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/* $OpenBSD: pte.h,v 1.11 2011/03/23 16:54:37 pirofti Exp $ */
/* $NetBSD: pte.h,v 1.21 2005/12/24 22:45:40 perry Exp $ */
/*
* Copyright (c) 1994 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed at Ludd, University of Lule}.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _MACHINE_PTE_H_
#define _MACHINE_PTE_H_
#ifndef _LOCORE
typedef u_int32_t pt_entry_t; /* Mach page table entry */
#endif /* _LOCORE */
#define PT_ENTRY_NULL ((pt_entry_t *) 0)
#define PG_V 0x80000000
#define PG_NV 0x00000000
#define PG_PROT 0x78000000
#define PG_RW 0x20000000
#define PG_KW 0x10000000
#define PG_KR 0x18000000
#define PG_URKW 0x70000000
#define PG_RO 0x78000000
#define PG_NONE 0x00000000
#define PG_M 0x04000000
#define PG_W 0x01000000
#define PG_SREF 0x00800000
#define PG_ILLEGAL 0x00600000
#define PG_FRAME 0x001fffff
#define PG_PFNUM(x) (((unsigned long)(x) & 0x3ffffe00) >> VAX_PGSHIFT)
#ifndef _LOCORE
extern pt_entry_t *Sysmap;
/*
* Kernel virtual address to page table entry and to physical address.
*/
#endif
#ifdef __ELF__
#define VAX_SYSMAP "Sysmap"
#else
#define VAX_SYSMAP "_Sysmap"
#endif
#ifdef __GNUC__
#define kvtopte(va) ({ \
pt_entry_t *r; \
__asm("extzv $9,$21,%1,%0;moval *" VAX_SYSMAP "[%0],%0" : "=r"(r) : "g"(va)); \
r; \
})
#define kvtophys(va) ({ \
paddr_t r; \
__asm("extzv $9,$21,%1,%0;ashl $9,*" VAX_SYSMAP "[%0],%0;insv %1,$0,$9,%0" \
: "=&r"(r) : "g"(va) : "cc"); \
r; \
})
#else /* __GNUC__ */
#define kvtopte(va) (&Sysmap[PG_PFNUM(va)])
#define kvtophys(va) \
(((*kvtopte(va) & PG_FRAME) << VAX_PGSHIFT) | ((int)(va) & VAX_PGOFSET))
#endif /* __GNUC__ */
#define uvtopte(va, pcb) \
(((vaddr_t)(va) < 0x40000000) ? \
&(((pcb)->P0BR)[PG_PFNUM(va)]) : \
&(((pcb)->P1BR)[PG_PFNUM(va)]))
#endif
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