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
54#if defined(SMP) || defined(KLD_MODULE)
55#ifndef MAXCPU
56#define	MAXCPU		96
57#endif
58#else
59#define	MAXCPU		1
60#endif /* SMP || KLD_MODULE */
61
62#ifndef MAXMEMDOM
63#define	MAXMEMDOM	1
64#endif
65
66#define	ALIGNBYTES	_ALIGNBYTES
67#define	ALIGN(p)	_ALIGN(p)
68/*
69 * ALIGNED_POINTER is a boolean macro that checks whether an address
70 * is valid to fetch data elements of type t from on this architecture.
71 * This does not reflect the optimal alignment, just the possibility
72 * (within reasonable limits).
73 */
74#define	ALIGNED_POINTER(p, t)	((((u_long)(p)) & (sizeof(t) - 1)) == 0)
75
76/*
77 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
78 * architecture.  It should be used with appropriate caution.
79 */
80#define	CACHE_LINE_SHIFT	6
81#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
82
83#define	PAGE_SHIFT	12
84#define	PAGE_SIZE	(1 << PAGE_SHIFT)	/* Page size */
85#define	PAGE_MASK	(PAGE_SIZE - 1)
86
87#define	PAGE_SHIFT_16K	14
88#define	PAGE_SIZE_16K	(1 << PAGE_SHIFT_16K)
89#define	PAGE_MASK_16K	(PAGE_SIZE_16K - 1)
90
91#define	PAGE_SHIFT_64K	16
92#define	PAGE_SIZE_64K	(1 << PAGE_SHIFT_64K)
93#define	PAGE_MASK_64K	(PAGE_SIZE_64K - 1)
94
95#define	MAXPAGESIZES	1		/* maximum number of supported page sizes */
96
97#ifndef KSTACK_PAGES
98#define	KSTACK_PAGES	4	/* pages of kernel stack (with pcb) */
99#endif
100
101#define	KSTACK_GUARD_PAGES	1	/* pages of kstack guard; 0 disables */
102#define	PCPU_PAGES		1
103
104/*
105 * Ceiling on size of buffer cache (really only effects write queueing,
106 * the VM page cache is not effected), can be changed via
107 * the kern.maxbcache /boot/loader.conf variable.
108 */
109#ifndef VM_BCACHE_SIZE_MAX
110#define	VM_BCACHE_SIZE_MAX      (400 * 1024 * 1024)
111#endif
112
113/*
114 * Mach derived conversion macros
115 */
116#define	round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
117#define	trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
118
119#define	atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
120#define	ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
121
122#define	arm64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
123#define	arm64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
124
125#define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
126
127#endif /* !_MACHINE_PARAM_H_ */
128