PCI_IOC_DRVNAMEONBUS, &drvname);
     79  1.2  mrg 	if (rv == -1)
     80  1.2  mrg 		return -1;
     81  1.2  mrg 
     82  1.2  mrg 	strlcpy(name, drvname.name, len);
     83  1.2  mrg 	return 0;
     84  1.2  mrg }
     85