1 /* $NetBSD: param.h,v 1.11 2021/05/31 14:38:55 simonb Exp $ */
2
3 /*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
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 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)param.h 5.8 (Berkeley) 6/28/91
35 */
36
37 #ifndef _IA64_PARAM_H_
38 #define _IA64_PARAM_H_
39
40 #ifdef _KERNEL_OPT
41 #include "opt_param.h"
42 #endif
43
44 /*
45 * Machine dependent constants for Intel Itanium.
46 */
47
48 #ifdef _KERNEL
49 #include <machine/cpu.h>
50 #endif
51
52 #define _MACHINE ia64
53 #define MACHINE "ia64"
54 #define _MACHINE_ARCH ia64
55 #define MACHINE_ARCH "ia64"
56 #define MID_MACHINE MID_IA64
57
58 #ifdef MULTIPROCESSOR
59 #define MAXCPU 16
60 #else
61 #define MAXCPU 1
62 #endif
63
64 #define UPAGES 4
65 #define USPACE (UPAGES * NBPG) /* total size of u-area */
66
67 #ifndef MSGBUFSIZE
68 #define MSGBUFSIZE NBPG /* default message buffer size */
69 #endif
70
71 #ifndef KSTACK_PAGES
72 #define KSTACK_PAGES 4 /* pages of kernel stack */
73 #endif
74 #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */
75
76 #define ALIGNBYTES32 (sizeof(int) - 1)
77 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
78
79 #ifndef LOG2_PAGE_SIZE
80 #define LOG2_PAGE_SIZE 14 /* 16K pages by default. */
81 #endif
82 #define PGSHIFT 14 /* LOG2(NBPG) */
83 #define NBPG (1 << PGSHIFT) /* bytes/page */
84 #define PGOFSET (NBPG-1) /* byte offset into page */
85 #define NPTEPG (NBPG/(sizeof (pt_entry_t)))
86 /*
87 * Constants related to network buffer management.
88 * MCLBYTES must be no larger than NBPG (the software page size), and,
89 * on machines that exchange pages of input or output buffers with mbuf
90 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
91 * of the hardware page size.
92 */
93 #define MSIZE 256 /* size of an mbuf */
94
95 #ifndef MCLSHIFT
96 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */
97 /* 2K cluster can hold Ether frame */
98 #endif /* MCLSHIFT */
99
100 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
101
102 /*
103 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
104 * logical pages.
105 * No enforced maxmimum an ia64
106 */
107 #define NKMEMPAGES_MIN_DEFAULT ((32 * 1024 * 1024) >> PAGE_SHIFT)
108 #define NKMEMPAGES_MAX_UNLIMITED 1
109
110 /* The default size of identity mappings in region 6 & 7. */
111 #ifndef LOG2_ID_PAGE_SIZE
112 #define LOG2_ID_PAGE_SIZE 16
113 #endif
114
115 /*
116 * Mach derived conversion macros
117 */
118
119 #define ia64_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG - 1))
120 #define ia64_trunc_page(x) ((unsigned long)(x) & ~(NBPG - 1))
121
122 #define ia64_btop(x) ((unsigned long)(x) >> PGSHIFT)
123 #define ia64_ptob(x) ((unsigned long)(x) << PGSHIFT)
124
125 #ifdef _KERNEL
126 #ifndef _LOCORE
127
128 #include <machine/intr.h>
129
delay(unsigned int us)130 static __inline void delay(unsigned int us) {} /* XXXXX */
131
132 #endif /* _LOCORE */
133 #endif /* _KERNEL */
134
135 #endif /* _IA64_PARAM_H_ */
136