1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
30 * $FreeBSD$
31 */
32
33#ifndef _MACHINE_PARAM_H_
34#define	_MACHINE_PARAM_H_
35
36/*
37 * Machine dependent constants for arm64.
38 */
39
40#include <machine/_align.h>
41
42#define	STACKALIGNBYTES	(16 - 1)
43#define	STACKALIGN(p)	((uint64_t)(p) & ~STACKALIGNBYTES)
44
45#define	__PCI_REROUTE_INTERRUPT
46
47#ifndef MACHINE
48#define	MACHINE		"arm64"
49#endif
50#ifndef MACHINE_ARCH
51#define	MACHINE_ARCH	"aarch64"
52#endif
53#ifndef MACHINE_ARCH32
54#define	MACHINE_ARCH32	"armv7"
55#endif
56
57#if defined(SMP) || defined(KLD_MODULE)
58#ifndef MAXCPU
59#define	MAXCPU		256
60#endif
61#else
62#define	MAXCPU		1
63#endif /* SMP || KLD_MODULE */
64
65#ifndef MAXMEMDOM
66#define	MAXMEMDOM	2
67#endif
68
69#define	ALIGNBYTES	_ALIGNBYTES
70#define	ALIGN(p)	_ALIGN(p)
71/*
72 * ALIGNED_POINTER is a boolean macro that checks whether an address
73 * is valid to fetch data elements of type t from on this architecture.
74 * This does not reflect the optimal alignment, just the possibility
75 * (within reasonable limits).
76 */
77#define	ALIGNED_POINTER(p, t)	((((u_long)(p)) & (sizeof(t) - 1)) == 0)
78
79/*
80 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
81 * architecture.  It should be used with appropriate caution.
82 */
83#define	CACHE_LINE_SHIFT	7
84#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
85
86#define	PAGE_SHIFT	12
87#define	PAGE_SIZE	(1 << PAGE_SHIFT)	/* Page size */
88#define	PAGE_MASK	(PAGE_SIZE - 1)
89
90#define	PAGE_SHIFT_16K	14
91#define	PAGE_SIZE_16K	(1 << PAGE_SHIFT_16K)
92#define	PAGE_MASK_16K	(PAGE_SIZE_16K - 1)
93
94#define	PAGE_SHIFT_64K	16
95#define	PAGE_SIZE_64K	(1 << PAGE_SHIFT_64K)
96#define	PAGE_MASK_64K	(PAGE_SIZE_64K - 1)
97
98#define	MAXPAGESIZES	2		/* maximum number of supported page sizes */
99
100#ifndef KSTACK_PAGES
101#define	KSTACK_PAGES	4	/* pages of kernel stack (with pcb) */
102#endif
103
104#define	KSTACK_GUARD_PAGES	1	/* pages of kstack guard; 0 disables */
105#define	PCPU_PAGES		1
106
107/*
108 * Ceiling on size of buffer cache (really only effects write queueing,
109 * the VM page cache is not effected), can be changed via
110 * the kern.maxbcache /boot/loader.conf variable.
111 */
112#ifndef VM_BCACHE_SIZE_MAX
113#define	VM_BCACHE_SIZE_MAX      (400 * 1024 * 1024)
114#endif
115
116/*
117 * Mach derived conversion macros
118 */
119#define	round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
120#define	trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
121
122#define	atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
123#define	ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
124
125#define	arm64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
126#define	arm64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
127
128#define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
129
130#endif /* !_MACHINE_PARAM_H_ */
131