170 lines
4.4 KiB
C
170 lines
4.4 KiB
C
/* $NetBSD: uvm_init.c,v 1.5 1998/02/10 14:12:13 mrg Exp $ */
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/*
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* XXXCDC: "ROUGH DRAFT" QUALITY UVM PRE-RELEASE FILE!
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* >>>USE AT YOUR OWN RISK, WORK IS NOT FINISHED<<<
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*/
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/*
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*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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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 Charles D. Cranor and
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* Washington University.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: Id: uvm_init.c,v 1.1.2.3 1998/02/06 05:15:27 chs Exp
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*/
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/*
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* uvm_init.c: init the vm system.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <sys/resourcevar.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/vnode.h>
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#include <sys/conf.h>
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#include <vm/vm.h>
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#include <vm/vm_page.h>
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#include <vm/vm_kern.h>
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#include <sys/syscallargs.h>
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#include <uvm/uvm.h>
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/*
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* struct uvm: we store all global vars in this structure to make them
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* easier to spot...
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*/
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struct uvm uvm; /* decl */
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struct uvmexp uvmexp; /* decl */
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/*
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* local prototypes
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*/
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/*
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* uvm_init: init the VM system. called from kern/init_main.c.
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*/
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void uvm_init()
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{
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vm_offset_t kvm_start, kvm_end;
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/*
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* step 0: ensure that the hardware set the page size
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*/
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if (uvmexp.pagesize == 0) {
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panic("uvm_init: page size not set");
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}
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/*
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* step 1: zero the uvm structure
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*/
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bzero(&uvm, sizeof(uvm));
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averunnable.fscale = FSCALE;
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/*
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* step 2: init the page sub-system. this includes allocating the
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* vm_page structures, and setting up all the page queues (and
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* locks). available memory will be put in the "free" queue.
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* kvm_start and kvm_end will be set to the area of kernel virtual
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* memory which is available for general use.
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*/
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uvm_page_init(&kvm_start, &kvm_end);
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/*
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* step 3: init the map sub-system. allocates the static pool of
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* vm_map_entry structures that are used for "special" kernel maps
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* (e.g. kernel_map, kmem_map, etc...).
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*/
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uvm_map_init();
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/*
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* step 4: setup the kernel's virtual memory data structures. this
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* includes setting up the kernel_map/kernel_object and the kmem_map/
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* kmem_object.
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*/
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uvm_km_init(kvm_start, kvm_end);
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/*
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* step 5: init the pmap module. the pmap module is free to allocate
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* memory for its private use (e.g. pvlists).
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*/
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pmap_init();
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/*
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* step 6: init the kernel memory allocator. after this call the
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* kernel memory allocator (malloc) can be used.
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*/
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kmeminit();
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/*
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* step 7: init all pagers and the pager_map.
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*/
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uvm_pager_init();
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/*
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* step 8: allocate anons (can add more as we add swap... later)
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*/
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uvm_anon_init();
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/*
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* the VM system is now up! now that malloc is up we can resize the
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* <obj,off> => <page> hash table for general use and enable paging
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* of kernel objects.
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*/
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uvm_page_rehash();
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uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS, UAO_FLAG_KERNSWAP);
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/*
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* done!
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*/
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return;
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}
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