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/*
* Copyright (c) 2002 David E. O'Brien. All rights reserved.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department and Ralph Campbell.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)param.h 8.1 (Berkeley) 6/10/93
* $FreeBSD$
*/
/*
* Machine dependent constants for AMD64.
*/
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is u_long and
* must be cast to any desired pointer type.
*
* ALIGNED_POINTER is a boolean macro that checks whether an address
* is valid to fetch data elements of type t from on this architecture.
* This does not reflect the optimal alignment, just the possibility
* (within reasonable limits).
*
*/
#ifndef _ALIGNBYTES
#define _ALIGNBYTES (sizeof(long) - 1)
#endif
#ifndef _ALIGN
#define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
#endif
#ifndef _ALIGNED_POINTER
#define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#endif
#ifndef _MACHINE
#define _MACHINE amd64
#endif
#ifndef _MACHINE_ARCH
#define _MACHINE_ARCH amd64
#endif
#ifndef _NO_NAMESPACE_POLLUTION
#ifndef _MACHINE_PARAM_H_
#define _MACHINE_PARAM_H_
#ifndef MACHINE
#define MACHINE "amd64"
#endif
#ifndef MACHINE_ARCH
#define MACHINE_ARCH "amd64"
#endif
#define MAXCPU 1
#define ALIGNBYTES _ALIGNBYTES
#define ALIGN(p) _ALIGN(p)
#define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
/* Size of the level 1 page table units */
#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
#define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */
#define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
#define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
#define PAGE_MASK (PAGE_SIZE-1)
/* Size of the level 2 page directory units */
#define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
#define NPDEPGSHIFT 9 /* LOG2(NPDEPG) */
#define PDRSHIFT 21 /* LOG2(NBPDR) */
#define NBPDR (1<<PDRSHIFT) /* bytes/page dir */
#define PDRMASK (NBPDR-1)
/* Size of the level 3 page directory pointer table units */
#define NPDPEPG (PAGE_SIZE/(sizeof (pdp_entry_t)))
#define NPDPEPGSHIFT 9 /* LOG2(NPDPEPG) */
#define PDPSHIFT 30 /* LOG2(NBPDP) */
#define NBPDP (1<<PDPSHIFT) /* bytes/page dir ptr table */
#define PDPMASK (NBPDP-1)
/* Size of the level 4 page-map level-4 table units */
#define NPML4EPG (PAGE_SIZE/(sizeof (pml4_entry_t)))
#define NPML4EPGSHIFT 9 /* LOG2(NPML4EPG) */
#define PML4SHIFT 39 /* LOG2(NBPML4T) */
#define NBPML4T (1ul<<PML4SHIFT)/* bytes/page map lev4 table */
#define PML4MASK (NBPML4T-1)
#define IOPAGES 2 /* pages of i/o permission bitmap */
#ifndef KSTACK_PAGES
#define KSTACK_PAGES 4 /* pages of kstack (with pcb) */
#endif
#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
#define UAREA_PAGES 1 /* holds struct user WITHOUT PCB (see def.) */
/*
* Ceiling on amount of swblock kva space, can be changed via
* the kern.maxswzone /boot/loader.conf variable.
*/
#ifndef VM_SWZONE_SIZE_MAX
#define VM_SWZONE_SIZE_MAX (32 * 1024 * 1024)
#endif
/*
* Ceiling on size of buffer cache (really only effects write queueing,
* the VM page cache is not effected), can be changed via
* the kern.maxbcache /boot/loader.conf variable.
*/
#ifndef VM_BCACHE_SIZE_MAX
#define VM_BCACHE_SIZE_MAX (200 * 1024 * 1024)
#endif
/*
* Mach derived conversion macros
*/
#define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
#define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
#define trunc_2mpage(x) ((unsigned long)(x) & ~PDRMASK)
#define round_2mpage(x) ((((unsigned long)(x)) + PDRMASK) & ~PDRMASK)
#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
#define amd64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
#define amd64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
#endif /* !_MACHINE_PARAM_H_ */
#endif /* !_NO_NAMESPACE_POLLUTION */
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