b40ce4165d
Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
205 lines
6.5 KiB
C
205 lines
6.5 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: param.h,v 1.20 1997/09/19 13:52:53 leo Exp */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department and Ralph Campbell.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: machparam.h 1.11 89/08/14$
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*
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* @(#)param.h 8.1 (Berkeley) 6/10/93
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*/
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/*
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* Machine dependent constants for the IA64.
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*/
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_long and must be cast to
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* any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#ifndef _ALIGNBYTES
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#define _ALIGNBYTES 7
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#endif
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#ifndef _ALIGN
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#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
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#endif
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#ifndef _ALIGNED_POINTER
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#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
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#endif
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#ifndef _MACHINE
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#define _MACHINE ia64
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#endif
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#ifndef MACHINE
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#define MACHINE "ia64"
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#endif
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#ifndef _MACHINE_ARCH
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#define _MACHINE_ARCH ia64
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#endif
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#ifndef MACHINE_ARCH
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#define MACHINE_ARCH "ia64"
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#endif
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#define MID_MACHINE MID_IA64
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#include <machine/ia64_cpu.h>
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#include <machine/cpu.h>
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/*
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* OBJFORMAT_NAMES is a comma-separated list of the object formats
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* that are supported on the architecture.
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*/
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#define OBJFORMAT_NAMES "elf"
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#define OBJFORMAT_DEFAULT "elf"
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#ifdef SMP
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#define MAXCPU 16
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#else
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#define MAXCPU 1
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#endif
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is u_long and must be cast to
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* any desired pointer type.
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*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*
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*/
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
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#if !defined(PAGE_SIZE_4K) && !defined(PAGE_SIZE_8K) && !defined(PAGE_SIZE_16K)
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#define PAGE_SIZE_8K
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#endif
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#ifdef PAGE_SIZE_4K
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#define PAGE_SIZE 4096 /* bytes/page */
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#define PAGE_SHIFT 12
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#endif
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#ifdef PAGE_SIZE_8K
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#define PAGE_SIZE 8192 /* bytes/page */
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#define PAGE_SHIFT 13
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#endif
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#ifdef PAGE_SIZE_16K
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#define PAGE_SIZE 16384 /* bytes/page */
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#define PAGE_SHIFT 14
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#endif
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#define PAGE_MASK (PAGE_SIZE-1)
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define KERNBASE 0xfffffc0000300000LL /* start of kernel virtual */
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#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define DEV_BSIZE (1<<DEV_BSHIFT)
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#ifndef BLKDEV_IOSIZE
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#define BLKDEV_IOSIZE PAGE_SIZE /* default block device I/O size */
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#endif
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#define DFLTPHYS (64 * 1024) /* default max raw I/O transfer size */
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#define MAXPHYS (128 * 1024) /* max raw I/O transfer size */
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#define MAXDUMPPGS (DFLTPHYS/PAGE_SIZE)
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#define CLSIZE 1
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#define CLSIZELOG2 0
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/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
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#define SSIZE 1 /* initial stack size/NBPG */
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#define SINCR 1 /* increment of stack/NBPG */
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#define KSTACK_PAGES 4 /* pages of kernel stack */
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#define UAREA_PAGES 1 /* pages of u-area */
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/* #define KSTACK_GUARD */ /* compile in kstack guard page */
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than PAGE_SIZE.
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*/
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#ifndef MSIZE
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#define MSIZE 256 /* size of an mbuf */
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#endif /* MSIZE */
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#ifndef MCLSHIFT
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#define MCLSHIFT 11 /* convert bytes to mbuf clusters */
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#endif /* MCLSHIFT */
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#define MCLBYTES (1 << MCLSHIFT) /* size of a mbuf cluster */
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/*
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* Size of kernel malloc arena in CLBYTES-sized logical pages
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*/
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#ifndef NKMEMCLUSTERS
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#define NKMEMCLUSTERS (4096*1024/CLBYTES) /* XXX? */
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#endif
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/* pages ("clicks") to disk blocks */
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#define ctod(x) ((x) << (PAGE_SHIFT - DEV_BSHIFT))
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#define dtoc(x) ((x) >> (PAGE_SHIFT - DEV_BSHIFT))
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/* pages to bytes */
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#define ctob(x) ((x) << PAGE_SHIFT)
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#define btoc(x) (((x) + PAGE_MASK) >> PAGE_SHIFT)
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/* bytes to disk blocks */
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#define btodb(x) ((x) >> DEV_BSHIFT)
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#define dbtob(x) ((x) << DEV_BSHIFT)
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/*
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* Mach derived conversion macros
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*/
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#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
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#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
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#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define ia64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ia64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((x) * (PAGE_SIZE / 1024))
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