8516d55745
This is a port of the OpenBSD pmap and trap handling code to get us
- Performance boost on some/all machines.
- Well on the way to PA2.0 (in 32bit mode) support. Several
machines probe hardware, but fail sometime after interrupts
are enabled.
Other things changed / fixed on the branch are
- update autoconf to use the OpenBSD code.
- com @ dino is very close to being supported.
- HPPA_REDZONE has been replaced with a working redzone which
is enabled with DIAGNOSTIC.
- UPAGES has been halved in size.
- power(4) from OpenBSD to fix a few bugs.
- updated list of modules from OpenBSD.
- initial ports of uturn(4), astro(4) and elroy(4).
- update some copyrights (remove advertising clause, etc.)
Thanks to mjf for some of the above, testing and listening.
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/* $NetBSD: vmparam.h,v 1.14 2009/04/30 07:01:27 skrll Exp $ */
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/* $OpenBSD: vmparam.h,v 1.33 2006/06/04 17:21:24 miod Exp $ */
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/*
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* Copyright (c) 1988-1994, The University of Utah and
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* the Computer Systems Laboratory at the University of Utah (CSL).
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* All rights reserved.
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*
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* Permission to use, copy, modify and distribute this software is hereby
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* granted provided that (1) source code retains these copyright, permission,
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* and disclaimer notices, and (2) redistributions including binaries
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* reproduce the notices in supporting documentation, and (3) all advertising
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* materials mentioning features or use of this software display the following
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* acknowledgement: ``This product includes software developed by the
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* Computer Systems Laboratory at the University of Utah.''
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*
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* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
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* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
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* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* CSL requests users of this software to return to csl-dist@cs.utah.edu any
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* improvements that they make and grant CSL redistribution rights.
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*
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* Utah $Hdr: vmparam.h 1.16 94/12/16$
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*/
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#ifndef _HPPA_VMPARAM_H_
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#define _HPPA_VMPARAM_H_
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/*
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* Machine dependent constants for HP PA
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*/
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/*
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* We use 4K pages on the HP PA. Override the PAGE_* definitions
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* to be compile-time constants.
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*/
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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/*
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* USRSTACK is the bottom (start) of the user stack.
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*/
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#define USRSTACK 0x70000000 /* Start of user stack */
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#define SYSCALLGATE 0xC0000000 /* syscall gateway page */
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/*
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* Virtual memory related constants, all in bytes
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*/
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#ifndef MAXTSIZ
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#define MAXTSIZ (0x40000000) /* max text size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (16*1024*1024) /* initial data size limit */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (USRSTACK-MAXTSIZ) /* max data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (2*1024*1024) /* initial stack size limit */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (256*1024*1024) /* max stack size */
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#endif
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#ifndef USRIOSIZE
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#define USRIOSIZE ((2*HPPA_PGALIAS)/PAGE_SIZE) /* 2mb */
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#endif
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/*
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* The time for a process to be blocked before being very swappable.
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* This is a number of seconds which the system takes as being a non-trivial
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* amount of real time. You probably shouldn't change this;
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* it is used in subtle ways (fractions and multiples of it are, that is, like
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* half of a ``long time'', almost a long time, etc.)
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* It is related to human patience and other factors which don't really
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* change over time.
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*/
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/* XXXNH - remove??? */
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#define MAXSLP 20
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/* user/kernel map constants */
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#define VM_MIN_ADDRESS ((vaddr_t)0)
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#define VM_MAXUSER_ADDRESS ((vaddr_t)0xc0000000)
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0001000)
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#define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xef000000)
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/* virtual sizes (bytes) for various kernel submaps */
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#define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
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#define VM_PHYSSEG_MAX 8 /* this many physmem segments */
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
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#define VM_PHYSSEG_NOADD /* XXX until uvm code is fixed */
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#define VM_NFREELIST 1
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#define VM_FREELIST_DEFAULT 0
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#if defined(_KERNEL) && !defined(_LOCORE)
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#define __HAVE_VM_PAGE_MD
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struct pv_entry;
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struct vm_page_md {
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kmutex_t pvh_lock; /* locks every pv on this list */
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struct pv_entry *pvh_list; /* head of list (locked by pvh_lock) */
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u_int pvh_attrs; /* to preserve ref/mod */
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int pvh_aliases; /* alias counting */
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};
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#define VM_MDPAGE_INIT(pg) \
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do { \
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mutex_init(&(pg)->mdpage.pvh_lock, MUTEX_NODEBUG, IPL_VM); \
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(pg)->mdpage.pvh_list = NULL; \
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(pg)->mdpage.pvh_attrs = 0; \
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(pg)->mdpage.pvh_aliases = 0; \
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} while (0)
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#endif
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#endif /* _HPPA_VMPARAM_H_ */
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