86 lines
3.1 KiB
C
86 lines
3.1 KiB
C
/* $NetBSD: pte.h,v 1.10 1996/05/05 04:18:28 gwr Exp $ */
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/*
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* Copyright (c) 1994 Gordon W. Ross
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* Copyright (c) 1993 Adam Glass
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Adam Glass.
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* 4. The name of the Author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _MACHINE_PTE_H
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#define _MACHINE_PTE_H
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#define NCONTEXT 8
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#define SEGINV 255
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#define NPAGSEG 16
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#define NSEGMAP 2048
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#define PG_VALID 0x80000000
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#define PG_WRITE 0x40000000
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#define PG_SYSTEM 0x20000000
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#define PG_NC 0x10000000
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#define PG_TYPE 0x0C000000
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#define PG_REF 0x02000000
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#define PG_MOD 0x01000000
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#define PG_SPECIAL (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC|PG_REF|PG_MOD)
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#define PG_PERM (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC)
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#define PG_MODREF (PG_REF|PG_MOD)
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#define PG_FRAME 0x0007FFFF
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#define PG_MOD_SHIFT 24
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#define PG_PERM_SHIFT 28
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#define OBMEM 0
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#define OBIO 1
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#define VME_D16 2
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#define VME_D32 3
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#define PG_TYPE_SHIFT 26
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#define PG_INVAL 0x0
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#define MAKE_PGTYPE(x) ((x) << PG_TYPE_SHIFT)
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#define PG_PGNUM(pte) (pte & PG_FRAME)
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#define PG_PA(pte) ((pte & PG_FRAME) <<PGSHIFT)
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#define PGT_MASK MAKE_PGTYPE(3)
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#define PGT_OBMEM MAKE_PGTYPE(OBMEM) /* onboard memory */
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#define PGT_OBIO MAKE_PGTYPE(OBIO) /* onboard I/O */
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#define PGT_VME_D16 MAKE_PGTYPE(VME_D16) /* VMEbus 16-bit data */
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#define PGT_VME_D32 MAKE_PGTYPE(VME_D32) /* VMEbus 32-bit data */
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#define VA_SEGNUM(x) ((u_int)(x) >> SEGSHIFT)
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#define VA_PTE_NUM_SHIFT 13
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#define VA_PTE_NUM_MASK (0xF << VA_PTE_NUM_SHIFT)
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#define VA_PTE_NUM(va) ((va & VA_PTE_NUM_MASK) >> VA_PTE_NUM_SHIFT)
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#define PA_PGNUM(pa) ((unsigned)pa >> PGSHIFT)
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#endif /* !_MACHINE_PTE_H*/
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