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pte.h revision 1.23.40.1
      1  1.23.40.1    skrll /*	$NetBSD: pte.h,v 1.23.40.1 2017/08/28 17:51:54 skrll Exp $	  */
      2        1.2      cgd 
      3        1.1    ragge /*
      4        1.1    ragge  * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
      5        1.1    ragge  * All rights reserved.
      6        1.1    ragge  *
      7        1.1    ragge  * Redistribution and use in source and binary forms, with or without
      8        1.1    ragge  * modification, are permitted provided that the following conditions
      9        1.1    ragge  * are met:
     10        1.1    ragge  * 1. Redistributions of source code must retain the above copyright
     11        1.1    ragge  *    notice, this list of conditions and the following disclaimer.
     12        1.1    ragge  * 2. Redistributions in binary form must reproduce the above copyright
     13        1.1    ragge  *    notice, this list of conditions and the following disclaimer in the
     14        1.1    ragge  *    documentation and/or other materials provided with the distribution.
     15        1.1    ragge  *
     16        1.1    ragge  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17        1.1    ragge  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18        1.1    ragge  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19        1.1    ragge  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20        1.1    ragge  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21        1.1    ragge  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22        1.1    ragge  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23        1.1    ragge  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24        1.1    ragge  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25        1.1    ragge  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26        1.1    ragge  */
     27        1.1    ragge 
     28       1.13    ragge #ifndef _VAX_PTE_H_
     29       1.13    ragge #define _VAX_PTE_H_
     30        1.1    ragge 
     31        1.9  mycroft #ifndef _LOCORE
     32        1.1    ragge /*
     33        1.1    ragge  * VAX page table entries
     34        1.1    ragge  */
     35        1.1    ragge struct pte {
     36        1.6    ragge 	unsigned int	pg_pfn:21;	/* Page Frame Number or 0 */
     37       1.17    ragge 	unsigned int	pg_illegal:2;	/* Don't use this bits */
     38        1.6    ragge 	unsigned int	pg_sref:1;	/* Help for ref simulation */
     39       1.17    ragge 	unsigned int	pg_w:1;		/* Wired bit */
     40        1.6    ragge 	unsigned int	pg_z:1;		/* Zero DIGITAL = 0 */
     41       1.17    ragge 	unsigned int	pg_m:1;		/* Modify DIGITAL */
     42       1.17    ragge 	unsigned int	pg_prot:4;	/* reserved at zero */
     43        1.6    ragge 	unsigned int	pg_v:1;		/* valid bit */
     44        1.1    ragge };
     45        1.1    ragge 
     46        1.1    ragge 
     47        1.6    ragge typedef struct pte	pt_entry_t;	/* Mach page table entry */
     48        1.1    ragge 
     49       1.19   simonb #endif /* _LOCORE */
     50        1.1    ragge 
     51       1.17    ragge #define PG_V		0x80000000
     52       1.17    ragge #define PG_NV		0x00000000
     53       1.17    ragge #define PG_PROT		0x78000000
     54       1.17    ragge #define PG_RW		0x20000000
     55       1.17    ragge #define PG_KW		0x10000000
     56       1.17    ragge #define PG_KR		0x18000000
     57       1.17    ragge #define PG_URKW		0x70000000
     58       1.17    ragge #define PG_RO		0x78000000
     59       1.17    ragge #define PG_NONE		0x00000000
     60       1.17    ragge #define PG_M		0x04000000
     61       1.17    ragge #define PG_W		0x01000000
     62       1.17    ragge #define PG_SREF		0x00800000
     63       1.17    ragge #define PG_ILLEGAL	0x00600000
     64       1.17    ragge #define PG_FRAME	0x001fffff
     65       1.17    ragge #define PG_PFNUM(x)	(((unsigned long)(x) & 0x3ffffe00) >> VAX_PGSHIFT)
     66        1.1    ragge 
     67        1.9  mycroft #ifndef _LOCORE
     68        1.4    ragge extern pt_entry_t *Sysmap;
     69        1.1    ragge /*
     70        1.1    ragge  * Kernel virtual address to page table entry and to physical address.
     71        1.1    ragge  */
     72        1.1    ragge #endif
     73        1.1    ragge 
     74       1.14    ragge #ifdef __GNUC__
     75       1.23     matt #define	kvtopte(va)	kvtopte0((vaddr_t) (va))
     76       1.23     matt static inline struct pte *
     77       1.23     matt kvtopte0(vaddr_t va)
     78       1.23     matt {
     79       1.23     matt 	struct pte *pt;
     80       1.23     matt #ifdef _RUMPKERNEL
     81       1.23     matt 	__asm(
     82       1.23     matt 		"extzv $9,$21,%1,%0\n\t"
     83       1.23     matt 		"moval %2[%0],%0\n\t"
     84       1.23     matt 	     : "=r"(pt)
     85       1.23     matt 	     : "g"(va), "o"(*Sysmap));
     86       1.23     matt #else
     87       1.23     matt 	__asm(
     88       1.23     matt 		"extzv $9,$21,%1,%0\n\t"
     89       1.23     matt 		"moval *Sysmap[%0],%0\n\t"
     90       1.23     matt 	     : "=r"(pt)
     91       1.23     matt 	     : "g"(va));
     92       1.23     matt #endif
     93       1.23     matt 	return pt;
     94       1.23     matt }
     95       1.23     matt 
     96       1.23     matt #define	kvtophys(va)	kvtophys0((vaddr_t) (va))
     97       1.23     matt static inline paddr_t
     98       1.23     matt kvtophys0(vaddr_t va)
     99       1.23     matt {
    100       1.23     matt 	paddr_t pa;
    101       1.23     matt #ifdef _RUMPKERNEL
    102       1.23     matt 	__asm(
    103       1.23     matt 		"extzv $9,$21,%1,%0\n\t"
    104       1.23     matt 		"ashl $9,%2[%0],%0\n\t"
    105       1.23     matt 		"insv %1,$0,$9,%0\n\t"
    106       1.23     matt 	    : "=&r"(pa)
    107       1.23     matt 	    : "g"(va), "o"(*Sysmap) : "cc");
    108       1.23     matt #else
    109       1.23     matt 	__asm(
    110       1.23     matt 		"extzv $9,$21,%1,%0\n\t"
    111       1.23     matt 		"ashl $9,*Sysmap[%0],%0\n\t"
    112       1.23     matt 		"insv %1,$0,$9,%0\n\t"
    113       1.23     matt 	    : "=&r"(pa)
    114       1.23     matt 	    : "g"(va) : "cc");
    115       1.23     matt #endif
    116       1.23     matt 	return pa;
    117       1.23     matt }
    118       1.14    ragge #else /* __GNUC__ */
    119       1.17    ragge #define kvtophys(va) \
    120       1.18      chs 	(((kvtopte(va))->pg_pfn << VAX_PGSHIFT) | ((paddr_t)(va) & VAX_PGOFSET))
    121       1.17    ragge #define kvtopte(va) (&Sysmap[PG_PFNUM(va)])
    122       1.14    ragge #endif /* __GNUC__ */
    123       1.17    ragge #define uvtopte(va, pcb) \
    124       1.18      chs 	(((vaddr_t)va < 0x40000000) ? \
    125       1.18      chs 	&(((pcb)->P0BR)[PG_PFNUM(va)]) : \
    126       1.18      chs 	&(((pcb)->P1BR)[PG_PFNUM(va)]))
    127       1.13    ragge 
    128       1.13    ragge #endif
    129