99 lines
3.7 KiB
C
99 lines
3.7 KiB
C
/* $NetBSD: pte.h,v 1.8 2002/05/09 12:28:08 uch Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by UCHIYAMA Yasushi.
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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 the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SH3_PTE_H_
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#define _SH3_PTE_H_
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/*
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* NetBSD/sh3 PTE format.
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*
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* [Hardware bit]
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* SH3
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* PPN V PR SZ C D SH
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* [28:10][8][6:5][4][3][2][1]
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*
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* SH4
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* V SZ PR SZ C D SH WT
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* [28:10][8][7][6:5][4][3][2][1][0]
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*
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* [Software bit]
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* [31] - PMAP_WIRED bit (not hardware wired entry)
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* [11:9] - SH4 PCMCIA Assistant bit. (space attribute bit only)
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*/
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/*
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* Hardware bits
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*/
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#define PG_PPN 0x1ffff000 /* Phisical page number mask */
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#define PG_V 0x00000100 /* Valid */
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#define PG_PR_MASK 0x00000060 /* Page protection mask */
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#define PG_PR_URW 0x00000060 /* kernel/user read/write */
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#define PG_PR_URO 0x00000040 /* kernel/user read only */
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#define PG_PR_KRW 0x00000020 /* kernel read/write */
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#define PG_PR_KRO 0x00000000 /* kernel read only */
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#define PG_4K 0x00000010 /* page size 4KB */
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#define PG_C 0x00000008 /* Cacheable */
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#define PG_D 0x00000004 /* Dirty */
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#define PG_SH 0x00000002 /* Share status */
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#define PG_WT 0x00000001 /* Write-through (SH4 only) */
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#define PG_HW_BITS 0x1ffff17e /* [28:12][8][6:1] */
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/*
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* Software bits
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*/
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#define _PG_WIRED 0x80000000
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/* SH4 PCMCIA MMU support bits */
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/* PTEA SA (Space Attribute bit) */
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#define _PG_PCMCIA 0x00000e00 /* [11:9] */
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#define _PG_PCMCIA_SHIFT 9
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#define _PG_PCMCIA_NONE 0x00000000 /* Non PCMCIA space */
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#define _PG_PCMCIA_IO 0x00000200 /* IOIS16 signal */
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#define _PG_PCMCIA_IO8 0x00000400 /* 8 bit I/O */
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#define _PG_PCMCIA_IO16 0x00000600 /* 16 bit I/O */
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#define _PG_PCMCIA_MEM8 0x00000800 /* 8 bit common memory */
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#define _PG_PCMCIA_MEM16 0x00000a00 /* 16 bit common memory */
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#define _PG_PCMCIA_ATTR8 0x00000c00 /* 8 bit attribute */
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#define _PG_PCMCIA_ATTR16 0x00000e00 /* 16 bit attribute */
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#ifndef _LOCORE
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typedef u_int32_t pt_entry_t;
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#endif /* _LOCORE */
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#endif /* !_SH3_PTE_H_ */
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