1 /* $OpenBSD: ofw_pci.h,v 1.3 2004/10/01 04:08:45 jsg Exp $ */
2 /* $NetBSD: ofw_pci.h,v 1.4 2001/02/17 16:28:37 mrg Exp $ */
3
4 /*-
5 * Copyright (c) 1999 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
10 * NASA Ames Research Center.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. All advertising materials mentioning features or use of this software
21 * must display the following acknowledgement:
22 * This product includes software developed by the NetBSD
23 * Foundation, Inc. and its contributors.
24 * 4. Neither the name of The NetBSD Foundation nor the names of its
25 * contributors may be used to endorse or promote products derived
26 * from this software without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
38 * POSSIBILITY OF SUCH DAMAGE.
39 */
40
41 #ifndef _DEV_OFW_OFW_PCI_H_
42 #define _DEV_OFW_OFW_PCI_H_
43
44 /*
45 * PCI Bus Binding to:
46 *
47 * IEEE Std 1275-1994
48 * Standard for Boot (Initialization Configuration) Firmware
49 *
50 * Revision 2.1
51 */
52
53 /*
54 * Section 2.2.1. Physical Address Formats
55 *
56 * A PCI physical address is represented by 3 address cells:
57 *
58 * phys.hi cell: npt000ss bbbbbbbb dddddfff rrrrrrrr
59 * phys.mid cell: hhhhhhhh hhhhhhhh hhhhhhhh hhhhhhhh
60 * phys.lo cell: llllllll llllllll llllllll llllllll
61 *
62 * n nonrelocatable
63 * p prefetchable
64 * t aliased below 1MB (memory) or 64k (i/o)
65 * ss space code
66 * b bus number
67 * d device number
68 * f function number
69 * r register number
70 * h high 32-bits of PCI address
71 * l low 32-bits of PCI address
72 */
73
74 #define OFW_PCI_PHYS_HI_NONRELOCATABLE 0x80000000
75 #define OFW_PCI_PHYS_HI_PREFETCHABLE 0x40000000
76 #define OFW_PCI_PHYS_HI_ALIASED 0x20000000
77 #define OFW_PCI_PHYS_HI_SPACEMASK 0x03000000
78 #define OFW_PCI_PHYS_HI_BUSMASK 0x00ff0000
79 #define OFW_PCI_PHYS_HI_BUSSHIFT 16
80 #define OFW_PCI_PHYS_HI_DEVICEMASK 0x0000f800
81 #define OFW_PCI_PHYS_HI_DEVICESHIFT 11
82 #define OFW_PCI_PHYS_HI_FUNCTIONMASK 0x00000700
83 #define OFW_PCI_PHYS_HI_FUNCTIONSHIFT 8
84 #define OFW_PCI_PHYS_HI_REGISTERMASK 0x000000ff
85
86 #define OFW_PCI_PHYS_HI_SPACE_CONFIG 0x00000000
87 #define OFW_PCI_PHYS_HI_SPACE_IO 0x01000000
88 #define OFW_PCI_PHYS_HI_SPACE_MEM32 0x02000000
89 #define OFW_PCI_PHYS_HI_SPACE_MEM64 0x03000000
90
91 #define OFW_PCI_PHYS_HI_BUS(hi) \
92 (((hi) & OFW_PCI_PHYS_HI_BUSMASK) >> OFW_PCI_PHYS_HI_BUSSHIFT)
93 #define OFW_PCI_PHYS_HI_DEVICE(hi) \
94 (((hi) & OFW_PCI_PHYS_HI_DEVICEMASK) >> OFW_PCI_PHYS_HI_DEVICESHIFT)
95 #define OFW_PCI_PHYS_HI_FUNCTION(hi) \
96 (((hi) & OFW_PCI_PHYS_HI_FUNCTIONMASK) >> OFW_PCI_PHYS_HI_FUNCTIONSHIFT)
97
98 /*
99 * This has the 3 32bit cell values, plus 2 more to make up a 64-bit size.
100 */
101 struct ofw_pci_register {
102 u_int32_t phys_hi;
103 u_int32_t phys_mid;
104 u_int32_t phys_lo;
105 u_int32_t size_hi;
106 u_int32_t size_lo;
107 };
108
109 #endif /* _DEV_OFW_OFW_PCI_H_ */