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vmparam.h revision 1.22 
      1 /*	$NetBSD: vmparam.h,v 1.22 2003/08/07 16:27:20 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1988 The Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #ifndef	_ARM32_VMPARAM_H_
     33 #define	_ARM32_VMPARAM_H_
     34 
     35 #ifdef _KERNEL
     36 
     37 #include <arm/arm32/vmparam.h>
     38 
     39 /*
     40  * Address space constants
     41  */
     42 
     43 /*
     44  * The line between user space and kernel space
     45  * Mappings >= KERNEL_BASE are constant across all processes
     46  */
     47 #define	KERNEL_BASE		0xc0000000
     48 
     49 /*
     50  * Override the default pager_map size, there's not enough KVA.
     51  */
     52 #define PAGER_MAP_SIZE		(4 * 1024 * 1024)
     53 
     54 /*
     55  * Size of User Raw I/O map
     56  */
     57 
     58 #define USRIOSIZE       300
     59 
     60 /* virtual sizes (bytes) for various kernel submaps */
     61 
     62 #define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)
     63 
     64 /*
     65  * max number of non-contig chunks of physical RAM you can have
     66  */
     67 
     68 #define	VM_PHYSSEG_MAX		32
     69 
     70 /*
     71  * when converting a physical address to a vm_page structure, we
     72  * want to use a binary search on the chunks of physical memory
     73  * to find our RAM
     74  */
     75 
     76 #define	VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
     77 
     78 /*
     79  * this indicates that we can't add RAM to the VM system after the
     80  * vm system is init'd.
     81  */
     82 
     83 #define	VM_PHYSSEG_NOADD
     84 
     85 /*
     86  * we support 2 free lists:
     87  *
     88  *	- DEFAULT for all systems
     89  *	- ISADMA for the ISA DMA range on Sharks only
     90  */
     91 
     92 #define	VM_NFREELIST		2
     93 #define	VM_FREELIST_DEFAULT	0
     94 #define	VM_FREELIST_ISADMA	1
     95 
     96 #endif /* _KERNEL */
     97 
     98 #endif	/* _ARM32_VMPARAM_H_ */
     99