113 lines
4.5 KiB
C
113 lines
4.5 KiB
C
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/* $NetBSD: vmpagemd.h,v 1.1 2012/10/03 00:51:47 christos Exp $ */
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/*-
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* Copyright (c) 2011 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 Raytheon BBN Technologies Corp and Defense Advanced Research Projects
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* Agency and which was developed by Matt Thomas of 3am Software Foundry.
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*
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* This material is based upon work supported by the Defense Advanced Research
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* Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
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* Contract No. N66001-09-C-2073.
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* Approved for Public Release, Distribution Unlimited
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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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*
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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 _COMMON_PMAP_TLB_VMPAGEMD_H_
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#define _COMMON_PMAP_TLB_VMPAGEMD_H_
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#ifdef _LOCORE
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#error use assym.h instead
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#endif
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#ifdef _MODULE
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#error this file should not be included by loadable kernel modules
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#endif
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#include "opt_modular.h"
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#include "opt_multiprocessor.h"
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#include <sys/mutex.h>
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#define __HAVE_VM_PAGE_MD
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typedef struct pv_entry {
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struct pv_entry *pv_next;
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struct pmap *pv_pmap;
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vaddr_t pv_va;
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} *pv_entry_t;
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#define VM_PAGEMD_REFERENCED 0x0001 /* page has been recently referenced */
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#define VM_PAGEMD_MODIFIED 0x0002 /* page has been modified */
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#define VM_PAGEMD_POOLPAGE 0x0004 /* page is used as a poolpage */
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#define VM_PAGEMD_EXECPAGE 0x0008 /* page is exec mapped */
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#ifdef __PMAP_VIRTUAL_CACHE_ALIASES
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#define VM_PAGEMD_UNCACHED 0x0010 /* page is mapped uncached */
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#endif
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#ifdef __PMAP_VIRTUAL_CACHE_ALIASES
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#define VM_PAGEMD_CACHED_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_UNCACHED) == 0)
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#define VM_PAGEMD_UNCACHED_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_UNCACHED) != 0)
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#endif
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#define VM_PAGEMD_MODIFIED_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_MODIFIED) != 0)
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#define VM_PAGEMD_REFERENCED_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_REFERENCED) != 0)
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#define VM_PAGEMD_POOLPAGE_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_POOLPAGE) != 0)
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#define VM_PAGEMD_EXECPAGE_P(mdpg) (((mdpg)->mdpg_attrs & VM_PAGEMD_EXECPAGE) != 0)
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struct vm_page_md {
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volatile u_int mdpg_attrs; /* page attributes */
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struct pv_entry mdpg_first; /* pv_entry first */
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#if defined(MULTIPROCESSOR) || defined(MODULAR)
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kmutex_t *mdpg_lock; /* pv list lock */
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#define VM_PAGEMD_PVLIST_LOCK_INIT(mdpg) \
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(mdpg)->mdpg_lock = NULL
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#define VM_PAGEMD_PVLIST_LOCK(pg, list_change) \
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pmap_pvlist_lock(mdpg, list_change)
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#define VM_PAGEMD_PVLIST_UNLOCK(mdpg) \
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mutex_spin_exit((mdpg)->mdpg_lock)
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#define VM_PAGEMD_PVLIST_LOCKED_P(mdpg) \
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mutex_owner((mdpg)->mdpg_lock)
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#define VM_PAGEMD_PVLIST_GEN(mdpg) \
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((uint16_t)((mdpg)->mdpg_attrs >> 16))
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#else
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#define VM_PAGEMD_PVLIST_LOCK_INIT(mdpg) do { } while (/*CONSTCOND*/ 0)
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#define VM_PAGEMD_PVLIST_LOCK(mdpg, lc) (mutex_spin_enter(&pmap_pvlist_mutex), 0)
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#define VM_PAGEMD_PVLIST_UNLOCK(mdpg) mutex_spin_exit(&pmap_pvlist_mutex)
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#define VM_PAGEMD_PVLIST_LOCKED_P(mdpg) true
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#define VM_PAGEMD_PVLIST_GEN(mdpg) (0)
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#endif /* MULTIPROCESSOR || MODULAR */
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};
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#define VM_MDPAGE_INIT(pg) \
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do { \
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(pg)->mdpage.mdpg_first.pv_next = NULL; \
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(pg)->mdpage.mdpg_first.pv_pmap = NULL; \
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(pg)->mdpage.mdpg_first.pv_va = (pg)->phys_addr; \
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(pg)->mdpage.mdpg_attrs = 0; \
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VM_PAGEMD_PVLIST_LOCK_INIT(&(pg)->mdpage); \
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} while (/* CONSTCOND */ 0)
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#endif /* __COMMON_PMAP_TLB_VMPAGEMD_H_ */
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