94 lines
3.6 KiB
C
94 lines
3.6 KiB
C
/* $NetBSD: pmap3.h,v 1.16 1996/12/17 21:11:10 gwr Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1996 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Adam Glass and Gordon W. Ross.
|
|
*
|
|
* 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 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.
|
|
*/
|
|
|
|
#ifndef _MACHINE_PMAP_
|
|
#define _MACHINE_PMAP_
|
|
|
|
/*
|
|
* Physical map structures exported to the VM code.
|
|
*/
|
|
|
|
struct pmap {
|
|
int pm_refcount; /* pmap reference count */
|
|
simple_lock_data_t pm_lock; /* lock on pmap */
|
|
struct pmap_statistics pm_stats; /* pmap statistics */
|
|
int pm_version;
|
|
int pm_ctxnum;
|
|
unsigned char *pm_segmap;
|
|
};
|
|
|
|
typedef struct pmap *pmap_t;
|
|
|
|
#ifdef _KERNEL
|
|
struct pmap kernel_pmap_store;
|
|
struct pcb;
|
|
void pmap_activate __P((pmap_t pmap, struct pcb *pcbp));
|
|
void pmap_deactivate __P((pmap_t pmap, struct pcb *pcbp));
|
|
|
|
#define pmap_kernel() (&kernel_pmap_store)
|
|
|
|
#define PMAP_ACTIVATE(pmap, pcbp, iscurproc) \
|
|
pmap_activate(pmap, pcbp)
|
|
#define PMAP_DEACTIVATE(pmap, pcbp) \
|
|
pmap_deactivate(pmap, pcbp)
|
|
|
|
extern void pmap_prefer(vm_offset_t, vm_offset_t *);
|
|
#define PMAP_PREFER(fo, ap) pmap_prefer((fo), (ap))
|
|
|
|
/* XXX - Need a (silly) #define get code in kern_sysctl.c */
|
|
extern segsz_t pmap_resident_pages(pmap_t);
|
|
#define pmap_resident_count(pmap) pmap_resident_pages(pmap)
|
|
|
|
/*
|
|
* Since PTEs also contain type bits, we have to have some way
|
|
* to tell pmap_enter `this is an IO page' or `this is not to
|
|
* be cached'. Since physical addresses are always aligned, we
|
|
* can do this with the low order bits.
|
|
*
|
|
* The values below must agree with pte.h such that:
|
|
* (PMAP_OBIO << PG_MOD_SHIFT) == PGT_OBIO
|
|
*/
|
|
#define PMAP_OBIO 0x04 /* tells pmap_enter to use PG_OBIO */
|
|
#define PMAP_VME16 0x08 /* etc */
|
|
#define PMAP_VME32 0x0C /* etc */
|
|
#define PMAP_NC 0x10 /* tells pmap_enter to set PG_NC */
|
|
#define PMAP_SPEC 0x1C /* mask to get all above. */
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* _MACHINE_PMAP_ */
|