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/* $OpenBSD: pmap.h,v 1.21 2001/12/12 19:33:38 miod 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_
#define OMRON_PMAP
#include <machine/mmu.h> /* batc_template_t, BATC_MAX, etc.*/
#include <machine/pcb.h> /* pcb_t, etc.*/
#include <machine/psl.h> /* get standard goodies */
typedef struct sdt_entry *sdt_ptr_t;
/*
* PMAP structure
*/
typedef struct pmap *pmap_t;
struct pmap {
sdt_ptr_t sdt_paddr; /* physical pointer to sdt */
sdt_ptr_t sdt_vaddr; /* virtual pointer to sdt */
int ref_count; /* reference count */
struct simplelock lock;
struct pmap_statistics stats; /* pmap statistics */
/* cpus using of this pmap; NCPU must be <= 32 */
unsigned long cpus_using;
#ifdef DEBUG
pmap_t next;
pmap_t prev;
#endif
/* for OMRON_PMAP */
batc_template_t i_batc[BATC_MAX]; /* instruction BATCs */
batc_template_t d_batc[BATC_MAX]; /* data BATCs */
/* end OMRON_PMAP */
};
#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.
*/
typedef struct pv_entry {
struct pv_entry *next; /* next pv_entry */
pmap_t pmap; /* pmap where mapping lies */
vm_offset_t va; /* virtual address for mapping */
} *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)->stats.resident_count)
#define pmap_phys_address(frame) ((vm_offset_t) (ptoa(frame)))
#define pmap_update(pmap) /* nothing (yet) */
#define PMAP_ACTIVATE(proc) pmap_activate(proc)
#define PMAP_DEACTIVATE(proc) pmap_deactivate(proc)
#define PMAP_CONTEXT(pmap, thread)
/*
* Modes used when calling pmap_cache_flush().
*/
#define FLUSH_CACHE 0
#define FLUSH_CODE_CACHE 1
#define FLUSH_DATA_CACHE 2
#define FLUSH_LOCAL_CACHE 3
#define FLUSH_LOCAL_CODE_CACHE 4
#define FLUSH_LOCAL_DATA_CACHE 5
void pmap_bootstrap __P((vm_offset_t, vm_offset_t *, vm_offset_t *,
vm_offset_t *, vm_offset_t *));
void pmap_cache_ctrl __P((pmap_t, vm_offset_t, vm_offset_t, unsigned));
#endif /* _KERNEL */
#endif /* _MACHINE_PMAP_H_ */
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