165 lines
5.6 KiB
C
165 lines
5.6 KiB
C
/*
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* Copyright (c) 2002 David E. O'Brien. All rights reserved.
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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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* @(#)param.h 8.1 (Berkeley) 6/10/93
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* $FreeBSD$
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*/
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/*
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* Machine dependent constants for AMD64.
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*/
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value
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* for all data types (int, long, ...). The result is u_long and
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* must be cast to 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 (sizeof(long) - 1)
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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 amd64
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#endif
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#ifndef _MACHINE_ARCH
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#define _MACHINE_ARCH amd64
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#endif
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#ifndef _NO_NAMESPACE_POLLUTION
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#ifndef _MACHINE_PARAM_H_
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#define _MACHINE_PARAM_H_
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#ifndef MACHINE
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#define MACHINE "amd64"
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#endif
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#ifndef MACHINE_ARCH
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#define MACHINE_ARCH "amd64"
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#endif
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#ifdef SMP
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#define MAXCPU 8
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#else
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#define MAXCPU 1
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#endif
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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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/* Size of the level 1 page table units */
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */
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#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
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#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
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#define PAGE_MASK (PAGE_SIZE-1)
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/* Size of the level 2 page directory units */
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#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
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#define NPDEPGSHIFT 9 /* LOG2(NPDEPG) */
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#define PDRSHIFT 21 /* LOG2(NBPDR) */
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#define NBPDR (1<<PDRSHIFT) /* bytes/page dir */
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#define PDRMASK (NBPDR-1)
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/* Size of the level 3 page directory pointer table units */
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#define NPDPEPG (PAGE_SIZE/(sizeof (pdp_entry_t)))
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#define NPDPEPGSHIFT 9 /* LOG2(NPDPEPG) */
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#define PDPSHIFT 30 /* LOG2(NBPDP) */
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#define NBPDP (1<<PDPSHIFT) /* bytes/page dir ptr table */
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#define PDPMASK (NBPDP-1)
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/* Size of the level 4 page-map level-4 table units */
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#define NPML4EPG (PAGE_SIZE/(sizeof (pml4_entry_t)))
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#define NPML4EPGSHIFT 9 /* LOG2(NPML4EPG) */
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#define PML4SHIFT 39 /* LOG2(NBPML4) */
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#define NBPML4 (1ul<<PML4SHIFT)/* bytes/page map lev4 table */
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#define PML4MASK (NBPML4-1)
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#define IOPAGES 2 /* pages of i/o permission bitmap */
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#ifndef KSTACK_PAGES
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#define KSTACK_PAGES 4 /* pages of kstack (with pcb) */
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#endif
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#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
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/*
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* Ceiling on amount of swblock kva space, can be changed via
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* the kern.maxswzone /boot/loader.conf variable.
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*/
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#ifndef VM_SWZONE_SIZE_MAX
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#define VM_SWZONE_SIZE_MAX (32 * 1024 * 1024)
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#endif
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/*
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* Ceiling on size of buffer cache (really only effects write queueing,
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* the VM page cache is not effected), can be changed via
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* the kern.maxbcache /boot/loader.conf variable.
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*/
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#ifndef VM_BCACHE_SIZE_MAX
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#define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024)
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#endif
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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 trunc_2mpage(x) ((unsigned long)(x) & ~PDRMASK)
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#define round_2mpage(x) ((((unsigned long)(x)) + PDRMASK) & ~PDRMASK)
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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 amd64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define amd64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
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#endif /* !_MACHINE_PARAM_H_ */
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#endif /* !_NO_NAMESPACE_POLLUTION */
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