pmap.h revision 112399
1/* 2 * Copyright (c) 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * the Systems Programming Group of the University of Utah Computer 7 * Science Department and William Jolitz of UUNET Technologies Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90 38 * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91 39 * from: FreeBSD: src/sys/i386/include/pmap.h,v 1.70 2000/11/30 40 * $FreeBSD: head/sys/sparc64/include/pmap.h 112399 2003-03-19 06:55:37Z jake $ 41 */ 42 43#ifndef _MACHINE_PMAP_H_ 44#define _MACHINE_PMAP_H_ 45 46#include <sys/queue.h> 47#include <machine/cache.h> 48#include <machine/tte.h> 49 50#define PMAP_CONTEXT_MAX 8192 51 52#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.tte_list)) 53#define pmap_resident_count(pm) (pm->pm_stats.resident_count) 54 55typedef struct pmap *pmap_t; 56 57struct md_page { 58 TAILQ_HEAD(, tte) tte_list; 59 struct pmap *pmap; 60 uint32_t colors[DCACHE_COLORS]; 61 int32_t color; 62 uint32_t flags; 63}; 64 65struct pmap { 66 struct tte *pm_tsb; 67 vm_object_t pm_tsb_obj; 68 u_int pm_active; 69 u_int pm_context[MAXCPU]; 70 struct pmap_statistics pm_stats; 71}; 72 73void pmap_bootstrap(vm_offset_t ekva); 74void pmap_context_rollover(void); 75vm_offset_t pmap_kextract(vm_offset_t va); 76void pmap_kenter(vm_offset_t va, vm_offset_t pa); 77void pmap_kremove(vm_offset_t); 78void pmap_kenter_flags(vm_offset_t va, vm_offset_t pa, u_long flags); 79void pmap_kremove_flags(vm_offset_t va); 80 81int pmap_cache_enter(vm_page_t m, vm_offset_t va); 82void pmap_cache_remove(vm_page_t m, vm_offset_t va); 83 84int pmap_remove_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp, 85 vm_offset_t va); 86int pmap_protect_tte(struct pmap *pm1, struct pmap *pm2, struct tte *tp, 87 vm_offset_t va); 88 89void pmap_map_tsb(void); 90 91void pmap_clear_write(vm_page_t m); 92 93#define vtophys(va) pmap_kextract(((vm_offset_t)(va))) 94 95extern vm_offset_t avail_start; 96extern vm_offset_t avail_end; 97extern struct pmap kernel_pmap_store; 98#define kernel_pmap (&kernel_pmap_store) 99extern vm_offset_t phys_avail[]; 100extern vm_offset_t virtual_avail; 101extern vm_offset_t virtual_end; 102 103extern vm_offset_t msgbuf_phys; 104 105static __inline int 106pmap_track_modified(pmap_t pm, vm_offset_t va) 107{ 108 if (pm == kernel_pmap) 109 return ((va < kmi.clean_sva) || (va >= kmi.clean_eva)); 110 else 111 return (1); 112} 113 114#ifdef PMAP_STATS 115 116SYSCTL_DECL(_debug_pmap_stats); 117 118#define PMAP_STATS_VAR(name) \ 119 static long name; \ 120 SYSCTL_LONG(_debug_pmap_stats, OID_AUTO, name, CTLFLAG_RD, \ 121 &name, 0, "") 122 123#define PMAP_STATS_INC(var) \ 124 atomic_add_long(&var, 1) 125 126#else 127 128#define PMAP_STATS_VAR(name) 129#define PMAP_STATS_INC(var) 130 131#endif 132 133#endif /* !_MACHINE_PMAP_H_ */ 134