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freebsd-dev/sys/alpha/include/vmparam.h

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$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
/* $FreeBSD$ */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/* From: NetBSD: vmparam.h,v 1.6 1997/09/23 23:23:23 mjacob Exp */
#ifndef _ALPHA_VMPARAM_H
#define _ALPHA_VMPARAM_H
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department and Ralph Campbell.
*
* 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.
*
* from: Utah $Hdr: vmparam.h 1.16 91/01/18$
*
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
*/
/*
* Machine dependent constants for Alpha.
*/
/*
* USRTEXT is the start of the user text/data space, while USRSTACK
* is the top (end) of the user stack. Immediately above the user stack
* resides the user structure, which is UPAGES long and contains the
* kernel stack.
*/
#define USRTEXT CLBYTES
Various changes to support OSF1 emulation: * Move the user stack from VM_MAXUSER_ADDRESS to a place below the 32bit boundary (needed to support 32bit OSF programs). This should also save one pagetable per process. * Add cvtqlsv to the set of instructions handled by the floating point software completion code. * Disable all floating point exceptions by default. * A minor change to execve to allow the OSF1 image activator to support dynamic loading.
1998-12-30 10:38:59 +00:00
/* #define USRSTACK VM_MAXUSER_ADDRESS */
/*
* This stack location is suitable for OSF1 emulation. Some OSF
* programs are built as 32bit and assume that the stack is reachable
* with a 32bit value. OSF1 manages to have a variable location for
* the user stack which we should probably also support.
*/
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
#define USRSTACK (0x12000000LL)
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/*
* Virtual memory related constants, all in bytes
*/
#ifndef MAXTSIZ
#define MAXTSIZ (1<<30) /* max text size (1G) */
#endif
#ifndef DFLDSIZ
#define DFLDSIZ (1<<27) /* initial data size (128M) */
#endif
#ifndef MAXDSIZ
#define MAXDSIZ (1<<30) /* max data size (1G) */
#endif
#ifndef DFLSSIZ
#define DFLSSIZ (1<<21) /* initial stack size (2M) */
#endif
#ifndef MAXSSIZ
#define MAXSSIZ (1<<25) /* max stack size (32M) */
#endif
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#ifndef SGROWSIZ
#define SGROWSIZ (128UL*1024) /* amount to grow stack */
#endif
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/*
* PTEs for mapping user space into the kernel for phyio operations.
* 64 pte's are enough to cover 8 disks * MAXBSIZE.
*/
#ifndef USRIOSIZE
#define USRIOSIZE 64
#endif
/*
* Boundary at which to place first MAPMEM segment if not explicitly
* specified. Should be a power of two. This allows some slop for
* the data segment to grow underneath the first mapped segment.
*/
#define MMSEG 0x200000
/*
* The size of the clock loop.
*/
#define LOOPPAGES (maxfree - firstfree)
/*
* 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
/*
* A swapped in process is given a small amount of core without being bothered
* by the page replacement algorithm. Basically this says that if you are
* swapped in you deserve some resources. We protect the last SAFERSS
* pages against paging and will just swap you out rather than paging you.
* Note that each process has at least UPAGES+CLSIZE pages which are not
* paged anyways, in addition to SAFERSS.
*/
#define SAFERSS 10 /* nominal ``small'' resident set size
protected against replacement */
- Enable the use of UMA_MD_PAGE_ALLOC on alpha. - Define uma_small_alloc and uma_small_free using K0SEG for virtual addresses. Approved by: re
2002-11-01 03:34:51 +00:00
/*
* Alpha provides a machine specific single page allocator through the use
* of K0SEG.
*/
#define UMA_MD_SMALL_ALLOC
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/*
* Mach derived constants
*/
/* user/kernel map constants */
Major changes to the generic device framework for FreeBSD/alpha: * Eliminate bus_t and make it possible for all devices to have attached children. * Support dynamically extendable interfaces for drivers to replace both the function pointers in driver_t and bus_ops_t (which has been removed entirely. Two system defined interfaces have been defined, 'device' which is mandatory for all devices and 'bus' which is recommended for all devices which support attached children. * In addition, the alpha port defines two simple interfaces 'clock' for attaching various real time clocks to the system and 'mcclock' for the many different variations of mc146818 clocks which can be attached to different alpha platforms. This eliminates two more function pointer tables in favour of the generic method dispatch system provided by the device framework. Future device interfaces may include: * cdev and bdev interfaces for devfs to use in replacement for specfs and the fixed interfaces bdevsw and cdevsw. * scsi interface to replace struct scsi_adapter (not sure how this works in CAM but I imagine there is something similar there). * various tailored interfaces for different bus types such as pci, isa, pccard etc.
1998-06-14 13:46:10 +00:00
#define VM_MIN_ADDRESS (ALPHA_USEG_BASE) /* 0 */
#define VM_MAXUSER_ADDRESS ((ALPHA_USEG_END + 1LL))
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
Major changes to the generic device framework for FreeBSD/alpha: * Eliminate bus_t and make it possible for all devices to have attached children. * Support dynamically extendable interfaces for drivers to replace both the function pointers in driver_t and bus_ops_t (which has been removed entirely. Two system defined interfaces have been defined, 'device' which is mandatory for all devices and 'bus' which is recommended for all devices which support attached children. * In addition, the alpha port defines two simple interfaces 'clock' for attaching various real time clocks to the system and 'mcclock' for the many different variations of mc146818 clocks which can be attached to different alpha platforms. This eliminates two more function pointer tables in favour of the generic method dispatch system provided by the device framework. Future device interfaces may include: * cdev and bdev interfaces for devfs to use in replacement for specfs and the fixed interfaces bdevsw and cdevsw. * scsi interface to replace struct scsi_adapter (not sure how this works in CAM but I imagine there is something similar there). * various tailored interfaces for different bus types such as pci, isa, pccard etc.
1998-06-14 13:46:10 +00:00
#define VM_MIN_KERNEL_ADDRESS (ALPHA_K1SEG_BASE)
#define VM_MAX_KERNEL_ADDRESS (ALPHA_K1SEG_END)
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
/* virtual sizes (bytes) for various kernel submaps */
Add initial support for the FreeBSD/alpha kernel. This is very much a work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
1998-06-10 10:57:29 +00:00
#ifndef VM_KMEM_SIZE
#define VM_KMEM_SIZE (12 * 1024 * 1024)
#endif
/*
* How many physical pages per KVA page allocated.
* min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX)
* is the total KVA space allocated for kmem_map.
*/
#ifndef VM_KMEM_SIZE_SCALE
#define VM_KMEM_SIZE_SCALE (4) /* XXX 8192 byte pages */
#endif
/* initial pagein size of beginning of executable file */
#ifndef VM_INITIAL_PAGEIN
#define VM_INITIAL_PAGEIN 16
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
#endif
/* some Alpha-specific constants */
Major changes to the generic device framework for FreeBSD/alpha: * Eliminate bus_t and make it possible for all devices to have attached children. * Support dynamically extendable interfaces for drivers to replace both the function pointers in driver_t and bus_ops_t (which has been removed entirely. Two system defined interfaces have been defined, 'device' which is mandatory for all devices and 'bus' which is recommended for all devices which support attached children. * In addition, the alpha port defines two simple interfaces 'clock' for attaching various real time clocks to the system and 'mcclock' for the many different variations of mc146818 clocks which can be attached to different alpha platforms. This eliminates two more function pointer tables in favour of the generic method dispatch system provided by the device framework. Future device interfaces may include: * cdev and bdev interfaces for devfs to use in replacement for specfs and the fixed interfaces bdevsw and cdevsw. * scsi interface to replace struct scsi_adapter (not sure how this works in CAM but I imagine there is something similar there). * various tailored interfaces for different bus types such as pci, isa, pccard etc.
1998-06-14 13:46:10 +00:00
#define VPTBASE (0xfffffffe00000000LL) /* Virt. pg table */
Import NetBSD/Alpha headers needed to get the FreeBSD userland to compile (and even run). These files don't necessarily make sense for a FreeBSD/Alpha kernel build. That will come later and these files will be changed accordingly.
1998-03-09 05:43:16 +00:00
#endif /* !_ALPHA_VMPARAM_H */
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