1 /* $NetBSD: pmap.h,v 1.23 2002/05/09 12:28:08 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * NetBSD/sh3 pmap: 41 * pmap.pm_ptp[512] ... 512 slot of page table page 42 * page table page contains 1024 PTEs. (PAGE_SIZE / sizeof(pt_entry_t)) 43 * | PTP 11bit | PTOFSET 10bit | PGOFSET 12bit | 44 */ 45 46 #ifndef _SH3_PMAP_H_ 47 #define _SH3_PMAP_H_ 48 #include <sys/queue.h> 49 #include <sh3/pte.h> 50 51 #define PMAP_NEED_PROCWR 52 #define PMAP_STEAL_MEMORY 53 #define PMAP_GROWKERNEL 54 55 #define __PMAP_PTP_N 512 /* # of page table page maps 2GB. */ 56 typedef struct pmap { 57 pt_entry_t **pm_ptp; 58 int pm_asid; 59 int pm_refcnt; 60 struct pmap_statistics pm_stats; /* pmap statistics */ 61 } *pmap_t; 62 extern struct pmap __pmap_kernel; 63 64 void pmap_bootstrap(void); 65 void pmap_procwr(struct proc *, vaddr_t, size_t); 66 #define pmap_kernel() (&__pmap_kernel) 67 #define pmap_update(pmap) ((void)0) 68 #define pmap_copy(dp,sp,d,l,s) ((void)0) 69 #define pmap_collect(pmap) ((void)0) 70 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 71 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 72 73 #define PMAP_MAP_POOLPAGE(pa) SH3_PHYS_TO_P1SEG((pa)) 74 #define PMAP_UNMAP_POOLPAGE(va) SH3_P1SEG_TO_PHYS((va)) 75 76 /* MD pmap utils. */ 77 pt_entry_t *__pmap_pte_lookup(pmap_t, vaddr_t); 78 pt_entry_t *__pmap_kpte_lookup(vaddr_t); 79 boolean_t __pmap_pte_load(pmap_t, vaddr_t, int); 80 #endif /* !_SH3_PMAP_H_ */ 81