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/* $OpenBSD: pte.h,v 1.2 2008/06/26 05:42:13 ray Exp $ */
/* $NetBSD: pte.h,v 1.11 2006/03/04 01:55:03 uwe Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* 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.
*
* 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 _SH_PTE_H_
#define _SH_PTE_H_
/*
* OpenBSD/sh PTE format.
*
* [Hardware bit]
* SH3
* PPN V PR SZ C D SH
* [28:10][8][6:5][4][3][2][1]
*
* SH4
* V SZ PR SZ C D SH WT
* [28:10][8][7][6:5][4][3][2][1][0]
*
* [Software bit]
* [31] - PMAP_WIRED bit (not hardware wired entry)
* [11:9] - SH4 PCMCIA Assistant bit. (space attribute bit only)
*/
/*
* Hardware bits
*/
#define PG_PPN 0x1ffff000 /* Physical page number mask */
#define PG_V 0x00000100 /* Valid */
#define PG_PR_MASK 0x00000060 /* Page protection mask */
#define PG_PR_URW 0x00000060 /* kernel/user read/write */
#define PG_PR_URO 0x00000040 /* kernel/user read only */
#define PG_PR_KRW 0x00000020 /* kernel read/write */
#define PG_PR_KRO 0x00000000 /* kernel read only */
#define PG_4K 0x00000010 /* page size 4KB */
#define PG_C 0x00000008 /* Cacheable */
#define PG_D 0x00000004 /* Dirty */
#define PG_SH 0x00000002 /* Share status */
#define PG_WT 0x00000001 /* Write-through (SH4 only) */
#define PG_HW_BITS 0x1ffff17e /* [28:12][8][6:1] */
/*
* Software bits
*/
#define _PG_WIRED 0x80000000
/* SH4 PCMCIA MMU support bits */
/* PTEA SA (Space Attribute bit) */
#define _PG_PCMCIA 0x00000e00 /* [11:9] */
#define _PG_PCMCIA_SHIFT 9
#define _PG_PCMCIA_NONE 0x00000000 /* Non PCMCIA space */
#define _PG_PCMCIA_IO 0x00000200 /* IOIS16 signal */
#define _PG_PCMCIA_IO8 0x00000400 /* 8 bit I/O */
#define _PG_PCMCIA_IO16 0x00000600 /* 16 bit I/O */
#define _PG_PCMCIA_MEM8 0x00000800 /* 8 bit common memory */
#define _PG_PCMCIA_MEM16 0x00000a00 /* 16 bit common memory */
#define _PG_PCMCIA_ATTR8 0x00000c00 /* 8 bit attribute */
#define _PG_PCMCIA_ATTR16 0x00000e00 /* 16 bit attribute */
#ifndef _LOCORE
typedef uint32_t pt_entry_t;
#endif /* _LOCORE */
#endif /* !_SH_PTE_H_ */
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