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are machine dependent because they are not required to update the tlb when mappings are added or removed, and doing so is machine dependent. In addition, an implementation may require that pages mapped with pmap_kenter have a backing vm_page_t, which is not necessarily true of all physical pages, and so may choose to pass the vm_page_t to pmap_kenter instead of the physical address in order to make this requirement clear.
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*-
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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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 TooLs GmbH.
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* 4. The name of TooLs GmbH 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 TOOLS GMBH ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: pmap.h,v 1.17 2000/03/30 16:18:24 jdolecek Exp $
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PMAP_H_
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#define _MACHINE_PMAP_H_
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#include <machine/sr.h>
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struct pmap {
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u_int pm_sr[16];
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u_int pm_active;
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u_int pm_context;
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struct pmap_statistics pm_stats;
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};
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typedef struct pmap *pmap_t;
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struct pvo_entry {
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LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */
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LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */
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struct pte pvo_pte; /* PTE */
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pmap_t pvo_pmap; /* Owning pmap */
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vm_offset_t pvo_vaddr; /* VA of entry */
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};
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LIST_HEAD(pvo_head, pvo_entry);
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struct md_page {
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u_int mdpg_attrs;
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struct pvo_head mdpg_pvoh;
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};
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extern struct pmap kernel_pmap_store;
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#define kernel_pmap (&kernel_pmap_store)
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#define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh))
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#define pmap_resident_count(pm) (pm->pm_stats.resident_count)
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#ifdef _KERNEL
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void pmap_bootstrap(vm_offset_t, vm_offset_t);
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void pmap_kenter(vm_offset_t va, vm_offset_t pa);
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void pmap_kremove(vm_offset_t);
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void *pmap_mapdev(vm_offset_t, vm_size_t);
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void pmap_unmapdev(vm_offset_t, vm_size_t);
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void pmap_deactivate(struct thread *);
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vm_offset_t pmap_kextract(vm_offset_t);
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int pmap_pte_spill(vm_offset_t);
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#define vtophys(va) pmap_kextract(((vm_offset_t)(va)))
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extern vm_offset_t avail_start;
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extern vm_offset_t avail_end;
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extern vm_offset_t phys_avail[];
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extern vm_offset_t virtual_avail;
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extern vm_offset_t virtual_end;
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extern vm_offset_t msgbuf_phys;
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#endif
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#endif /* !_MACHINE_PMAP_H_ */
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