1/* $NetBSD: param.h,v 1.3 2022/10/14 07:13:58 skrll Exp $ */
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef	_OR1K_PARAM_H_
33#define	_OR1K_PARAM_H_
34
35/*
36 * Machine dependent constants for all OpenRISC processors
37 */
38
39/*
40 * For KERNEL code:
41 *	MACHINE must be defined by the individual port.  This is so that
42 *	uname returns the correct thing, etc.
43 *
44 * For non-KERNEL code:
45 *	If ELF, MACHINE and MACHINE_ARCH are forced to "or1k/or1k".
46 */
47
48#define	_MACHINE_ARCH	or1k
49#define	MACHINE_ARCH	"or1k"
50#define	_MACHINE	or1k
51#define	MACHINE		"or1k"
52
53#define	MID_MACHINE	MID_OR1K
54
55/* OR1K-specific macro to align a stack pointer (downwards). */
56#define STACK_ALIGNBYTES	(__BIGGEST_ALIGNMENT__ - 1)
57#define	ALIGNBYTES32	__BIGGEST_ALIGNMENT__
58
59#define NKMEMPAGES_MAX_DEFAULT	((2048UL * 1024 * 1024) >> PAGE_SHIFT)
60#define NKMEMPAGES_MIN_DEFAULT	((128UL * 1024 * 1024) >> PAGE_SHIFT)
61
62#define PGSHIFT		13
63#define	NBPG		(1 << PGSHIFT)
64#define PGOFSET		(NBPG - 1)
65
66/*
67 * Constants related to network buffer management.
68 * MCLBYTES must be no larger than NBPG (the software page size), and
69 * NBPG % MCLBYTES must be zero.
70 */
71#define	MSIZE		512		/* size of an mbuf */
72
73#ifndef MCLSHIFT
74#define	MCLSHIFT	11		/* convert bytes to m_buf clusters */
75					/* 2K cluster can hold Ether frame */
76#endif	/* MCLSHIFT */
77
78#define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
79
80#ifdef _KERNEL
81void delay(unsigned long);
82#define	DELAY(x)	delay(x)
83#endif
84
85#endif /* _OR1K_PARAM_H_ */
86