StdLib/Include/Ipf/machine/vmparam.h

   1 /*      $NetBSD: vmparam.h,v 1.2 2006/07/03 17:01:45 cherry Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)vmparam.h   5.9 (Berkeley) 5/12/91
  35  */
  36
  37 #ifndef _VMPARAM_H_
  38 #define _VMPARAM_H_
  39
  40 #include <sys/tree.h>
  41
  42 #define USRSTACK        VM_MAX_ADDRESS /* XXX: Revisit vm address space. */
  43
  44 /*
  45  * Virtual memory related constants, all in bytes
  46  */
  47 #ifndef MAXTSIZ
  48 #define MAXTSIZ         (1<<30)                 /* max text size (1G) */
  49 #endif
  50 #ifndef DFLDSIZ
  51 #define DFLDSIZ         (1<<27)                 /* initial data size (128M) */
  52 #endif
  53 #ifndef MAXDSIZ
  54 #define MAXDSIZ         (1<<30)                 /* max data size (1G) */
  55 #endif
  56 #ifndef DFLSSIZ
  57 #define DFLSSIZ         (1<<21)                 /* initial stack size (2M) */
  58 #endif
  59 #ifndef MAXSSIZ
  60 #define MAXSSIZ         (1<<28)                 /* max stack size (256M) */
  61 #endif
  62 #ifndef SGROWSIZ
  63 #define SGROWSIZ        (128UL*1024)            /* amount to grow stack */
  64 #endif
  65
  66
  67
  68 /*
  69  * PTEs for mapping user space into the kernel for phyio operations.
  70  * 64 pte's are enough to cover 8 disks * MAXBSIZE.
  71  */
  72 #ifndef USRIOSIZE
  73 #define USRIOSIZE       64
  74 #endif
  75
  76 /*
  77  * Manipulating region bits of an address.
  78  */
  79 #define IA64_RR_BASE(n)         (((u_int64_t) (n)) << 61)
  80 #define IA64_RR_MASK(x)         ((x) & ((1L << 61) - 1))
  81
  82 #define IA64_PHYS_TO_RR6(x)     ((x) | IA64_RR_BASE(6))
  83 #define IA64_PHYS_TO_RR7(x)     ((x) | IA64_RR_BASE(7))
  84
  85 #define IA64_ID_PAGE_SHIFT      28              /* 256M */
  86 #define IA64_ID_PAGE_SIZE       (1 << IA64_ID_PAGE_SHIFT)
  87 #define IA64_ID_PAGE_MASK       (IA64_ID_PAGE_SIZE-1)
  88
  89 #define IA64_BACKINGSTORE       IA64_RR_BASE(4)
  90
  91 #define PAGE_SHIFT      14              /* 16K pages by default. */
  92 #define PAGE_SIZE       (1 << PAGE_SHIFT)
  93 #define PAGE_MASK       (PAGE_SIZE - 1)
  94
  95 /* user/kernel map constants */
  96 #define VM_MIN_ADDRESS          ((vaddr_t)0)
  97 #define VM_MAX_ADDRESS          ((vaddr_t) IA64_RR_BASE(5))
  98 #define VM_GATEWAY_SIZE         PAGE_SIZE
  99 #define VM_MAXUSER_ADDRESS      (VM_MAX_ADDRESS + VM_GATEWAY_SIZE)
 100 #define VM_MIN_KERNEL_ADDRESS   VM_MAXUSER_ADDRESS
 101 #define VM_MAX_KERNEL_ADDRESS   ((vaddr_t) (IA64_RR_BASE(6) - 1))
 102
 103 #define VM_PHYSSEG_MAX          16              /* XXX: */
 104 #define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH
 105 #define VM_PHYSSEG_NOADD                        /* no more after vm_mem_init */
 106
 107 #define VM_NFREELIST            1 /* XXX: */
 108 #define VM_FREELIST_DEFAULT     0 /* XXX: */
 109
 110 /* virtual sizes (bytes) for various kernel submaps */
 111 #define VM_PHYS_SIZE            (USRIOSIZE*PAGE_SIZE)
 112
 113 #ifndef _LOCORE
 114 /*
 115  * pmap-specific data store in the vm_page structure.
 116  */
 117 #define __HAVE_VM_PAGE_MD
 118 struct vm_page_md {
 119         TAILQ_HEAD(,pv_entry) pv_list;          /* pv_entry list */
 120         int pv_list_count;
 121         struct simplelock pv_slock;             /* lock on this head */
 122         int pvh_attrs;                          /* page attributes */
 123 };
 124
 125 #define VM_MDPAGE_INIT(pg)                                              \
 126 do {                                                                    \
 127         TAILQ_INIT(&(pg)->mdpage.pv_list);                              \
 128         simple_lock_init(&(pg)->mdpage.pv_slock);                       \
 129 } while (/*CONSTCOND*/0)
 130 #endif /*_LOCORE*/
 131
 132 #endif /* _VMPARAM_H_ */