1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (c) 2001 David E. O'Brien
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
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 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 *
39 *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
40 * $FreeBSD$
41 */
42
43#ifndef _POWERPC_INCLUDE_PARAM_H_
44#define	_POWERPC_INCLUDE_PARAM_H_
45
46/*
47 * Machine dependent constants for PowerPC
48 */
49
50#include <machine/_align.h>
51
52/* Needed to display interrupts on OFW PCI */
53#define __PCI_REROUTE_INTERRUPT
54
55#ifndef MACHINE
56#define	MACHINE		"powerpc"
57#endif
58#ifndef MACHINE_ARCH
59#ifdef __powerpc64__
60#define	MACHINE_ARCH	"powerpc64"
61#else
62#ifdef	__SPE__
63#define	MACHINE_ARCH	"powerpcspe"
64#else
65#define	MACHINE_ARCH	"powerpc"
66#endif
67#endif
68#endif
69#define	MID_MACHINE	MID_POWERPC
70#ifdef __powerpc64__
71#ifndef	MACHINE_ARCH32
72#define	MACHINE_ARCH32	"powerpc"
73#endif
74#endif
75
76#if defined(SMP) || defined(KLD_MODULE)
77#ifndef MAXCPU
78#define	MAXCPU		256
79#endif
80#else
81#define	MAXCPU		1
82#endif /* SMP || KLD_MODULE */
83
84#ifndef MAXMEMDOM
85#define	MAXMEMDOM	1
86#endif
87
88#define	ALIGNBYTES	_ALIGNBYTES
89#define	ALIGN(p)	_ALIGN(p)
90/*
91 * ALIGNED_POINTER is a boolean macro that checks whether an address
92 * is valid to fetch data elements of type t from on this architecture.
93 * This does not reflect the optimal alignment, just the possibility
94 * (within reasonable limits).
95 */
96#define	ALIGNED_POINTER(p, t)	((((uintptr_t)(p)) & (sizeof (t) - 1)) == 0)
97
98/*
99 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
100 * architecture.  It should be used with appropriate caution.
101 */
102#define	CACHE_LINE_SHIFT	7
103#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
104
105#define	PAGE_SHIFT	12
106#define	PAGE_SIZE	(1L << PAGE_SHIFT)	/* Page size */
107#define	PAGE_MASK	(PAGE_SIZE - 1)
108#define	NPTEPG		(PAGE_SIZE/(sizeof (pt_entry_t)))
109
110#define	MAXPAGESIZES	1		/* maximum number of supported page sizes */
111
112#ifndef KSTACK_PAGES
113#ifdef __powerpc64__
114#define	KSTACK_PAGES		8		/* includes pcb */
115#else
116#define	KSTACK_PAGES		4		/* includes pcb */
117#endif
118#endif
119#define	KSTACK_GUARD_PAGES	1	/* pages of kstack guard; 0 disables */
120#define	USPACE		(kstack_pages * PAGE_SIZE)	/* total size of pcb */
121
122/*
123 * Mach derived conversion macros
124 */
125#define	trunc_page(x)		((x) & ~(PAGE_MASK))
126#define	round_page(x)		(((x) + PAGE_MASK) & ~PAGE_MASK)
127
128#define	atop(x)			((x) >> PAGE_SHIFT)
129#define	ptoa(x)			((x) << PAGE_SHIFT)
130
131#define	powerpc_btop(x)		((x) >> PAGE_SHIFT)
132#define	powerpc_ptob(x)		((x) << PAGE_SHIFT)
133
134#define	pgtok(x)		((x) * (PAGE_SIZE / 1024UL))
135
136#define btoc(x)			((vm_offset_t)(((x)+PAGE_MASK)>>PAGE_SHIFT))
137
138#endif /* !_POWERPC_INCLUDE_PARAM_H_ */
139