text: /*	$NetBSD: vmparam.h,v 1.26 2003/08/07 16:27:47 agc Exp $	*/
  
  /*-
   * Copyright (c) 1988 The Regents of the University of California.
   * All rights reserved.
   *
   * 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. 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.
   *
   * $FreeBSD: releng/9.3/sys/arm/include/vmparam.h 221855 2011-05-13 19:35:01Z mdf $
   */
  
  #ifndef	_MACHINE_VMPARAM_H_
  #define	_MACHINE_VMPARAM_H_
  
  
  /*#include <arm/arm32/vmparam.h>
  */
  /*
   * Address space constants
   */
  
  /*
   * The line between user space and kernel space
   * Mappings >= KERNEL_BASE are constant across all processes
   */
  #define	KERNBASE		0xc0000000
  
  /*
   * max number of non-contig chunks of physical RAM you can have
   */
  
  #define	VM_PHYSSEG_MAX		32
  
  /*
   * The physical address space is densely populated.
   */
  #define	VM_PHYSSEG_DENSE
  
  /*
   * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
   * from which physical pages are allocated and VM_FREEPOOL_DIRECT is
   * the pool from which physical pages for small UMA objects are
   * allocated.
   */
  #define	VM_NFREEPOOL		3
  #define	VM_FREEPOOL_CACHE	2
  #define	VM_FREEPOOL_DEFAULT	0
  #define	VM_FREEPOOL_DIRECT	1
  
  /*
   * we support 2 free lists:
   *
   *	- DEFAULT for all systems
   *	- ISADMA for the ISA DMA range on Sharks only
   */
  
  #define	VM_NFREELIST		2
  #define	VM_FREELIST_DEFAULT	0
  #define	VM_FREELIST_ISADMA	1
  
  /*
   * The largest allocation size is 1MB.
   */
  #define	VM_NFREEORDER		9
  
  /*
   * Only one memory domain.
   */
  #ifndef VM_NDOMAIN
  #define	VM_NDOMAIN		1
  #endif
  
  /*
   * Disable superpage reservations.
   */
  #ifndef	VM_NRESERVLEVEL
  #define	VM_NRESERVLEVEL		0
  #endif
  
  #define UPT_MAX_ADDRESS		VADDR(UPTPTDI + 3, 0)
  #define UPT_MIN_ADDRESS		VADDR(UPTPTDI, 0)
  
  #define VM_MIN_ADDRESS          (0x00001000)
  #ifdef ARM_USE_SMALL_ALLOC
  /* 
   * ARM_KERN_DIRECTMAP is used to make sure there's enough space between
   * VM_MAXUSER_ADDRESS and KERNBASE to map the whole memory.
   * It has to be a compile-time constant, even if arm_init_smallalloc(),
   * which will do the mapping, gets the real amount of memory at runtime,
   * because VM_MAXUSER_ADDRESS is a constant.
   */
  #ifndef ARM_KERN_DIRECTMAP
  #define ARM_KERN_DIRECTMAP 512 * 1024 * 1024 /* 512 MB */
  #endif
  #define VM_MAXUSER_ADDRESS	KERNBASE - ARM_KERN_DIRECTMAP
  #else /* ARM_USE_SMALL_ALLOC */
  #define VM_MAXUSER_ADDRESS      KERNBASE
  #endif /* ARM_USE_SMALL_ALLOC */
  #define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
  
  #define USRSTACK        VM_MAXUSER_ADDRESS
  
  /* initial pagein size of beginning of executable file */
  #ifndef VM_INITIAL_PAGEIN
  #define VM_INITIAL_PAGEIN       16
  #endif
  
  #ifndef VM_MIN_KERNEL_ADDRESS
  #define VM_MIN_KERNEL_ADDRESS KERNBASE
  #endif
  
  #define VM_MAX_KERNEL_ADDRESS	0xffffffff
  /*
   * Virtual size (bytes) for various kernel submaps.
   */
  
  #ifndef VM_KMEM_SIZE
  #define VM_KMEM_SIZE            (12*1024*1024)
  #endif
  
  #define MAXTSIZ 	(16*1024*1024)
  #define DFLDSIZ         (128*1024*1024)
  #define MAXDSIZ         (512*1024*1024)
  #define DFLSSIZ         (2*1024*1024)
  #define MAXSSIZ         (8*1024*1024)
  #define SGROWSIZ        (128*1024)
  
  #ifdef ARM_USE_SMALL_ALLOC
  #define UMA_MD_SMALL_ALLOC
  #endif /* ARM_USE_SMALL_ALLOC */
  
  #define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
  
  #endif	/* _MACHINE_VMPARAM_H_ */
  