/* $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_ */
