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/*-
* Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center and by Chris G. Demetriou.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*-
* Copyright (c) 1991 Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department and William Jolitz of UUNET Technologies Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Derived from hp300 version by Mike Hibler, this version by William
* Jolitz uses a recursive map [a pde points to the page directory] to
* map the page tables using the pagetables themselves. This is done to
* reduce the impact on kernel virtual memory for lots of sparse address
* space, and to reduce the cost of memory to each process.
*
* from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
* from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
* from: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp
* $FreeBSD: src/sys/ia64/include/pmap.h,v 1.25 2005/09/03 23:53:50 marcel Exp $
*/
#ifndef _PMAP_MACHINE_
#define _PMAP_MACHINE_
#include <sys/lock.h>
paddr_t vtophys(vaddr_t);
struct pv_entry; /* Forward declaration. */
struct pmap {
TAILQ_ENTRY(pmap) pm_list; /* list of all pmaps */
TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
int pm_count; /* pmap reference count */
struct simplelock pm_slock; /* lock on pmap */
u_int32_t pm_rid[5]; /* base RID for pmap */
int pm_active; /* active flag */
struct pmap_statistics pm_stats; /* pmap statistics */
unsigned long pm_cpus; /* mask of CPUs using pmap */
};
typedef struct pmap *pmap_t;
/*
* For each vm_page_t, there is a list of all currently valid virtual
* mappings of that page. An entry is a pv_entry_t, the list is pv_pvlist.
*/
typedef struct pv_entry {
pmap_t pv_pmap; /* pmap where mapping lies */
vaddr_t pv_va; /* virtual address for mapping */
TAILQ_ENTRY(pv_entry) pv_list;
TAILQ_ENTRY(pv_entry) pv_plist;
} *pv_entry_t;
/* pvh_attrs */
#define PGA_MODIFIED 0x01 /* modified */
#define PGA_REFERENCED 0x02 /* referenced */
extern struct pmap kernel_pmap_store;
#define pmap_kernel() (&kernel_pmap_store)
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
#define pmap_copy(dp, sp, da, l, sa) /* nothing */
#define pmap_update(pmap) /* nothing (yet) */
void pmap_bootstrap(void);
#define pmap_is_referenced(pg) \
(((pg)->mdpage.pvh_attrs & PGA_REFERENCED) != 0)
#define pmap_is_modified(pg) \
(((pg)->mdpage.pvh_attrs & PGA_MODIFIED) != 0)
#define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*/
#define PMAP_MAP_POOLPAGE(pa) IA64_PHYS_TO_RR7((pa))
#define PMAP_UNMAP_POOLPAGE(va) IA64_RR_MASK((va))
/*
* Macros for locking pmap structures.
*
* Note that we if we access the kernel pmap in interrupt context, it
* is only to update statistics. Since stats are updated using atomic
* operations, locking the kernel pmap is not necessary. Therefore,
* it is not necessary to block interrupts when locking pmap strucutres.
*/
#define PMAP_LOCK(pmap) simple_lock(&(pmap)->pm_slock)
#define PMAP_UNLOCK(pmap) simple_unlock(&(pmap)->pm_slock)
#define PMAP_VHPT_LOG2SIZE 16
#endif /* _PMAP_MACHINE_ */
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