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mips1_pte.h revision 1.11.2.1
      1  1.11.2.1    bouyer /*	$NetBSD: mips1_pte.h,v 1.11.2.1 2000/11/20 20:13:31 bouyer Exp $	*/
      2       1.4       cgd 
      3       1.1   deraadt /*
      4       1.1   deraadt  * Copyright (c) 1988 University of Utah.
      5       1.2     glass  * Copyright (c) 1992, 1993
      6       1.2     glass  *	The Regents of the University of California.  All rights reserved.
      7       1.1   deraadt  *
      8       1.1   deraadt  * This code is derived from software contributed to Berkeley by
      9       1.1   deraadt  * the Systems Programming Group of the University of Utah Computer
     10       1.1   deraadt  * Science Department and Ralph Campbell.
     11       1.1   deraadt  *
     12       1.1   deraadt  * Redistribution and use in source and binary forms, with or without
     13       1.1   deraadt  * modification, are permitted provided that the following conditions
     14       1.1   deraadt  * are met:
     15       1.1   deraadt  * 1. Redistributions of source code must retain the above copyright
     16       1.1   deraadt  *    notice, this list of conditions and the following disclaimer.
     17       1.1   deraadt  * 2. Redistributions in binary form must reproduce the above copyright
     18       1.1   deraadt  *    notice, this list of conditions and the following disclaimer in the
     19       1.1   deraadt  *    documentation and/or other materials provided with the distribution.
     20       1.1   deraadt  * 3. All advertising materials mentioning features or use of this software
     21       1.1   deraadt  *    must display the following acknowledgement:
     22       1.1   deraadt  *	This product includes software developed by the University of
     23       1.1   deraadt  *	California, Berkeley and its contributors.
     24       1.1   deraadt  * 4. Neither the name of the University nor the names of its contributors
     25       1.1   deraadt  *    may be used to endorse or promote products derived from this software
     26       1.1   deraadt  *    without specific prior written permission.
     27       1.1   deraadt  *
     28       1.1   deraadt  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29       1.1   deraadt  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30       1.1   deraadt  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31       1.1   deraadt  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32       1.1   deraadt  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33       1.1   deraadt  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34       1.1   deraadt  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35       1.1   deraadt  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36       1.1   deraadt  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37       1.1   deraadt  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38       1.1   deraadt  * SUCH DAMAGE.
     39       1.1   deraadt  *
     40       1.1   deraadt  * from: Utah Hdr: pte.h 1.11 89/09/03
     41       1.2     glass  *
     42       1.4       cgd  *	@(#)pte.h	8.1 (Berkeley) 6/10/93
     43       1.1   deraadt  */
     44       1.1   deraadt 
     45       1.1   deraadt /*
     46       1.1   deraadt  * R2000 hardware page table entry
     47       1.1   deraadt  */
     48       1.1   deraadt 
     49       1.6   mycroft #ifndef _LOCORE
     50      1.10  jonathan struct mips1_pte {
     51       1.1   deraadt #if BYTE_ORDER == BIG_ENDIAN
     52       1.1   deraadt unsigned int	pg_pfnum:20,		/* HW: core page frame number or 0 */
     53       1.1   deraadt 		pg_n:1,			/* HW: non-cacheable bit */
     54      1.11  nisimura 		pg_m:1,			/* HW: dirty bit */
     55       1.1   deraadt 		pg_v:1,			/* HW: valid bit */
     56       1.1   deraadt 		pg_g:1,			/* HW: ignore pid bit */
     57       1.1   deraadt 		:4,
     58       1.1   deraadt 		pg_swapm:1,		/* SW: page must be forced to swap */
     59       1.1   deraadt 		pg_fod:1,		/* SW: is fill on demand (=0) */
     60       1.1   deraadt 		pg_prot:2;		/* SW: access control */
     61       1.1   deraadt #endif
     62       1.1   deraadt #if BYTE_ORDER == LITTLE_ENDIAN
     63       1.1   deraadt unsigned int	pg_prot:2,		/* SW: access control */
     64       1.1   deraadt 		pg_fod:1,		/* SW: is fill on demand (=0) */
     65       1.1   deraadt 		pg_swapm:1,		/* SW: page must be forced to swap */
     66       1.1   deraadt 		:4,
     67       1.1   deraadt 		pg_g:1,			/* HW: ignore pid bit */
     68       1.1   deraadt 		pg_v:1,			/* HW: valid bit */
     69      1.11  nisimura 		pg_m:1,			/* HW: dirty bit */
     70       1.1   deraadt 		pg_n:1,			/* HW: non-cacheable bit */
     71       1.1   deraadt 		pg_pfnum:20;		/* HW: core page frame number or 0 */
     72       1.1   deraadt #endif
     73       1.1   deraadt };
     74       1.6   mycroft #endif /* _LOCORE */
     75       1.1   deraadt 
     76      1.10  jonathan #define	MIPS1_PG_PROT	0x00000003
     77      1.10  jonathan #define MIPS1_PG_RW	0x00000000
     78      1.10  jonathan #define MIPS1_PG_RO	0x00000001
     79      1.10  jonathan #define MIPS1_PG_WIRED	0x00000002
     80      1.10  jonathan #define	MIPS1_PG_G	0x00000100
     81      1.10  jonathan #define	MIPS1_PG_V	0x00000200
     82      1.10  jonathan #define	MIPS1_PG_NV	0x00000000
     83      1.11  nisimura #define	MIPS1_PG_D	0x00000400
     84      1.10  jonathan #define	MIPS1_PG_N	0x00000800
     85      1.10  jonathan #define	MIPS1_PG_FRAME	0xfffff000
     86      1.10  jonathan #define MIPS1_PG_SHIFT	12
     87      1.10  jonathan #define	MIPS1_PG_PFNUM(x) (((x) & MIPS1_PG_FRAME) >> MIPS1_PG_SHIFT)
     88      1.10  jonathan 
     89      1.11  nisimura #define	MIPS1_PG_ROPAGE	MIPS1_PG_V
     90      1.11  nisimura #define	MIPS1_PG_RWPAGE	MIPS1_PG_D
     91      1.10  jonathan #define	MIPS1_PG_CWPAGE	0
     92      1.11  nisimura #define	MIPS1_PG_IOPAGE	(MIPS1_PG_D | MIPS1_PG_N)
     93       1.9    mhitch 
     94  1.11.2.1    bouyer #define	mips1_tlbpfn_to_paddr(x)	((x) & MIPS1_PG_FRAME)
     95  1.11.2.1    bouyer #define	mips1_paddr_to_tlbpfn(x)	(x)
     96       1.9    mhitch 
     97      1.10  jonathan #define	MIPS1_PTE_TO_PADDR(pte) ((unsigned)(pte) & MIPS1_PG_FRAME)
     98  1.11.2.1    bouyer #define MIPS1_PAGE_IS_RDONLY(pte,va) ((int)(pte) & MIPS1_PG_RO)
     99