sys/dev/pci/pciio.h

   1 /*      $NetBSD: pciio.h,v 1.2 2001/09/14 06:09:42 simonb 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 #endif /* _DEV_PCI_PCIIO_H_ */