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Annotation of sys/arch/hppa/include/vmparam.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: vmparam.h,v 1.33 2006/06/04 17:21:24 miod Exp $       */
                      2:
                      3: /*
                      4:  * Copyright (c) 1988-1994, The University of Utah and
                      5:  * the Computer Systems Laboratory at the University of Utah (CSL).
                      6:  * All rights reserved.
                      7:  *
                      8:  * Permission to use, copy, modify and distribute this software is hereby
                      9:  * granted provided that (1) source code retains these copyright, permission,
                     10:  * and disclaimer notices, and (2) redistributions including binaries
                     11:  * reproduce the notices in supporting documentation, and (3) all advertising
                     12:  * materials mentioning features or use of this software display the following
                     13:  * acknowledgement: ``This product includes software developed by the
                     14:  * Computer Systems Laboratory at the University of Utah.''
                     15:  *
                     16:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
                     17:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
                     18:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     19:  *
                     20:  * CSL requests users of this software to return to csl-dist@cs.utah.edu any
                     21:  * improvements that they make and grant CSL redistribution rights.
                     22:  *
                     23:  *     Utah $Hdr: vmparam.h 1.16 94/12/16$
                     24:  */
                     25:
                     26: #ifndef _MACHINE_VMPARAM_H_
                     27: #define _MACHINE_VMPARAM_H_
                     28:
                     29: /*
                     30:  * Machine dependent constants for HP PA
                     31:  */
                     32: /*
                     33:  * USRTEXT is the start of the user text/data space, while USRSTACK
                     34:  * is the bottm (start) of the user stack.
                     35:  */
                     36: #define        USRTEXT         PAGE_SIZE               /* Start of user .text */
                     37: #define        USRSTACK        0x78000000UL            /* Start of user stack */
                     38: #define        SYSCALLGATE     0xC0000000              /* syscall gateway page */
                     39:
                     40: /*
                     41:  * Virtual memory related constants, all in bytes
                     42:  */
                     43: #ifndef MAXTSIZ
                     44: #define        MAXTSIZ         (512*1024*1024UL)       /* max text size */
                     45: #endif
                     46: #ifndef DFLDSIZ
                     47: #define        DFLDSIZ         (16*1024*1024)          /* initial data size limit */
                     48: #endif
                     49: #ifndef MAXDSIZ
                     50: #define        MAXDSIZ         (1*1024*1024*1024UL)    /* max data size */
                     51: #endif
                     52: #ifndef        DFLSSIZ
                     53: #define        DFLSSIZ         (2*1024*1024)           /* initial stack size limit */
                     54: #endif
                     55: #ifndef        MAXSSIZ
                     56: #define        MAXSSIZ         (128*1024*1024UL)       /* max stack size */
                     57: #endif
                     58:
                     59: #define STACKGAP_RANDOM        256*1024
                     60:
                     61: #ifndef USRIOSIZE
                     62: #define        USRIOSIZE       ((2*HPPA_PGALIAS)/PAGE_SIZE)    /* 2mb */
                     63: #endif
                     64:
                     65: /*
                     66:  * PTEs for system V style shared memory.
                     67:  * This is basically slop for kmempt which we actually allocate (malloc) from.
                     68:  */
                     69: #ifndef SHMMAXPGS
                     70: #define SHMMAXPGS      8192    /* 32mb */
                     71: #endif
                     72:
                     73: /* user/kernel map constants */
                     74: #define        VM_MIN_ADDRESS          ((vaddr_t)0)
                     75: #define        VM_MAXUSER_ADDRESS      ((vaddr_t)0xc0000000)
                     76: #define        VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
                     77: #define        VM_MIN_KERNEL_ADDRESS   ((vaddr_t)0xc0001000)
                     78: #define        VM_MAX_KERNEL_ADDRESS   ((vaddr_t)0xef000000)
                     79:
                     80: /* virtual sizes (bytes) for various kernel submaps */
                     81: #define VM_PHYS_SIZE           (USRIOSIZE*PAGE_SIZE)
                     82:
                     83: #define        VM_PHYSSEG_MAX          1       /* this many physmem segments */
                     84: #define        VM_PHYSSEG_STRAT        VM_PSTRAT_RANDOM
                     85:
                     86: #define        VM_PHYSSEG_NOADD        /* XXX until uvm code is fixed */
                     87:
                     88: #define        VM_NFREELIST            2
                     89: #define        VM_FREELIST_DEFAULT     0
                     90: #define        VM_FREELIST_ARCH        1
                     91:
                     92: #if defined(_KERNEL) && !defined(_LOCORE)
                     93: #define __HAVE_VM_PAGE_MD
                     94: struct pv_entry;
                     95: struct vm_page_md {
                     96:        struct simplelock pvh_lock;     /* locks every pv on this list */
                     97:        struct pv_entry *pvh_list;      /* head of list (locked by pvh_lock) */
                     98:        u_int           pvh_attrs;      /* to preserve ref/mod */
                     99: };
                    100:
                    101: #define        VM_MDPAGE_INIT(pg) do {                         \
                    102:        simple_lock_init(&(pg)->mdpage.pvh_lock);       \
                    103:        (pg)->mdpage.pvh_list = NULL;                   \
                    104:        (pg)->mdpage.pvh_attrs = 0;                     \
                    105: } while (0)
                    106: #endif
                    107:
                    108: #endif /* _MACHINE_VMPARAM_H_ */
                    109: