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NetBSD/sys/arch/arm26/include/vmparam.h

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Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this data when pages are initialized by UVM. These macros are mandatory, but ports may #define them to nothing if they are not needed/used. This deprecates struct pmap_physseg. As a transitional measure, allow a port to #define PMAP_PHYSSEG so that it can continue to use it until its pmap is converted to use VM_MDPAGE_MEMBERS. Use all this stuff to eliminate a lot of extra work in the Alpha pmap module (it's smaller and faster now). Changes to other pmap modules will follow.
2001-04-30 02:44:31 +04:00
/* $NetBSD: vmparam.h,v 1.4 2001/04/29 22:44:33 thorpej Exp $ */
Initial commit of arm26 port
2000-05-10 01:55:44 +04:00
/*
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* 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 University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
*/
Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this data when pages are initialized by UVM. These macros are mandatory, but ports may #define them to nothing if they are not needed/used. This deprecates struct pmap_physseg. As a transitional measure, allow a port to #define PMAP_PHYSSEG so that it can continue to use it until its pmap is converted to use VM_MDPAGE_MEMBERS. Use all this stuff to eliminate a lot of extra work in the Alpha pmap module (it's smaller and faster now). Changes to other pmap modules will follow.
2001-04-30 02:44:31 +04:00
#ifndef _ARM26_VMPARAM_H_
#define _ARM26_VMPARAM_H_
Initial commit of arm26 port
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#define USRTEXT VM_MIN_ADDRESS
#define USRSTACK VM_MAXUSER_ADDRESS
#define MAXTSIZ (0x007f8000) /* max text size */
#ifndef DFLDSIZ
#define DFLDSIZ (0x00800000) /* initial data size limit */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (0x00800000) /* max data size */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (512*1024) /* initial stack size limit */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (0x00200000) /* max stack size */
#endif
/*
* Size of shared memory map
*/
#ifndef SHMMAXPGS
#define SHMMAXPGS 1024
#endif
/*
* The time for a process to be blocked before being very swappable.
* This is a number of seconds which the system takes as being a non-trivial
* amount of real time. You probably shouldn't change this;
* it is used in subtle ways (fractions and multiples of it are, that is, like
* half of a `long time'', almost a long time, etc.)
* It is related to human patience and other factors which don't really
* change over time.
*/
#define MAXSLP 20
Drastically reduce PAGER_MAP_SIZE so we don't run out of KVM so soon.
2000-11-30 15:16:00 +03:00
/*
* Override the default pager_map size, there's not enough KVA.
*/
#define PAGER_MAP_SIZE (1 * 1024 * 1024)
Initial commit of arm26 port
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/*
* Mach derived constants
*/
/* Need to link some of these with some in param.h */
/*
* These specify the range of virtual pages available to user
* processes and to the kernel. This is a bit of a delicate balancing
* act, as we've only got 32Mb between them. There should probably be
* an option to have separate kernel and user spaces to ease this.
*/
#define KVM_SIZE 0x00800000 /* 8Mb */
/* User VM range */
#define VM_MIN_ADDRESS ((vm_offset_t)0x00008000)
#define VM_MAX_ADDRESS ((vm_offset_t)0x02000000 - KVM_SIZE)
#define VM_MAXUSER_ADDRESS VM_MAX_ADDRESS
/* Kernel VM range */
#define VM_MIN_KERNEL_ADDRESS VM_MAX_ADDRESS
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0x02000000)
#define VM_MAXKERN_ADDRESS VM_MAX_KERNEL_ADDRESS
/* XXX max. amount of KVM to be used by buffers. */
#ifndef VM_MAX_KERNEL_BUF
#define VM_MAX_KERNEL_BUF \
((VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS) / 4)
#endif
/* Physical memory parameters */
Add a special call to uvm_page_physload to register RISC OS's zero page as free at startup.
2000-12-27 23:43:44 +03:00
#define VM_PHYSSEG_MAX 3
Initial commit of arm26 port
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#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
#define VM_PHYSSEG_NOADD /* We won't turn up extra memory during autoconfig */
#define VM_NFREELIST 2
#define VM_FREELIST_LOW 1 /* DMA-able memory (bottom 512k phys) */
#define VM_FREELIST_DEFAULT 0 /* The rest */
Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this data when pages are initialized by UVM. These macros are mandatory, but ports may #define them to nothing if they are not needed/used. This deprecates struct pmap_physseg. As a transitional measure, allow a port to #define PMAP_PHYSSEG so that it can continue to use it until its pmap is converted to use VM_MDPAGE_MEMBERS. Use all this stuff to eliminate a lot of extra work in the Alpha pmap module (it's smaller and faster now). Changes to other pmap modules will follow.
2001-04-30 02:44:31 +04:00
#define VM_MDPAGE_MEMBERS /* XXX nothing yet */
#define VM_MDPAGE_INIT(pg) /* XXX nothing yet */
Initial commit of arm26 port
2000-05-10 01:55:44 +04:00
Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for each vm_page structure. Add a VM_MDPAGE_INIT() macro to init this data when pages are initialized by UVM. These macros are mandatory, but ports may #define them to nothing if they are not needed/used. This deprecates struct pmap_physseg. As a transitional measure, allow a port to #define PMAP_PHYSSEG so that it can continue to use it until its pmap is converted to use VM_MDPAGE_MEMBERS. Use all this stuff to eliminate a lot of extra work in the Alpha pmap module (it's smaller and faster now). Changes to other pmap modules will follow.
2001-04-30 02:44:31 +04:00
#endif /* _ARM26_VMPARAM_H_ */
Initial commit of arm26 port
2000-05-10 01:55:44 +04:00
/* End of vmparam.h */
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