NetBSD/sys/arch/sun3x/include/pmap.h

85 lines
3.3 KiB
C

/* $NetBSD: pmap.h,v 1.1.1.1 1997/01/14 20:57:06 gwr Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jeremy Cooper.
*
* 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.
*/
#ifndef _SUN3X_PMAP_H
#define _SUN3X_PMAP_H
/*
* 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 */
struct a_tmgr_struct *pm_a_tbl; /* Root level MMU table to use */
};
typedef struct pmap *pmap_t;
#ifdef _KERNEL
extern struct pmap kernel_pmap;
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)
#define PMAP_ACTIVATE(pmap, pcbp, iscurproc) \
pmap_activate(pmap, pcbp)
#define PMAP_DEACTIVATE(pmap, pcbp) \
pmap_deactivate(pmap, pcbp)
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
#define pmap_phys_address(page) (page)
/*
* Flags to tell pmap_enter `this is not to be cached', etc.
* Since physical addresses are always aligned, we can use
* the low order bits for this.
*/
#define PMAP_VME16 0x10 /* pmap will add the necessary offset */
#define PMAP_VME32 0x20 /* etc. */
#define PMAP_NC 0x40 /* tells pmap_enter to set PTE_CI */
#define PMAP_SPEC 0xFF /* mask to get all above. */
#endif /* _KERNEL */
#endif /* _SUN3X_PMAP_H */