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