696effb697
- Move vtophys() macros next to vtopte() where vtopte() exists to match comments above vtopte(). - Remove references to the alternate address space in the comment above vtopte(). amd64 never had the alternate address space, and i386 lost it prior to PAE support being added. - s/entires/entries/ in comments. Reviewed by: alc
115 lines
3.8 KiB
C
115 lines
3.8 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 <sys/queue.h>
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <machine/sr.h>
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#include <machine/pte.h>
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#if !defined(NPMAPS)
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#define NPMAPS 32768
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#endif /* !defined(NPMAPS) */
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struct pmap {
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struct mtx pm_mtx;
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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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#ifdef _KERNEL
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#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx)
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#define PMAP_LOCK_ASSERT(pmap, type) \
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mtx_assert(&(pmap)->pm_mtx, (type))
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#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx)
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#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \
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NULL, MTX_DEF)
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#define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx)
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#define PMAP_MTX(pmap) (&(pmap)->pm_mtx)
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#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx)
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#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx)
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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_dev_direct_mapped(vm_offset_t, vm_size_t);
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boolean_t pmap_mmu_install(char *name, int prio);
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#define vtophys(va) pmap_kextract((vm_offset_t)(va))
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#define PHYS_AVAIL_SZ 128
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extern vm_offset_t phys_avail[PHYS_AVAIL_SZ];
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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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extern int pmap_bootstrapped;
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#endif
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#endif /* !_MACHINE_PMAP_H_ */
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