ofw_pci.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
3 *
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 *	from: NetBSD: ofw_pci.h,v 1.5 2003/10/22 09:04:39 mjl Exp
33 *
34 * $FreeBSD: stable/11/sys/dev/ofw/ofw_pci.h 330897 2018-03-14 03:19:51Z eadler $
35 */
36
37#ifndef _DEV_OFW_OFW_PCI_H_
38#define	_DEV_OFW_OFW_PCI_H_
39
40/*
41 * PCI Bus Binding to:
42 *
43 * IEEE Std 1275-1994
44 * Standard for Boot (Initialization Configuration) Firmware
45 *
46 * Revision 2.1
47 */
48
49/*
50 * Section 2.2.1. Physical Address Formats
51 *
52 * A PCI physical address is represented by 3 address cells:
53 *
54 *	phys.hi cell:	npt000ss bbbbbbbb dddddfff rrrrrrrr
55 *	phys.mid cell:	hhhhhhhh hhhhhhhh hhhhhhhh hhhhhhhh
56 *	phys.lo cell:	llllllll llllllll llllllll llllllll
57 *
58 *	n	nonrelocatable
59 *	p	prefetchable
60 *	t	aliased below 1MB (memory) or 64k (i/o)
61 *	ss	space code
62 *	b	bus number
63 *	d	device number
64 *	f	function number
65 *	r	register number
66 *	h	high 32-bits of PCI address
67 *	l	low 32-bits of PCI address
68 */
69
70#define	OFW_PCI_PHYS_HI_NONRELOCATABLE	0x80000000
71#define	OFW_PCI_PHYS_HI_PREFETCHABLE	0x40000000
72#define	OFW_PCI_PHYS_HI_ALIASED		0x20000000
73#define	OFW_PCI_PHYS_HI_SPACEMASK	0x03000000
74#define	OFW_PCI_PHYS_HI_BUSMASK		0x00ff0000
75#define	OFW_PCI_PHYS_HI_BUSSHIFT	16
76#define	OFW_PCI_PHYS_HI_DEVICEMASK	0x0000f800
77#define	OFW_PCI_PHYS_HI_DEVICESHIFT	11
78#define	OFW_PCI_PHYS_HI_FUNCTIONMASK	0x00000700
79#define	OFW_PCI_PHYS_HI_FUNCTIONSHIFT	8
80#define	OFW_PCI_PHYS_HI_REGISTERMASK	0x000000ff
81
82#define	OFW_PCI_PHYS_HI_SPACE_CONFIG	0x00000000
83#define	OFW_PCI_PHYS_HI_SPACE_IO	0x01000000
84#define	OFW_PCI_PHYS_HI_SPACE_MEM32	0x02000000
85#define	OFW_PCI_PHYS_HI_SPACE_MEM64	0x03000000
86
87#define OFW_PCI_PHYS_HI_BUS(hi) \
88	(((hi) & OFW_PCI_PHYS_HI_BUSMASK) >> OFW_PCI_PHYS_HI_BUSSHIFT)
89#define OFW_PCI_PHYS_HI_DEVICE(hi) \
90	(((hi) & OFW_PCI_PHYS_HI_DEVICEMASK) >> OFW_PCI_PHYS_HI_DEVICESHIFT)
91#define OFW_PCI_PHYS_HI_FUNCTION(hi) \
92	(((hi) & OFW_PCI_PHYS_HI_FUNCTIONMASK) >> OFW_PCI_PHYS_HI_FUNCTIONSHIFT)
93
94/*
95 * This has the 3 32bit cell values, plus 2 more to make up a 64-bit size.
96 */
97struct ofw_pci_register {
98	u_int32_t	phys_hi;
99	u_int32_t	phys_mid;
100	u_int32_t	phys_lo;
101	u_int32_t	size_hi;
102	u_int32_t	size_lo;
103};
104
105#endif /* _DEV_OFW_OFW_PCI_H_ */
106