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vmparam.h revision 1.27
      1  1.27  christos /*	$NetBSD: vmparam.h,v 1.27 2012/02/17 16:45:46 christos Exp $	*/
      2   1.1      matt 
      3   1.1      matt /*
      4   1.1      matt  * Copyright (c) 1988 The Regents of the University of California.
      5   1.1      matt  * All rights reserved.
      6   1.1      matt  *
      7   1.1      matt  * Redistribution and use in source and binary forms, with or without
      8   1.1      matt  * modification, are permitted provided that the following conditions
      9   1.1      matt  * are met:
     10   1.1      matt  * 1. Redistributions of source code must retain the above copyright
     11   1.1      matt  *    notice, this list of conditions and the following disclaimer.
     12   1.1      matt  * 2. Redistributions in binary form must reproduce the above copyright
     13   1.1      matt  *    notice, this list of conditions and the following disclaimer in the
     14   1.1      matt  *    documentation and/or other materials provided with the distribution.
     15  1.22       agc  * 3. Neither the name of the University nor the names of its contributors
     16   1.1      matt  *    may be used to endorse or promote products derived from this software
     17   1.1      matt  *    without specific prior written permission.
     18   1.1      matt  *
     19   1.1      matt  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20   1.1      matt  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21   1.1      matt  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22   1.1      matt  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23   1.1      matt  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24   1.1      matt  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25   1.1      matt  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26   1.1      matt  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27   1.1      matt  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28   1.1      matt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29   1.1      matt  * SUCH DAMAGE.
     30   1.1      matt  */
     31   1.1      matt 
     32   1.1      matt #ifndef	_ARM32_VMPARAM_H_
     33   1.1      matt #define	_ARM32_VMPARAM_H_
     34   1.1      matt 
     35  1.27  christos #if defined(_KERNEL) || defined(_KMEMUSER)
     36   1.3   thorpej 
     37   1.3   thorpej #include <arm/arm32/vmparam.h>
     38   1.1      matt 
     39   1.1      matt /*
     40   1.1      matt  * Address space constants
     41   1.1      matt  */
     42   1.1      matt 
     43   1.1      matt /*
     44   1.1      matt  * The line between user space and kernel space
     45  1.11   thorpej  * Mappings >= KERNEL_BASE are constant across all processes
     46   1.1      matt  */
     47  1.25      matt #ifdef KERNEL_BASE_EXT
     48  1.25      matt #define	KERNEL_BASE		KERNEL_BASE_EXT
     49  1.25      matt #else
     50  1.25      matt #define	KERNEL_BASE		0x80000000
     51  1.25      matt #endif
     52   1.1      matt 
     53   1.1      matt /*
     54   1.1      matt  * Override the default pager_map size, there's not enough KVA.
     55   1.1      matt  */
     56  1.24      yamt #define PAGER_MAP_DEFAULT_SIZE		(4 * 1024 * 1024)
     57   1.1      matt 
     58   1.1      matt /*
     59   1.1      matt  * Size of User Raw I/O map
     60   1.1      matt  */
     61   1.1      matt 
     62   1.1      matt #define USRIOSIZE       300
     63   1.1      matt 
     64   1.1      matt /* virtual sizes (bytes) for various kernel submaps */
     65   1.1      matt 
     66  1.14   thorpej #define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)
     67   1.1      matt 
     68   1.1      matt /*
     69   1.1      matt  * max number of non-contig chunks of physical RAM you can have
     70   1.1      matt  */
     71   1.1      matt 
     72   1.1      matt #define	VM_PHYSSEG_MAX		32
     73   1.1      matt 
     74   1.1      matt /*
     75   1.1      matt  * when converting a physical address to a vm_page structure, we
     76   1.1      matt  * want to use a binary search on the chunks of physical memory
     77   1.1      matt  * to find our RAM
     78   1.1      matt  */
     79   1.1      matt 
     80   1.1      matt #define	VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
     81   1.1      matt 
     82   1.1      matt /*
     83   1.1      matt  * we support 2 free lists:
     84   1.1      matt  *
     85   1.1      matt  *	- DEFAULT for all systems
     86   1.1      matt  *	- ISADMA for the ISA DMA range on Sharks only
     87   1.1      matt  */
     88   1.1      matt 
     89   1.1      matt #define	VM_NFREELIST		2
     90   1.1      matt #define	VM_FREELIST_DEFAULT	0
     91   1.1      matt #define	VM_FREELIST_ISADMA	1
     92  1.13   thorpej 
     93  1.27  christos #endif /* _KERNEL || _KMEMUSER */
     94   1.1      matt 
     95   1.1      matt #endif	/* _ARM32_VMPARAM_H_ */
     96