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pmap.h revision 1.25.4.3
      1  1.25.4.3  nathanw /*	$NetBSD: pmap.h,v 1.25.4.3 2002/11/11 22:02:53 nathanw Exp $	*/
      2  1.25.4.2  nathanw 
      3  1.25.4.2  nathanw /*-
      4  1.25.4.2  nathanw  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
      5  1.25.4.2  nathanw  * Copyright (C) 1995, 1996 TooLs GmbH.
      6  1.25.4.2  nathanw  * All rights reserved.
      7  1.25.4.2  nathanw  *
      8  1.25.4.2  nathanw  * Redistribution and use in source and binary forms, with or without
      9  1.25.4.2  nathanw  * modification, are permitted provided that the following conditions
     10  1.25.4.2  nathanw  * are met:
     11  1.25.4.2  nathanw  * 1. Redistributions of source code must retain the above copyright
     12  1.25.4.2  nathanw  *    notice, this list of conditions and the following disclaimer.
     13  1.25.4.2  nathanw  * 2. Redistributions in binary form must reproduce the above copyright
     14  1.25.4.2  nathanw  *    notice, this list of conditions and the following disclaimer in the
     15  1.25.4.2  nathanw  *    documentation and/or other materials provided with the distribution.
     16  1.25.4.2  nathanw  * 3. All advertising materials mentioning features or use of this software
     17  1.25.4.2  nathanw  *    must display the following acknowledgement:
     18  1.25.4.2  nathanw  *	This product includes software developed by TooLs GmbH.
     19  1.25.4.2  nathanw  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  1.25.4.2  nathanw  *    derived from this software without specific prior written permission.
     21  1.25.4.2  nathanw  *
     22  1.25.4.2  nathanw  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     23  1.25.4.2  nathanw  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  1.25.4.2  nathanw  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  1.25.4.2  nathanw  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  1.25.4.2  nathanw  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  1.25.4.2  nathanw  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  1.25.4.2  nathanw  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  1.25.4.2  nathanw  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  1.25.4.2  nathanw  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  1.25.4.2  nathanw  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  1.25.4.2  nathanw  */
     33  1.25.4.2  nathanw 
     34  1.25.4.3  nathanw #ifndef	_POWERPC_PMAP_H_
     35  1.25.4.3  nathanw #define	_POWERPC_PMAP_H_
     36  1.25.4.2  nathanw 
     37  1.25.4.2  nathanw #include <machine/pte.h>
     38  1.25.4.2  nathanw 
     39  1.25.4.2  nathanw /*
     40  1.25.4.2  nathanw  * Segment registers
     41  1.25.4.2  nathanw  */
     42  1.25.4.2  nathanw #ifndef	_LOCORE
     43  1.25.4.2  nathanw typedef u_int sr_t;
     44  1.25.4.2  nathanw #endif	/* _LOCORE */
     45  1.25.4.2  nathanw #define	SR_TYPE		0x80000000
     46  1.25.4.2  nathanw #define	SR_SUKEY	0x40000000
     47  1.25.4.2  nathanw #define	SR_PRKEY	0x20000000
     48  1.25.4.2  nathanw #define	SR_VSID		0x00ffffff
     49  1.25.4.2  nathanw 
     50  1.25.4.2  nathanw #ifndef _LOCORE
     51  1.25.4.2  nathanw /*
     52  1.25.4.2  nathanw  * Pmap stuff
     53  1.25.4.2  nathanw  */
     54  1.25.4.2  nathanw struct pmap {
     55  1.25.4.2  nathanw 	sr_t pm_sr[16];		/* segments used in this pmap */
     56  1.25.4.2  nathanw 	int pm_refs;		/* ref count */
     57  1.25.4.2  nathanw 	struct pmap_statistics pm_stats;	/* pmap statistics */
     58  1.25.4.2  nathanw };
     59  1.25.4.2  nathanw 
     60  1.25.4.2  nathanw typedef	struct pmap *pmap_t;
     61  1.25.4.2  nathanw 
     62  1.25.4.2  nathanw #ifdef	_KERNEL
     63  1.25.4.2  nathanw extern struct pmap kernel_pmap_;
     64  1.25.4.2  nathanw #define	pmap_kernel()	(&kernel_pmap_)
     65  1.25.4.2  nathanw 
     66  1.25.4.2  nathanw #define pmap_clear_modify(pg)		(ptemodify((pg), PTE_CHG, 0))
     67  1.25.4.2  nathanw #define	pmap_clear_reference(pg)	(ptemodify((pg), PTE_REF, 0))
     68  1.25.4.2  nathanw #define	pmap_is_modified(pg)		(ptebits((pg), PTE_CHG))
     69  1.25.4.2  nathanw #define	pmap_is_referenced(pg)		(ptebits((pg), PTE_REF))
     70  1.25.4.2  nathanw #define	pmap_unwire(pm, va)
     71  1.25.4.2  nathanw #define	pmap_update(pmap)		/* nothing (yet) */
     72  1.25.4.2  nathanw 
     73  1.25.4.2  nathanw static __inline void
     74  1.25.4.2  nathanw pmap_remove_all(struct pmap *pmap)
     75  1.25.4.2  nathanw {
     76  1.25.4.2  nathanw 	/* Nothing. */
     77  1.25.4.2  nathanw }
     78  1.25.4.2  nathanw 
     79  1.25.4.2  nathanw #define	pmap_phys_address(x)		(x)
     80  1.25.4.2  nathanw 
     81  1.25.4.2  nathanw #define	pmap_resident_count(pmap)	((pmap)->pm_stats.resident_count)
     82  1.25.4.2  nathanw #define	pmap_wired_count(pmap)		((pmap)->pm_stats.wired_count)
     83  1.25.4.2  nathanw 
     84  1.25.4.2  nathanw void pmap_bootstrap __P((u_int kernelstart, u_int kernelend));
     85  1.25.4.2  nathanw boolean_t pmap_extract __P((struct pmap *, vaddr_t, paddr_t *));
     86  1.25.4.2  nathanw boolean_t ptemodify __P((struct vm_page *, u_int, u_int));
     87  1.25.4.2  nathanw int ptebits __P((struct vm_page *, int));
     88  1.25.4.2  nathanw void pmap_real_memory __P((paddr_t *, psize_t *));
     89  1.25.4.2  nathanw void pmap_pinit __P((pmap_t));
     90  1.25.4.2  nathanw 
     91  1.25.4.2  nathanw #define PMAP_NEED_PROCWR
     92  1.25.4.2  nathanw void pmap_procwr __P((struct proc *, vaddr_t, size_t));
     93  1.25.4.2  nathanw 
     94  1.25.4.2  nathanw /*
     95  1.25.4.2  nathanw  * Alternate mapping hooks for pool pages.  Avoids thrashing the TLB.
     96  1.25.4.2  nathanw  *
     97  1.25.4.2  nathanw  * Note: This won't work if we have more memory than can be direct-mapped
     98  1.25.4.2  nathanw  * VA==PA all at once.  But pmap_copy_page() and pmap_zero_page() will have
     99  1.25.4.2  nathanw  * this problem, too.
    100  1.25.4.2  nathanw  */
    101  1.25.4.2  nathanw #define	PMAP_MAP_POOLPAGE(pa)	(pa)
    102  1.25.4.2  nathanw #define	PMAP_UNMAP_POOLPAGE(pa)	(pa)
    103  1.25.4.2  nathanw 
    104  1.25.4.2  nathanw static __inline paddr_t vtophys __P((vaddr_t));
    105  1.25.4.2  nathanw 
    106  1.25.4.2  nathanw static __inline paddr_t
    107  1.25.4.2  nathanw vtophys(va)
    108  1.25.4.2  nathanw 	vaddr_t va;
    109  1.25.4.2  nathanw {
    110  1.25.4.2  nathanw 	paddr_t pa;
    111  1.25.4.2  nathanw 
    112  1.25.4.2  nathanw 	/* XXX should check battable */
    113  1.25.4.2  nathanw 
    114  1.25.4.2  nathanw 	if (pmap_extract(pmap_kernel(), va, &pa))
    115  1.25.4.2  nathanw 		return pa;
    116  1.25.4.2  nathanw 	return va;
    117  1.25.4.2  nathanw }
    118  1.25.4.2  nathanw 
    119  1.25.4.2  nathanw #endif	/* _KERNEL */
    120  1.25.4.2  nathanw #endif	/* _LOCORE */
    121  1.25.4.2  nathanw 
    122  1.25.4.3  nathanw #endif	/* _POWERPC_PMAP_H_ */
    123