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pte.h revision 1.5
      1  1.1  briggs /*
      2  1.1  briggs  * Copyright (c) 1988 University of Utah.
      3  1.1  briggs  * Copyright (c) 1982, 1990 The Regents of the University of California.
      4  1.1  briggs  * All rights reserved.
      5  1.1  briggs  *
      6  1.1  briggs  * This code is derived from software contributed to Berkeley by
      7  1.1  briggs  * the Systems Programming Group of the University of Utah Computer
      8  1.1  briggs  * Science Department.
      9  1.1  briggs  *
     10  1.1  briggs  * Redistribution and use in source and binary forms, with or without
     11  1.1  briggs  * modification, are permitted provided that the following conditions
     12  1.1  briggs  * are met:
     13  1.1  briggs  * 1. Redistributions of source code must retain the above copyright
     14  1.1  briggs  *    notice, this list of conditions and the following disclaimer.
     15  1.1  briggs  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1  briggs  *    notice, this list of conditions and the following disclaimer in the
     17  1.1  briggs  *    documentation and/or other materials provided with the distribution.
     18  1.1  briggs  * 3. All advertising materials mentioning features or use of this software
     19  1.1  briggs  *    must display the following acknowledgement:
     20  1.1  briggs  *	This product includes software developed by the University of
     21  1.1  briggs  *	California, Berkeley and its contributors.
     22  1.1  briggs  * 4. Neither the name of the University nor the names of its contributors
     23  1.1  briggs  *    may be used to endorse or promote products derived from this software
     24  1.1  briggs  *    without specific prior written permission.
     25  1.1  briggs  *
     26  1.1  briggs  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     27  1.1  briggs  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     28  1.1  briggs  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     29  1.1  briggs  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     30  1.1  briggs  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     31  1.1  briggs  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     32  1.1  briggs  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     33  1.1  briggs  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     34  1.1  briggs  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     35  1.1  briggs  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     36  1.1  briggs  * SUCH DAMAGE.
     37  1.1  briggs  */
     38  1.1  briggs /*-
     39  1.1  briggs  * Copyright (C) 1993	Allen K. Briggs, Chris P. Caputo,
     40  1.1  briggs  *			Michael L. Finch, Bradley A. Grantham, and
     41  1.1  briggs  *			Lawrence A. Kesteloot
     42  1.1  briggs  * All rights reserved.
     43  1.1  briggs  *
     44  1.1  briggs  * Redistribution and use in source and binary forms, with or without
     45  1.1  briggs  * modification, are permitted provided that the following conditions
     46  1.1  briggs  * are met:
     47  1.1  briggs  * 1. Redistributions of source code must retain the above copyright
     48  1.1  briggs  *    notice, this list of conditions and the following disclaimer.
     49  1.1  briggs  * 2. Redistributions in binary form must reproduce the above copyright
     50  1.1  briggs  *    notice, this list of conditions and the following disclaimer in the
     51  1.1  briggs  *    documentation and/or other materials provided with the distribution.
     52  1.1  briggs  * 3. All advertising materials mentioning features or use of this software
     53  1.1  briggs  *    must display the following acknowledgement:
     54  1.1  briggs  *	This product includes software developed by the Alice Group.
     55  1.1  briggs  * 4. The names of the Alice Group or any of its members may not be used
     56  1.1  briggs  *    to endorse or promote products derived from this software without
     57  1.1  briggs  *    specific prior written permission.
     58  1.1  briggs  *
     59  1.1  briggs  * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
     60  1.1  briggs  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     61  1.1  briggs  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     62  1.1  briggs  * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
     63  1.1  briggs  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     64  1.1  briggs  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     65  1.1  briggs  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     66  1.1  briggs  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     67  1.1  briggs  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     68  1.1  briggs  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     69  1.1  briggs  *
     70  1.1  briggs  */
     71  1.1  briggs /*
     72  1.1  briggs  * from: Utah $Hdr: pte.h 1.11 89/09/03$
     73  1.1  briggs  *
     74  1.2  briggs  *	from: @(#)pte.h	7.3 (Berkeley) 5/8/91
     75  1.5  briggs  *	$Id: pte.h,v 1.5 1994/06/26 13:23:01 briggs Exp $
     76  1.1  briggs  */
     77  1.1  briggs 
     78  1.4  briggs #ifndef _MACHINE_PTE_H_
     79  1.4  briggs #define _MACHINE_PTE_H_	1
     80  1.4  briggs 
     81  1.1  briggs /*
     82  1.1  briggs  * Mac hardware segment/page table entries
     83  1.1  briggs  */
     84  1.1  briggs 
     85  1.1  briggs struct ste {
     86  1.1  briggs 	unsigned int	sg_pfnum:20;	/* page table frame number */
     87  1.1  briggs 	unsigned int	:8;		/* reserved at 0 */
     88  1.1  briggs 	unsigned int	:1;		/* reserved at 1 */
     89  1.1  briggs 	unsigned int	sg_prot:1;	/* write protect bit */
     90  1.1  briggs 	unsigned int	sg_v:2;		/* valid bits */
     91  1.1  briggs };
     92  1.1  briggs 
     93  1.1  briggs struct pte {
     94  1.1  briggs 	unsigned int	pg_pfnum:20;	/* page frame number or 0 */
     95  1.1  briggs 	unsigned int	:3;
     96  1.1  briggs 	unsigned int	pg_w:1;		/* is wired */
     97  1.1  briggs 	unsigned int	:1;		/* reserved at zero */
     98  1.1  briggs 	unsigned int	pg_ci:1;	/* cache inhibit bit */
     99  1.4  briggs 	unsigned int	pg_cm1:1;	/* cache mode, lsb (68040) */
    100  1.1  briggs 	unsigned int	pg_m:1;		/* hardware modified (dirty) bit */
    101  1.1  briggs 	unsigned int	pg_u:1;		/* hardware used (reference) bit */
    102  1.1  briggs 	unsigned int	pg_prot:1;	/* write protect bit */
    103  1.1  briggs 	unsigned int	pg_v:2;		/* valid bit */
    104  1.1  briggs };
    105  1.1  briggs 
    106  1.1  briggs typedef struct ste	st_entry_t;	/* segment table entry */
    107  1.1  briggs typedef struct pte	pt_entry_t;	/* Mach page table entry */
    108  1.1  briggs 
    109  1.1  briggs #define	PT_ENTRY_NULL	((pt_entry_t *) 0)
    110  1.1  briggs #define	ST_ENTRY_NULL	((st_entry_t *) 0)
    111  1.1  briggs 
    112  1.1  briggs #define	SG_V		0x00000002	/* segment is valid */
    113  1.1  briggs #define	SG_NV		0x00000000
    114  1.1  briggs #define	SG_PROT		0x00000004	/* access protection mask */
    115  1.1  briggs #define	SG_RO		0x00000004
    116  1.1  briggs #define	SG_RW		0x00000000
    117  1.1  briggs #define	SG_FRAME	0xfffff000
    118  1.4  briggs #define	SG_IMASK1	0xfe000000
    119  1.4  briggs #define	SG_IMASK2	0x01fc0000
    120  1.4  briggs #define	SG_040IMASK	0xfffc0000
    121  1.4  briggs #define	SG_040PMASK	0x0003f000
    122  1.4  briggs #define	SG_ISHIFT1	25
    123  1.4  briggs #define	SG_040ISHIFT	18
    124  1.1  briggs #define	SG_IMASK	0xffc00000
    125  1.1  briggs #define	SG_PMASK	0x003ff000
    126  1.1  briggs #define	SG_ISHIFT	22
    127  1.1  briggs #define	SG_PSHIFT	12
    128  1.1  briggs 
    129  1.1  briggs #define	PG_V		0x00000001
    130  1.1  briggs #define	PG_NV		0x00000000
    131  1.1  briggs #define	PG_PROT		0x00000004
    132  1.1  briggs #define	PG_U		0x00000008
    133  1.1  briggs #define	PG_M		0x00000010
    134  1.1  briggs #define	PG_W		0x00000100
    135  1.1  briggs #define	PG_RO		0x00000004
    136  1.1  briggs #define	PG_RW		0x00000000
    137  1.4  briggs #define	PG_CI		0x00000040
    138  1.5  briggs #define	PG_CCB		0x00000020
    139  1.4  briggs #define	PG_CIN		0x00000060
    140  1.1  briggs #define	PG_FRAME	0xfffff000
    141  1.1  briggs #define PG_SHIFT	12
    142  1.1  briggs #define	PG_PFNUM(x)	(((x) & PG_FRAME) >> PG_SHIFT)
    143  1.1  briggs 
    144  1.4  briggs #define MAC_040RTSIZE	512		/* root (level 1) table size */
    145  1.4  briggs #define MAC_040STSIZE	512		/* segment (level 2) table size */
    146  1.4  briggs #define MAC_040PTSIZE	128		/* page (level 3) table size */
    147  1.1  briggs #define MAC_STSIZE	MAC_PAGE_SIZE	/* segment table size */
    148  1.1  briggs #define MAC_MAX_PTSIZE	MAC_SEG_SIZE	/* max size of UPT */
    149  1.1  briggs #define MAC_MAX_KPTSIZE	0x100000	/* max memory to allocate to KPT */
    150  1.3  briggs #define MAC_PTBASE	0x60100000	/* UPT map base address */
    151  1.1  briggs #define MAC_PTMAXSIZE	0x70000000	/* UPT map maximum size */
    152  1.1  briggs 
    153  1.1  briggs /*
    154  1.1  briggs  * Kernel virtual address to page table entry and to physical address.
    155  1.1  briggs  */
    156  1.1  briggs #define	kvtopte(va) \
    157  1.1  briggs 	(&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT])
    158  1.1  briggs #define	kvtoste(va) \
    159  1.1  briggs 	(&Sysseg[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> SEGSHIFT])
    160  1.1  briggs #define	ptetokv(pt) \
    161  1.1  briggs 	((((pt_entry_t *)(pt) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS)
    162  1.1  briggs #define	kvtophys(va) \
    163  1.1  briggs 	((kvtopte(va)->pg_pfnum << PGSHIFT) | ((int)(va) & PGOFSET))
    164  1.4  briggs 
    165  1.4  briggs #endif /* _MACHINE_PTE_H_ */
    166