89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
/* $NetBSD: pmap.h,v 1.4 1997/02/14 03:55:33 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 {
|
|
struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */
|
|
u_long pm_a_phys; /* MMU level-A phys addr */
|
|
int pm_refcount; /* reference count */
|
|
simple_lock_data_t pm_lock; /* lock on pmap */
|
|
};
|
|
|
|
typedef struct pmap *pmap_t;
|
|
|
|
#ifdef _KERNEL
|
|
extern struct pmap kernel_pmap;
|
|
#define pmap_kernel() (&kernel_pmap)
|
|
|
|
/* This is called from locore.s:cpu_switch() */
|
|
void pmap_activate __P((pmap_t pmap));
|
|
|
|
#define _pmap_fault(map, va, ftype) \
|
|
vm_fault(map, va, ftype, 0)
|
|
|
|
/* Common function for pmap_resident_count(), pmap_wired_count() */
|
|
segsz_t pmap_count __P((pmap_t, int));
|
|
|
|
/* This needs to be a macro for kern_sysctl.c */
|
|
#define pmap_resident_count(pmap) (pmap_count((pmap), 0))
|
|
|
|
/* This needs to be a macro for vm_mmap.c */
|
|
#define pmap_wired_count(pmap) (pmap_count((pmap), 1))
|
|
|
|
/* We use the PA plus some low bits for device mmap. */
|
|
#define pmap_phys_address(addr) (addr)
|
|
|
|
/*
|
|
* 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 */
|