82 lines
3.3 KiB
C
82 lines
3.3 KiB
C
/* $NetBSD: pmap3x.h,v 1.10 1998/06/09 19:58:50 gwr Exp $ */
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/*-
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* Copyright (c) 1997 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 Jeremy Cooper.
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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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/*
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* Physical map structures exported to the VM code.
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* XXX - Does user-level code really see this struct?
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*/
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struct pmap {
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struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */
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u_long pm_a_phys; /* MMU level-A phys addr */
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simple_lock_data_t pm_lock; /* lock on pmap */
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int pm_refcount; /* reference count */
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int pm_version;
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};
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#ifdef _KERNEL
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extern struct pmap kernel_pmap;
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#define pmap_kernel() (&kernel_pmap)
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/* Common function for pmap_resident_count(), pmap_wired_count() */
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segsz_t pmap_count __P((pmap_t, int));
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/* This needs to be a macro for kern_sysctl.c */
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#define pmap_resident_count(pmap) (pmap_count((pmap), 0))
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/* This needs to be a macro for vm_mmap.c */
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#define pmap_wired_count(pmap) (pmap_count((pmap), 1))
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/* We use the PA plus some low bits for device mmap. */
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#define pmap_phys_address(addr) (addr)
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/* Map a given physical region to a virtual region */
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vm_offset_t pmap_map __P((vm_offset_t, vm_offset_t, vm_offset_t, int));
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/*
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* Flags to tell pmap_enter `this is not to be cached', etc.
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* Since physical addresses are always aligned, we can use
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* the low order bits for this.
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*/
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#define PMAP_VME16 0x10 /* pmap will add the necessary offset */
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#define PMAP_VME32 0x20 /* etc. */
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#define PMAP_NC 0x40 /* tells pmap_enter to set PTE_CI */
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#define PMAP_SPEC 0xFF /* mask to get all above. */
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#endif /* _KERNEL */
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