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/* $OpenBSD: pmap.h,v 1.1 2004/04/21 15:23:57 aoyama Exp $ */
/*
* Mach Operating System
* Copyright (c) 1991 Carnegie Mellon University
* Copyright (c) 1991 OMRON Corporation
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
*/
#ifndef _MACHINE_PMAP_H_
#define _MACHINE_PMAP_H_
#include <machine/mmu.h>
#include <machine/pcb.h>
/*
* PMAP structure
*/
/* #define PMAP_USE_BATC */
struct pmap {
sdt_entry_t *pm_stab; /* virtual pointer to sdt */
u_int32_t pm_apr;
int pm_count; /* reference count */
/* cpus using of this pmap; NCPU must be <= 32 */
u_int32_t pm_cpus;
struct simplelock pm_lock;
struct pmap_statistics pm_stats; /* pmap statistics */
#ifdef PMAP_USE_BATC
u_int32_t pm_ibatc[BATC_MAX]; /* instruction BATCs */
u_int32_t pm_dbatc[BATC_MAX]; /* data BATCs */
#endif
};
#define PMAP_NULL ((pmap_t) 0)
/* The PV (Physical to virtual) List.
*
* For each vm_page_t, pmap keeps a list of all currently valid virtual
* mappings of that page. An entry is a pv_entry_t; the list is the
* pv_head_table. This is used by things like pmap_remove, when we must
* find and remove all mappings for a particular physical page.
*/
/* XXX - struct pv_entry moved to vmparam.h because of include ordering issues */
typedef struct pmap *pmap_t;
typedef struct pv_entry *pv_entry_t;
#ifdef _KERNEL
extern pmap_t kernel_pmap;
extern struct pmap kernel_pmap_store;
extern caddr_t vmmap;
#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_phys_address(frame) ((paddr_t)(ptoa(frame)))
#define pmap_copy(dp,sp,d,l,s) do { /* nothing */ } while (0)
#define pmap_update(pmap) do { /* nothing (yet) */ } while (0)
#define pmap_clear_modify(pg) pmap_unsetbit(pg, PG_M)
#define pmap_clear_reference(pg) pmap_unsetbit(pg, PG_U)
void pmap_bootstrap(vaddr_t, paddr_t *, paddr_t *, vaddr_t *, vaddr_t *);
void pmap_cache_ctrl(pmap_t, vaddr_t, vaddr_t, u_int);
boolean_t pmap_unsetbit(struct vm_page *, int);
#endif /* _KERNEL */
#endif /* _MACHINE_PMAP_H_ */
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