pmap.h revision 1.1.2.3
1 1.1.2.3 yamt /* $NetBSD: pmap.h,v 1.1.2.3 2014/05/22 11:41:19 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /* 4 1.1.2.2 yamt * Copyright (c) 1992, 1993 5 1.1.2.2 yamt * The Regents of the University of California. All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * This code is derived from software contributed to Berkeley by 8 1.1.2.2 yamt * Ralph Campbell. 9 1.1.2.2 yamt * 10 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 yamt * modification, are permitted provided that the following conditions 12 1.1.2.2 yamt * are met: 13 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.1.2.2 yamt * 3. Neither the name of the University nor the names of its contributors 19 1.1.2.2 yamt * may be used to endorse or promote products derived from this software 20 1.1.2.2 yamt * without specific prior written permission. 21 1.1.2.2 yamt * 22 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 1.1.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 1.1.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 1.1.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 1.1.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 1.1.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 1.1.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 1.1.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 1.1.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 1.1.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 1.1.2.2 yamt * SUCH DAMAGE. 33 1.1.2.2 yamt * 34 1.1.2.2 yamt * @(#)pmap.h 8.1 (Berkeley) 6/10/93 35 1.1.2.2 yamt */ 36 1.1.2.2 yamt 37 1.1.2.2 yamt /* 38 1.1.2.2 yamt * Copyright (c) 1987 Carnegie-Mellon University 39 1.1.2.2 yamt * 40 1.1.2.2 yamt * This code is derived from software contributed to Berkeley by 41 1.1.2.2 yamt * Ralph Campbell. 42 1.1.2.2 yamt * 43 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 44 1.1.2.2 yamt * modification, are permitted provided that the following conditions 45 1.1.2.2 yamt * are met: 46 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 47 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 48 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 49 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 50 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 51 1.1.2.2 yamt * 3. All advertising materials mentioning features or use of this software 52 1.1.2.2 yamt * must display the following acknowledgement: 53 1.1.2.2 yamt * This product includes software developed by the University of 54 1.1.2.2 yamt * California, Berkeley and its contributors. 55 1.1.2.2 yamt * 4. Neither the name of the University nor the names of its contributors 56 1.1.2.2 yamt * may be used to endorse or promote products derived from this software 57 1.1.2.2 yamt * without specific prior written permission. 58 1.1.2.2 yamt * 59 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 1.1.2.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 1.1.2.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 1.1.2.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 1.1.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 1.1.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 1.1.2.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 1.1.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 1.1.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 1.1.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 1.1.2.2 yamt * SUCH DAMAGE. 70 1.1.2.2 yamt * 71 1.1.2.2 yamt * @(#)pmap.h 8.1 (Berkeley) 6/10/93 72 1.1.2.2 yamt */ 73 1.1.2.2 yamt 74 1.1.2.2 yamt #ifndef _COMMON_PMAP_H_ 75 1.1.2.2 yamt #define _COMMON_PMAP_H_ 76 1.1.2.2 yamt 77 1.1.2.2 yamt #include <uvm/uvm_stat.h> 78 1.1.2.2 yamt #ifdef UVMHIST 79 1.1.2.2 yamt UVMHIST_DECL(pmapexechist); 80 1.1.2.2 yamt UVMHIST_DECL(pmaphist); 81 1.1.2.2 yamt #endif 82 1.1.2.2 yamt 83 1.1.2.2 yamt /* 84 1.1.2.2 yamt * The user address space is mapped using a two level structure where 85 1.1.2.2 yamt * virtual address bits 31..22 are used to index into a segment table which 86 1.1.2.2 yamt * points to a page worth of PTEs (4096 page can hold 1024 PTEs). 87 1.1.2.2 yamt * Bits 21..12 are then used to index a PTE which describes a page within 88 1.1.2.2 yamt * a segment. 89 1.1.2.2 yamt */ 90 1.1.2.2 yamt 91 1.1.2.2 yamt #define pmap_trunc_seg(x) ((vaddr_t)(x) & ~SEGOFSET) 92 1.1.2.2 yamt #define pmap_round_seg(x) (((vaddr_t)(x) + SEGOFSET) & ~SEGOFSET) 93 1.1.2.2 yamt 94 1.1.2.2 yamt /* 95 1.1.2.2 yamt * Each seg_tab point an array of pt_entry [NPTEPG] 96 1.1.2.2 yamt */ 97 1.1.2.2 yamt typedef union pmap_segtab { 98 1.1.2.2 yamt union pmap_segtab * seg_seg[PMAP_SEGTABSIZE]; 99 1.1.2.2 yamt pt_entry_t * seg_tab[PMAP_SEGTABSIZE]; 100 1.1.2.2 yamt } pmap_segtab_t; 101 1.1.2.2 yamt 102 1.1.2.2 yamt #ifdef _KERNEL 103 1.1.2.2 yamt struct pmap; 104 1.1.2.2 yamt typedef bool (*pte_callback_t)(struct pmap *, vaddr_t, vaddr_t, 105 1.1.2.2 yamt pt_entry_t *, uintptr_t); 106 1.1.2.2 yamt pt_entry_t *pmap_pte_lookup(struct pmap *, vaddr_t); 107 1.1.2.2 yamt pt_entry_t *pmap_pte_reserve(struct pmap *, vaddr_t, int); 108 1.1.2.2 yamt void pmap_pte_process(struct pmap *, vaddr_t, vaddr_t, pte_callback_t, 109 1.1.2.2 yamt uintptr_t); 110 1.1.2.2 yamt void pmap_segtab_activate(struct pmap *, struct lwp *); 111 1.1.2.2 yamt void pmap_segtab_init(struct pmap *); 112 1.1.2.2 yamt void pmap_segtab_destroy(struct pmap *, pte_callback_t, uintptr_t); 113 1.1.2.2 yamt extern kmutex_t pmap_segtab_lock; 114 1.1.2.2 yamt #endif /* _KERNEL */ 115 1.1.2.2 yamt 116 1.1.2.3 yamt #ifdef MULTIPROCESSOR 117 1.1.2.3 yamt #include <sys/kcpuset.h> 118 1.1.2.3 yamt #endif 119 1.1.2.3 yamt #include <uvm/pmap/pmap_tlb.h> 120 1.1.2.2 yamt 121 1.1.2.2 yamt /* 122 1.1.2.2 yamt * Machine dependent pmap structure. 123 1.1.2.2 yamt */ 124 1.1.2.2 yamt struct pmap { 125 1.1.2.2 yamt #ifdef MULTIPROCESSOR 126 1.1.2.3 yamt kcpuset_t *pm_active; /* pmap was active on ... */ 127 1.1.2.3 yamt kcpuset_t *pm_onproc; /* pmap is active on ... */ 128 1.1.2.2 yamt volatile u_int pm_shootdown_pending; 129 1.1.2.2 yamt #endif 130 1.1.2.2 yamt pmap_segtab_t * pm_segtab; /* pointers to pages of PTEs */ 131 1.1.2.2 yamt u_int pm_count; /* pmap reference count */ 132 1.1.2.2 yamt u_int pm_flags; 133 1.1.2.2 yamt #define PMAP_DEFERRED_ACTIVATE 0x0001 134 1.1.2.2 yamt struct pmap_statistics pm_stats; /* pmap statistics */ 135 1.1.2.2 yamt vaddr_t pm_minaddr; 136 1.1.2.2 yamt vaddr_t pm_maxaddr; 137 1.1.2.2 yamt struct pmap_asid_info pm_pai[1]; 138 1.1.2.2 yamt }; 139 1.1.2.2 yamt 140 1.1.2.2 yamt #ifdef _KERNEL 141 1.1.2.2 yamt struct pmap_kernel { 142 1.1.2.2 yamt struct pmap kernel_pmap; 143 1.1.2.3 yamt #if defined(MULTIPROCESSOR) && PMAP_TLB_MAX > 1 144 1.1.2.3 yamt struct pmap_asid_info kernel_pai[PMAP_TLB_MAX-1]; 145 1.1.2.2 yamt #endif 146 1.1.2.2 yamt }; 147 1.1.2.2 yamt 148 1.1.2.2 yamt struct pmap_limits { 149 1.1.2.2 yamt paddr_t avail_start; 150 1.1.2.2 yamt paddr_t avail_end; 151 1.1.2.2 yamt vaddr_t virtual_end; 152 1.1.2.2 yamt }; 153 1.1.2.2 yamt 154 1.1.2.2 yamt /* 155 1.1.2.2 yamt * The pools from which pmap structures and sub-structures are allocated. 156 1.1.2.2 yamt */ 157 1.1.2.2 yamt extern struct pool pmap_pmap_pool; 158 1.1.2.2 yamt extern struct pool pmap_pv_pool; 159 1.1.2.2 yamt extern struct pool_allocator pmap_pv_page_allocator; 160 1.1.2.2 yamt 161 1.1.2.2 yamt extern struct pmap_kernel kernel_pmap_store; 162 1.1.2.2 yamt extern struct pmap_limits pmap_limits; 163 1.1.2.2 yamt 164 1.1.2.2 yamt #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 165 1.1.2.2 yamt #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 166 1.1.2.2 yamt 167 1.1.2.2 yamt /* 168 1.1.2.2 yamt * Bootstrap the system enough to run with virtual memory. 169 1.1.2.2 yamt */ 170 1.1.2.2 yamt void pmap_remove_all(pmap_t); 171 1.1.2.2 yamt void pmap_set_modified(paddr_t); 172 1.1.2.2 yamt bool pmap_page_clear_attributes(struct vm_page_md *, u_int); 173 1.1.2.2 yamt void pmap_page_set_attributes(struct vm_page_md *, u_int); 174 1.1.2.2 yamt void pmap_pvlist_lock_init(size_t); 175 1.1.2.2 yamt 176 1.1.2.2 yamt #define PMAP_WB 0 177 1.1.2.2 yamt #define PMAP_WBINV 1 178 1.1.2.2 yamt #define PMAP_INV 2 179 1.1.2.2 yamt 180 1.1.2.2 yamt uint16_t pmap_pvlist_lock(struct vm_page_md *, bool); 181 1.1.2.2 yamt 182 1.1.2.2 yamt #define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */ 183 1.1.2.2 yamt #define PMAP_GROWKERNEL /* enable pmap_growkernel() */ 184 1.1.2.2 yamt 185 1.1.2.2 yamt /* 186 1.1.2.2 yamt * Alternate mapping hooks for pool pages. Avoids thrashing the TLB. 187 1.1.2.2 yamt */ 188 1.1.2.2 yamt vaddr_t pmap_map_poolpage(paddr_t); 189 1.1.2.2 yamt paddr_t pmap_unmap_poolpage(vaddr_t); 190 1.1.2.2 yamt struct vm_page *pmap_md_alloc_poolpage(int); 191 1.1.2.2 yamt #define PMAP_ALLOC_POOLPAGE(flags) pmap_md_alloc_poolpage(flags) 192 1.1.2.2 yamt #define PMAP_MAP_POOLPAGE(pa) pmap_map_poolpage(pa) 193 1.1.2.2 yamt #define PMAP_UNMAP_POOLPAGE(va) pmap_unmap_poolpage(va) 194 1.1.2.2 yamt 195 1.1.2.2 yamt #endif /* _KERNEL */ 196 1.1.2.2 yamt #endif /* _COMMON_PMAP_H_ */ 197
Indexes created Sun Oct 26 13:09:57 GMT 2025