6ac1fdec40
* Move mips-I pte (TLBlo) definitions from pmax/include/pte.h
to mips/include/mips1_pte.h
* Move mips-III pte (TLBlo) definitions from pica/include/pte.h
to mips/include/mips3_pte.h
* Add new mips/include/pte.h, which includes exactly one of
mips1_pte.h or mips3_pte.h (which still have namespace collisions),
depending on "options MIPS1" or "options MIPS3". (hack).
Move soft kvtopte(), ptetovk() definitions to mips/include/pte.h
* Add macro PTE_TO_PADDR() to hide the different hardware TLB formats
when mapping from pte to physical address.
* Add macro PTE_READONLY() to hide lack of SW read-only bit in mips-III
tlb. (mips1 pmap uses a sw bit in the PTE, mips3 looks up RO bit in
the kernel pmap.)
* Use macros (not direct TLB frobbing) in mips/trap.c, to make it
mips-1/mips-III indepenndet.
* Change {pmax,pica}/include/pte.h to just do #include <mips/pte.h>.
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/* $NetBSD: pte.h,v 1.1 1996/10/13 09:28:56 jonathan Exp $ */
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/*
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* Copyright 1996 The Board of Trustees of The Leland Stanford
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* Junior University. All Rights Reserved.
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*
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* Permission to use, copy, modify, and distribute this
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* software and its documentation for any purpose and without
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* fee is hereby granted, provided that the above copyright
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* notice appear in all copies. Stanford University
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* makes no representations about the suitability of this
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* software for any purpose. It is provided "as is" without
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* express or implied warranty.
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*/
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#ifndef __MIPS_PTE_H__
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#define __MIPS_PTE_H__
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#if defined(MIPS1) && defined(MIPS3)
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#error Cannot yet upport both "MIPS1" (r2000 family) and "MIP3" (r4000 family) in the same kernel.
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#endif
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#ifdef MIPS1
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#include <mips/mips1_pte.h>
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#endif
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#ifdef MIPS3
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#include <mips/mips3_pte.h>
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#endif
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#if defined(_KERNEL) && !defined(_LOCORE)
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/*
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* Kernel virtual address to page table entry and visa versa.
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*/
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#define kvtopte(va) \
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(Sysmap + (((vm_offset_t)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT))
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#define ptetokv(pte) \
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((((pt_entry_t *)(pte) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS)
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extern pt_entry_t *Sysmap; /* kernel pte table */
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extern u_int Sysmapsize; /* number of pte's in Sysmap */
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#endif /* defined(_KERNEL) && !defined(_LOCORE) */
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#endif /* __MIPS_PTE_H__ */
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