2 /* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */
5 * Copyright (c) 1988 University of Utah.
6 * Copyright (c) 1992, 1993
7 * The Regents of the University of California. All rights reserved.
9 * This code is derived from software contributed to Berkeley by
10 * the Systems Programming Group of the University of Utah Computer
11 * Science Department and Ralph Campbell.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * from: Utah $Hdr: machparam.h 1.11 89/08/14$
39 * @(#)param.h 8.1 (Berkeley) 6/10/93
42 #ifndef _IA64_INCLUDE_PARAM_H_
43 #define _IA64_INCLUDE_PARAM_H_
46 * Machine dependent constants for the IA64.
49 #include <machine/_align.h>
52 #define __PCI_REROUTE_INTERRUPT
55 #define MACHINE "ia64"
58 #define MACHINE_ARCH "ia64"
60 #ifndef MACHINE_ARCH32
61 #define MACHINE_ARCH32 "i386"
64 #if defined(SMP) || defined(KLD_MODULE)
76 #define ALIGNBYTES _ALIGNBYTES
77 #define ALIGN(p) _ALIGN(p)
79 * ALIGNED_POINTER is a boolean macro that checks whether an address
80 * is valid to fetch data elements of type t from on this architecture.
81 * This does not reflect the optimal alignment, just the possibility
82 * (within reasonable limits).
84 #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
87 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
88 * architecture. It should be used with appropriate caution.
90 #define CACHE_LINE_SHIFT 7
91 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
93 #ifndef LOG2_PAGE_SIZE
94 #define LOG2_PAGE_SIZE 13 /* 8K pages by default. */
96 #define PAGE_SHIFT (LOG2_PAGE_SIZE)
97 #define PAGE_SIZE (1<<(LOG2_PAGE_SIZE))
98 #define PAGE_MASK (PAGE_SIZE-1)
99 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
101 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */
104 #define KSTACK_PAGES 4 /* pages of kernel stack */
106 #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */
108 /* The default size of identity mappings in region 6 & 7. */
109 #ifndef LOG2_ID_PAGE_SIZE
110 #define LOG2_ID_PAGE_SIZE 16
114 * Mach derived conversion macros
116 #define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
117 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
119 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
120 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
122 #define pgtok(x) ((x) * (PAGE_SIZE / 1024))
128 #endif /* !_IA64_INCLUDE_PARAM_H_ */