headers/private/kernel/platform/openfirmware/pci.h

   1 /*-
   2  * Copyright (c) 1999 The NetBSD Foundation, Inc.
   3  * All rights reserved.
   4  *
   5  * This code is derived from software contributed to The NetBSD Foundation
   6  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   7  * NASA Ames Research Center.
   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 by the NetBSD
  20  *      Foundation, Inc. and its contributors.
  21  * 4. Neither the name of The NetBSD Foundation nor the names of its
  22  *    contributors may be used to endorse or promote products derived
  23  *    from this software without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  26  * ``AS IS'' AND 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 THE FOUNDATION OR CONTRIBUTORS
  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  *      from: NetBSD: ofw_pci.h,v 1.5 2003/10/22 09:04:39 mjl Exp
  38  *
  39  * $FreeBSD$
  40  */
  41
  42 #ifndef _KERNEL_OPEN_FIRMWARE_PCI_H
  43 #define _KERNEL_OPEN_FIRMWARE_PCI_H
  44
  45 #include <SupportDefs.h>
  46
  47 /*
  48  * PCI Bus Binding to:
  49  *
  50  * IEEE Std 1275-1994
  51  * Standard for Boot (Initialization Configuration) Firmware
  52  *
  53  * Revision 2.1
  54  */
  55
  56 /*
  57  * Section 2.2.1. Physical Address Formats
  58  *
  59  * A PCI physical address is represented by 3 address cells:
  60  *
  61  *      phys.hi cell:   npt000ss bbbbbbbb dddddfff rrrrrrrr
  62  *      phys.mid cell:  hhhhhhhh hhhhhhhh hhhhhhhh hhhhhhhh
  63  *      phys.lo cell:   llllllll llllllll llllllll llllllll
  64  *
  65  *      n       nonrelocatable
  66  *      p       prefetchable
  67  *      t       aliased below 1MB (memory) or 64k (i/o)
  68  *      ss      space code
  69  *      b       bus number
  70  *      d       device number
  71  *      f       function number
  72  *      r       register number
  73  *      h       high 32-bits of PCI address
  74  *      l       low 32-bits of PCI address
  75  */
  76
  77 #define OFW_PCI_PHYS_HI_NONRELOCATABLE  0x80000000
  78 #define OFW_PCI_PHYS_HI_PREFETCHABLE    0x40000000
  79 #define OFW_PCI_PHYS_HI_ALIASED         0x20000000
  80 #define OFW_PCI_PHYS_HI_SPACEMASK       0x03000000
  81 #define OFW_PCI_PHYS_HI_BUSMASK         0x00ff0000
  82 #define OFW_PCI_PHYS_HI_BUSSHIFT        16
  83 #define OFW_PCI_PHYS_HI_DEVICEMASK      0x0000f800
  84 #define OFW_PCI_PHYS_HI_DEVICESHIFT     11
  85 #define OFW_PCI_PHYS_HI_FUNCTIONMASK    0x00000700
  86 #define OFW_PCI_PHYS_HI_FUNCTIONSHIFT   8
  87 #define OFW_PCI_PHYS_HI_REGISTERMASK    0x000000ff
  88
  89 #define OFW_PCI_PHYS_HI_SPACE_CONFIG    0x00000000
  90 #define OFW_PCI_PHYS_HI_SPACE_IO        0x01000000
  91 #define OFW_PCI_PHYS_HI_SPACE_MEM32     0x02000000
  92 #define OFW_PCI_PHYS_HI_SPACE_MEM64     0x03000000
  93
  94 #define OFW_PCI_PHYS_HI_BUS(hi) \
  95         (((hi) & OFW_PCI_PHYS_HI_BUSMASK) >> OFW_PCI_PHYS_HI_BUSSHIFT)
  96 #define OFW_PCI_PHYS_HI_DEVICE(hi) \
  97         (((hi) & OFW_PCI_PHYS_HI_DEVICEMASK) >> OFW_PCI_PHYS_HI_DEVICESHIFT)
  98 #define OFW_PCI_PHYS_HI_FUNCTION(hi) \
  99         (((hi) & OFW_PCI_PHYS_HI_FUNCTIONMASK) >> OFW_PCI_PHYS_HI_FUNCTIONSHIFT)
 100
 101 /*
 102  * This has the 3 32bit cell values, plus 2 more to make up a 64-bit size.
 103  */
 104 struct ofw_pci_register {
 105         uint32  phys_hi;
 106         uint32  phys_mid;
 107         uint32  phys_lo;
 108         uint32  size_hi;
 109         uint32  size_lo;
 110 };
 111
 112 #endif /* _KERNEL_OPEN_FIRMWARE_PCI_H */