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pciio.h revision 1.4 
      1 /*	$NetBSD: pciio.h,v 1.4 2014/07/25 01:38:26 mrg Exp $	*/
      2 
      3 /*
      4  * Copyright 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed for the NetBSD Project by
     20  *	Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _DEV_PCI_PCIIO_H_
     39 #define	_DEV_PCI_PCIIO_H_
     40 
     41 /*
     42  * User -> kernel interface for PCI bus access.
     43  */
     44 
     45 #include <sys/ioccom.h>
     46 
     47 /*
     48  * pciio_cfgreg:
     49  *
     50  *	Representation of a PCI config space register.
     51  */
     52 struct pciio_cfgreg {
     53 	u_int	 reg;	/* offset into PCI configuration space */
     54 	uint32_t val;	/* value of the register */
     55 };
     56 
     57 /*
     58  * Read and write PCI configuration space registers on a
     59  * specific device.
     60  */
     61 #define	PCI_IOC_CFGREAD		_IOWR('P', 0, struct pciio_cfgreg)
     62 #define	PCI_IOC_CFGWRITE	 _IOW('P', 1, struct pciio_cfgreg)
     63 
     64 /*
     65  * pciio_bdf_cfgreg:
     66  *
     67  *	Like pciio_cfgreg, except for any bus/dev/func within
     68  *	a given PCI domain.
     69  */
     70 struct pciio_bdf_cfgreg {
     71 	u_int	bus;
     72 	u_int	device;
     73 	u_int	function;
     74 	struct pciio_cfgreg cfgreg;
     75 };
     76 
     77 /*
     78  * Read and write PCI configuration space registers on any
     79  * device within a given PCI domain.
     80  */
     81 #define	PCI_IOC_BDF_CFGREAD	_IOWR('P', 2, struct pciio_bdf_cfgreg)
     82 #define	PCI_IOC_BDF_CFGWRITE	 _IOW('P', 3, struct pciio_bdf_cfgreg)
     83 
     84 /*
     85  * pciio_businfo:
     86  *
     87  *	Information for a PCI bus (autoconfiguration node) instance.
     88  */
     89 struct pciio_businfo {
     90 	u_int	busno;		/* bus number */
     91 	u_int	maxdevs;	/* max devices on bus */
     92 };
     93 
     94 #define	PCI_IOC_BUSINFO		 _IOR('P', 4, struct pciio_businfo)
     95 
     96 /*
     97  * pciio_drvname:
     98  *
     99  *      Driver info for a PCI device (autoconfiguration node) instance.
    100  *      Must be run on the correct bus.
    101  */
    102 
    103 #define PCI_IO_DRVNAME_LEN	16
    104 struct pciio_drvname {
    105 	u_int	device;				/* in: device number */
    106 	u_int	function;			/* in: function number */
    107 	char	name[PCI_IO_DRVNAME_LEN];
    108 };
    109 
    110 #define	PCI_IOC_DRVNAME		_IOWR('P', 5, struct pciio_drvname)
    111 
    112 
    113 #endif /* _DEV_PCI_PCIIO_H_ */
    114