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      1  /*	$NetBSD: param.h,v 1.12 2023/10/06 11:45:37 skrll 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 
    130 static __inline void delay(unsigned int us) {}	/* XXXXX */
    131 
    132 #endif /* _LOCORE */
    133 #endif /* _KERNEL */
    134 
    135 #endif /* _IA64_PARAM_H_ */
    136