StdLib/Include/Ipf/machine/param.h

   1 /*      $NetBSD: param.h,v 1.2 2006/08/28 13:43:35 yamt 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 /*
  41  * Machine dependent constants for Intel Itanium.
  42  */
  43
  44 #define _MACHINE        ia64
  45 #define MACHINE         "ia64"
  46 #define _MACHINE_ARCH   ia64
  47 #define MACHINE_ARCH    "ia64"
  48 #define MID_MACHINE     MID_IA64
  49
  50 #ifdef SMP
  51 #define MAXCPU          16
  52 #else
  53 #define MAXCPU          1
  54 #endif
  55
  56 #define DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
  57 #define DEV_BSIZE       (1<<DEV_BSHIFT)
  58 #define BLKDEV_IOSIZE   2048
  59
  60 #ifndef MAXPHYS
  61 #define MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
  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 /*
  77  * Round p (pointer or byte index) up to a correctly-aligned value
  78  * for all data types (int, long, ...).   The result is u_int and
  79  * must be cast to any desired pointer type.
  80  *
  81  * ALIGNED_POINTER is a boolean macro that checks whether an address
  82  * is valid to fetch data elements of type t from on this architecture.
  83  * This does not reflect the optimal alignment, just the possibility
  84  * (within reasonable limits).
  85  *
  86  */
  87
  88 #define ALIGNBYTES              15
  89 #define ALIGN(p)                (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES)
  90 #define ALIGNED_POINTER(p,t)    ((((u_long)(p)) & (sizeof(t)-1)) == 0)
  91
  92 #define ALIGNBYTES32            (sizeof(int) - 1)
  93 #define ALIGN32(p)              (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32)
  94
  95 #define PGSHIFT         14              /* LOG2(NBPG) */
  96 #define NBPG            (1 << PGSHIFT)  /* bytes/page */
  97 #define PGOFSET         (NBPG-1)        /* byte offset into page */
  98 #define NPTEPG          (NBPG/(sizeof (pt_entry_t)))
  99 /*
 100  * Constants related to network buffer management.
 101  * MCLBYTES must be no larger than NBPG (the software page size), and,
 102  * on machines that exchange pages of input or output buffers with mbuf
 103  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
 104  * of the hardware page size.
 105  */
 106 #define MSIZE           256             /* size of an mbuf */
 107
 108 #ifndef MCLSHIFT
 109 #define MCLSHIFT        11              /* convert bytes to m_buf clusters */
 110                                         /* 2K cluster can hold Ether frame */
 111 #endif  /* MCLSHIFT */
 112
 113 #define MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */
 114
 115 #ifndef NMBCLUSTERS
 116 #if defined(_KERNEL_OPT)
 117 #include "opt_gateway.h"
 118 #endif
 119
 120 #ifdef GATEWAY
 121 #define NMBCLUSTERS     2048            /* map size, max cluster allocation */
 122 #else
 123 #define NMBCLUSTERS     1024            /* map size, max cluster allocation */
 124 #endif
 125 #endif
 126
 127 /*
 128  * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
 129  * logical pages.
 130  */
 131 #define NKMEMPAGES_MIN_DEFAULT  ((12 * 1024 * 1024) >> PAGE_SHIFT)
 132 #define NKMEMPAGES_MAX_DEFAULT  ((128 * 1024 * 1024) >> PAGE_SHIFT)
 133
 134 /*
 135  * Mach derived conversion macros
 136  */
 137
 138 #define ia64_round_page(x)   ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG - 1))
 139 #define ia64_trunc_page(x)   ((unsigned long)(x) & ~(NBPG - 1))
 140
 141 #define ia64_btop(x)            ((unsigned long)(x) >> PGSHIFT)
 142 #define ia64_ptob(x)            ((unsigned long)(x) << PGSHIFT)
 143
 144 #ifdef _KERNEL
 145 #ifndef _LOCORE
 146
 147 #include <machine/intr.h>
 148
 149 #endif /* _LOCORE */
 150 #endif /* _KERNEL */
 151
 152 #endif /* _IA64_PARAM_H_ */