NetBSD/sys/arch/sun3/include/pmap3x.h

89 lines
3.5 KiB
C

/* $NetBSD: pmap3x.h,v 1.9 1998/03/16 16:25:38 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.
*/
/*
* Physical map structures exported to the VM code.
* XXX - Does user-level code really see this struct?
*/
struct pmap {
struct a_tmgr_struct *pm_a_tmgr; /* Level-A table manager */
u_long pm_a_phys; /* MMU level-A phys addr */
simple_lock_data_t pm_lock; /* lock on pmap */
int pm_refcount; /* reference count */
int pm_version;
};
#ifdef _KERNEL
extern struct pmap kernel_pmap;
#define pmap_kernel() (&kernel_pmap)
/*
* The sun3 wants faults to go through the pmap code, but
* the sun3x just goes directly to the common VM code.
*/
#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)
/* Map a given physical region to a virtual region */
vm_offset_t pmap_map __P((vm_offset_t, vm_offset_t, vm_offset_t, int));
/*
* 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 */