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vmparam.h revision 1.14 
      1 /*	$NetBSD: vmparam.h,v 1.14 2002/12/10 05:14:33 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #ifndef _SH3_VMPARAM_H_
     40 #define	_SH3_VMPARAM_H_
     41 #include <sys/queue.h>
     42 
     43 /* Virtual address map. */
     44 #define	VM_MIN_ADDRESS		((vaddr_t)0)
     45 #define	VM_MAXUSER_ADDRESS	((vaddr_t)0x7ffff000)
     46 #define	VM_MAX_ADDRESS		((vaddr_t)0x7ffff000)
     47 #define	VM_MIN_KERNEL_ADDRESS	((vaddr_t)0xc0000000)
     48 #define	VM_MAX_KERNEL_ADDRESS	((vaddr_t)0xe0000000)
     49 
     50 /* top of stack */
     51 #define	USRSTACK		VM_MAXUSER_ADDRESS
     52 
     53 /* Virtual memory resoruce limit. */
     54 #define	MAXTSIZ			(64 * 1024 * 1024)	/* max text size */
     55 #ifndef MAXDSIZ
     56 #define	MAXDSIZ			(512 * 1024 * 1024)	/* max data size */
     57 #endif
     58 #ifndef	MAXSSIZ
     59 #define	MAXSSIZ			(32 * 1024 * 1024)	/* max stack size */
     60 #endif
     61 
     62 /* initial data size limit */
     63 #ifndef DFLDSIZ
     64 #define	DFLDSIZ			(128 * 1024 * 1024)
     65 #endif
     66 /* initial stack size limit */
     67 #ifndef	DFLSSIZ
     68 #define	DFLSSIZ			(2 * 1024 * 1024)
     69 #endif
     70 
     71 /*
     72  * Size of shared memory map
     73  */
     74 #ifndef SHMMAXPGS
     75 #define	SHMMAXPGS		1024
     76 #endif
     77 
     78 /* Size of user raw I/O map */
     79 #ifndef USRIOSIZE
     80 #define	USRIOSIZE		(MAXBSIZE / NBPG * 8)
     81 #endif
     82 
     83 #define	VM_PHYS_SIZE		(USRIOSIZE * NBPG)
     84 
     85 /* Physical memory segments */
     86 #define	VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
     87 #define	VM_PHYSSEG_NOADD
     88 
     89 #define	sh3_round_page(x)	((((u_int32_t)(x)) + PGOFSET) & ~PGOFSET)
     90 #define	sh3_trunc_page(x)	((u_int32_t)(x) & ~PGOFSET)
     91 #define	sh3_btop(x)		((u_int32_t)(x) >> PGSHIFT)
     92 #define	sh3_ptob(x)		((u_int32_t)(x) << PGSHIFT)
     93 
     94 /* pmap-specific data store in the vm_page structure. */
     95 #define	__HAVE_VM_PAGE_MD
     96 #define	PVH_REFERENCED		1
     97 #define	PVH_MODIFIED		2
     98 
     99 #ifndef _LOCORE
    100 struct pv_entry;
    101 struct vm_page_md {
    102 	SLIST_HEAD(, pv_entry) pvh_head;
    103 	int pvh_flags;
    104 };
    105 
    106 #define	VM_MDPAGE_INIT(pg)						\
    107 do {									\
    108 	struct vm_page_md *pvh = &(pg)->mdpage;				\
    109 	SLIST_INIT(&pvh->pvh_head);					\
    110 	pvh->pvh_flags = 0;						\
    111 } while (/*CONSTCOND*/0)
    112 #endif /* _LOCORE */
    113 #endif /* !_SH3_VMPARAM_H_ */
    114