241 lines
6.5 KiB
C
241 lines
6.5 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 _POWERPC_OEA_VMPARAM_H_
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#define _POWERPC_OEA_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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/*
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* OEA processors have 4K pages. 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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#ifndef USRSTACK
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#define USRSTACK VM_MAXUSER_ADDRESS
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#endif
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#ifndef USRSTACK32
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#define USRSTACK32 ((uint32_t)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 ( 0x10000000L)
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#define SEGMENT_MASK (~0x0fffffffL)
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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 bits to make the lower bits entirely random
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* so to give better PTE distribution.
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*/
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#define VSID__KEYSHFT (SR_VSID_WIDTH - SR_KEY_LEN)
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#define VSID_SR_INCREMENT ((1L << VSID__KEYSHFT) - 1)
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#define VSID__HASHMASK (VSID_SR_INCREMENT - 1)
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#define VSID_MAKE(sr, hash) \
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(( \
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(((sr) << VSID__KEYSHFT) | ((hash) & VSID__HASMASK))
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<< SR_VSID_SHFT) & SR_VSID)
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#define VSID_TO_SR(vsid) \
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(((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__KEYSHFT))
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#define VSID_TO_HASH(vsid) \
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(((vsid) & SR_VSID) >> SR_VSID_SHFT) & VSID__HASHMASK)
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#else
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#define VSID__HASHSHFT (SR_KEY_LEN)
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#define VSID_SR_INCREMENT (1L << 0)
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#define VSID__KEYMASK ((1L << VSID__HASHSHFT) - 1)
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#define VSID_MAKE(sr, hash) \
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(( \
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(((hash) << VSID__HASHSHFT) | ((sr) & VSID__KEYMASK)) \
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<< SR_VSID_SHFT) & SR_VSID)
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#define VSID_TO_SR(vsid) \
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(((vsid) >> SR_VSID_SHFT) & VSID__KEYMASK)
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#define VSID_TO_HASH(vsid) \
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(((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__HASHSHFT))
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#endif
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/*
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* Fixed segments
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*/
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#ifndef USER_SR
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#define USER_SR 12
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#endif
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#ifndef KERNEL_SR
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#define KERNEL_SR 13
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#endif
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#ifndef KERNEL2_SR
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#define KERNEL2_SR 14
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#endif
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#define KERNEL2_SEGMENT VSID_MAKE(KERNEL2_SR, KERNEL_VSIDBITS)
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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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#define VM_MIN_ADDRESS ((vaddr_t) 0)
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#define VM_MAXUSER_ADDRESS ((vaddr_t) ~0xfffL)
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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 + 2*SEGMENT_LENGTH)
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/*
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* The address to which unspecified mapping requests default
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* Put the stack in it's own segment and start mmaping at the
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* top of the next lower segment.
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*/
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#ifdef _KERNEL_OPT
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#include "opt_uvm.h"
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#endif
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#define __HAVE_TOPDOWN_VM
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#ifdef USE_TOPDOWN_VM
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#define VM_DEFAULT_ADDRESS(da, sz) \
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(((VM_MAXUSER_ADDRESS - MAXSSIZ) & SEGMENT_MASK) - round_page(sz))
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#endif
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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 * 3 / 4)
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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_FIRST16 2
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#define VM_FREELIST_MAX 3
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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 /* _POWERPC_OEA_VMPARAM_H_ */
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