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Annotation of src/sys/arch/powerpc/include/oea/pmap.h, Revision 1.3

1.3     ! matt        1: /*     $NetBSD: pmap.h,v 1.2 2003/02/05 07:05:19 matt Exp $    */
1.1       matt        2:
                      3: /*-
                      4:  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
                      5:  * Copyright (C) 1995, 1996 TooLs GmbH.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by TooLs GmbH.
                     19:  * 4. The name of TooLs GmbH may not be used to endorse or promote products
                     20:  *    derived from this software without specific prior written permission.
                     21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
                     23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     25:  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
                     26:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     27:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     28:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     29:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     30:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     31:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32:  */
                     33:
                     34: #ifndef        _POWERPC_OEA_PMAP_H_
                     35: #define        _POWERPC_OEA_PMAP_H_
                     36:
                     37: #include <powerpc/oea/pte.h>
                     38:
                     39: #ifndef _LOCORE
                     40: /*
                     41:  * Pmap stuff
                     42:  */
                     43: struct pmap {
1.2       matt       44:        register_t pm_sr[16];                   /* segments used in this pmap */
                     45:        int pm_refs;                            /* ref count */
1.1       matt       46:        struct pmap_statistics pm_stats;        /* pmap statistics */
1.2       matt       47:        unsigned int pm_evictions;              /* pvo's not in page table */
1.1       matt       48: };
                     49:
                     50: typedef        struct pmap *pmap_t;
                     51:
                     52: #ifdef _KERNEL
1.2       matt       53: extern register_t iosrtable[];
1.1       matt       54: extern int pmap_use_altivec;
                     55: extern struct pmap kernel_pmap_;
                     56: #define        pmap_kernel()   (&kernel_pmap_)
                     57:
                     58: #define pmap_clear_modify(pg)          (pmap_clear_bit((pg), PTE_CHG))
                     59: #define        pmap_clear_reference(pg)        (pmap_clear_bit((pg), PTE_REF))
                     60: #define        pmap_is_modified(pg)            (pmap_query_bit((pg), PTE_CHG))
                     61: #define        pmap_is_referenced(pg)          (pmap_query_bit((pg), PTE_REF))
                     62:
                     63: #define        pmap_phys_address(x)            (x)
                     64:
                     65: #define        pmap_resident_count(pmap)       ((pmap)->pm_stats.resident_count)
                     66: #define        pmap_wired_count(pmap)          ((pmap)->pm_stats.wired_count)
                     67:
1.3     ! matt       68: /* ARGSUSED */
1.1       matt       69: static __inline void
                     70: pmap_remove_all(struct pmap *pmap)
                     71: {
                     72:        /* Nothing. */
                     73: }
                     74:
                     75: void pmap_bootstrap (vaddr_t kernelstart, vaddr_t kernelend);
                     76: boolean_t pmap_extract (struct pmap *, vaddr_t, paddr_t *);
                     77: boolean_t pmap_query_bit (struct vm_page *, int);
                     78: boolean_t pmap_clear_bit (struct vm_page *, int);
                     79: void pmap_real_memory (paddr_t *, psize_t *);
                     80: void pmap_pinit (struct pmap *);
                     81: boolean_t pmap_pageidlezero (paddr_t);
                     82: void pmap_syncicache (paddr_t, psize_t);
                     83:
                     84: #define PMAP_NEED_PROCWR
                     85: void pmap_procwr (struct proc *, vaddr_t, size_t);
                     86:
                     87: int pmap_pte_spill(struct pmap *, vaddr_t);
                     88:
                     89: #define        PMAP_NC                 0x1000
                     90:
                     91: #define PMAP_STEAL_MEMORY
                     92: #if 1
                     93: /*
                     94:  * Alternate mapping hooks for pool pages.  Avoids thrashing the TLB.
                     95:  *
                     96:  * Note: This won't work if we have more memory than can be direct-mapped
                     97:  * VA==PA all at once.  But pmap_copy_page() and pmap_zero_page() will have
                     98:  * this problem, too.
                     99:  */
                    100: #define        PMAP_MAP_POOLPAGE(pa)   (pa)
                    101: #define        PMAP_UNMAP_POOLPAGE(pa) (pa)
                    102: #endif
                    103:
                    104: static __inline paddr_t vtophys (vaddr_t);
                    105:
                    106: static __inline paddr_t
                    107: vtophys(vaddr_t va)
                    108: {
                    109:        paddr_t pa;
                    110:
                    111:        /* XXX should check battable */
                    112:
                    113:        if (pmap_extract(pmap_kernel(), va, &pa))
                    114:                return pa;
                    115:        return va;
                    116: }
                    117:
                    118: #endif /* _KERNEL */
                    119: #endif /* _LOCORE */
                    120:
                    121: #endif /* _POWERPC_OEA_PMAP_H_ */

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