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/* $OpenBSD: pte.h,v 1.11 2002/09/05 18:41:19 mickey Exp $ */
/*
* Copyright (c) 1990,1993,1994 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Utah $Hdr: pmap.h 1.24 94/12/14$
* Author: Mike Hibler, Bob Wheeler, University of Utah CSL, 9/90
*/
#ifndef _MACHINE_PTE_H_
#define _MACHINE_PTE_H_
typedef u_int32_t pt_entry_t;
#define PTE_PROT_SHIFT 19
#define PTE_PROT(tlb) ((tlb) >> PTE_PROT_SHIFT)
#define TLB_PROT(pte) ((pte) << PTE_PROT_SHIFT)
#define PDE_MASK (0xffc00000)
#define PDE_SIZE (0x00400000)
#define PTE_MASK (0x003ff000)
#define PTE_PAGE(pte) ((pte) & ~PGOFSET)
/* TLB access/protection values */
#define TLB_WIRED 0x40000000 /* software only */
#define TLB_REFTRAP 0x20000000
#define TLB_DIRTY 0x10000000
#define TLB_BREAK 0x08000000
#define TLB_AR_MASK 0x07f00000
#define TLB_READ 0x00000000
#define TLB_WRITE 0x01000000
#define TLB_EXECUTE 0x02000000
#define TLB_GATEWAY 0x04000000
#define TLB_USER 0x00f00000
#define TLB_AR_NA 0x07300000
#define TLB_AR_R TLB_READ
#define TLB_AR_RW TLB_READ|TLB_WRITE
#define TLB_AR_RX TLB_READ|TLB_EXECUTE
#define TLB_AR_RWX TLB_READ|TLB_WRITE|TLB_EXECUTE
#define TLB_UNCACHABLE 0x00080000
#define TLB_PID_MASK 0x0000fffe
#define TLB_BITS "\020\024U\031W\032X\033N\034B\035D\036R\037H"
/* protection for a gateway page */
#define TLB_GATE_PROT 0x04c00000
/* protection for break page */
#define TLB_BREAK_PROT 0x02c00000
#endif /* _MACHINE_PTE_H_ */
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