199 lines
5.4 KiB
C
199 lines
5.4 KiB
C
/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas <matt@3am-softwre.com> of Allegro Networks, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MPC6XX_VMPARAM_H_
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#define _MPC6XX_VMPARAM_H_
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#include <sys/queue.h>
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/*
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* Most of the definitions in this can be overriden by a machine-specific
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* vmparam.h if required. Otherwise a port can just include this file
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* get the right thing to happen.
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*/
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#ifndef USRTEXT
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#define USRTEXT PAGE_SIZE
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#endif
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#ifndef USRSTACK
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#define USRSTACK VM_MAXUSER_ADDRESS
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#endif
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#ifndef MAXTSIZ
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#define MAXTSIZ (64*1024*1024) /* maximum text size */
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#endif
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#ifndef MAXDSIZ
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#define MAXDSIZ (1024*1024*1024) /* maximum data size */
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#endif
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#ifndef MAXSSIZ
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#define MAXSSIZ (32*1024*1024) /* maximum stack size */
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#endif
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#ifndef DFLDSIZ
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#define DFLDSIZ (128*1024*1024) /* default data size */
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#endif
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#ifndef DFLSSIZ
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#define DFLSSIZ (2*1024*1024) /* default stack size */
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#endif
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/*
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* Default maximum amount of shared memory pages
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*/
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#ifndef SHMMAXPGS
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#define SHMMAXPGS 1024
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#endif
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/*
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* Default number of pages in the user raw I/O map.
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*/
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#ifndef USRIOSIZE
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#define USRIOSIZE 1024
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#endif
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/*
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* The number of seconds for a process to be blocked before being
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* considered very swappable.
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*/
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#ifndef MAXSLP
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#define MAXSLP 20
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#endif
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/*
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* Segment handling stuff
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*/
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#define SEGMENT_LENGTH 0x10000000
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#define SEGMENT_MASK 0xf0000000
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/*
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* Macros to manipulate VSIDs
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*/
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#if 0
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/*
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* Move the SR# to the top 4 bits to make the lower 19bits entirely random
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* so to give better PTE distribution.
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*/
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#define VSID_MAKE(sr, hash) (((sr) << (ADDR_SR_SHFT-4))|((hash) & 0xfffff))
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#define VSID_TO_SR(vsid) (((vsid) >> (ADDR_SR_SHFT-4)) & 0xF)
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#define VSID_TO_HASH(vsid) ((vsid) & 0xfffff)
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#else
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#define VSID_MAKE(sr, hash) ((sr) | (((hash) & 0xfffff) << 4))
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#define VSID_TO_SR(vsid) ((vsid) & 0xF)
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#define VSID_TO_HASH(vsid) (((vsid) >> 4) & 0xfffff)
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#endif
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/*
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* Fixed segments
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*/
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#define USER_SR 13
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#define KERNEL_SR 14
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#define KERNEL_VSIDBITS 0xfffff
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#define KERNEL_SEGMENT VSID_MAKE(KERNEL_SR, KERNEL_VSIDBITS)
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#define EMPTY_SEGMENT VSID_MAKE(0, KERNEL_VSIDBITS)
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#define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT))
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/*
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* Some system constants
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*/
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#ifndef NPMAPS
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#define NPMAPS 32768 /* Number of pmaps in system */
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#endif
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/*
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* Eventually VM_MAXUSER_ADDRESS should be defined as
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* (USER_SR << ADDR_SR_SHFT) - PAGE_SIZE
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* Well, USER_SR should die too. Say 0xbffff000.
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*/
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#define VM_MIN_ADDRESS ((vaddr_t) 0)
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#define VM_MAXUSER_ADDRESS ((vaddr_t) 0x7ffff000)
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#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
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#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) (KERNEL_SR << ADDR_SR_SHFT))
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#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH)
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#ifndef VM_PHYSSEG_MAX
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#define VM_PHYSSEG_MAX 16
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#endif
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
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#define VM_PHYSSEG_NOADD
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#ifndef VM_PHYS_SIZE
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#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE)
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#endif
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#ifndef VM_MAX_KERNEL_BUF
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#define VM_MAX_KERNEL_BUF (SEGMENT_LENGTH / 2)
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#endif
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#define VM_NFREELIST 16 /* 16 distinct memory segments */
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#define VM_FREELIST_DEFAULT 0
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#define VM_FREELIST_FIRST256 1
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#define VM_FREELIST_MAX 2
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#ifndef _LOCORE
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LIST_HEAD(pvo_head, pvo_entry);
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#if __NetBSD_Version__ > 105180000
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#define __HAVE_VM_PAGE_MD
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struct vm_page_md {
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struct pvo_head mdpg_pvoh;
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unsigned int mdpg_attrs;
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};
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#define VM_MDPAGE_INIT(pg) do { \
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LIST_INIT(&(pg)->mdpage.mdpg_pvoh); \
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(pg)->mdpage.mdpg_attrs = 0; \
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} while (/*CONSTCOND*/0)
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#else
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#define __HAVE_PMAP_PHYSSEG
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struct pmap_physseg {
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struct pvo_head *pvoh;
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char *attrs;
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};
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#endif
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#endif /* _LOCORE */
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#endif /* _MPC6XX_VMPARAM_H_ */
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