pmap_tlb.h revision 1.2
1 /* $NetBSD: pmap_tlb.h,v 1.2 2013/07/17 23:15:20 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell. 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. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)pmap.h 8.1 (Berkeley) 6/10/93 35 */ 36 37 /* 38 * Copyright (c) 1987 Carnegie-Mellon University 39 * 40 * This code is derived from software contributed to Berkeley by 41 * Ralph Campbell. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the University of 54 * California, Berkeley and its contributors. 55 * 4. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)pmap.h 8.1 (Berkeley) 6/10/93 72 */ 73 74 #ifndef _COMMON_PMAP_TLB_H_ 75 #define _COMMON_PMAP_TLB_H_ 76 77 #include <sys/kcpuset.h> 78 79 #if defined(MULTIPROCESSOR) && !defined(PMAP_TLB_MAX) 80 #define PMAP_TLB_MAX MAXCPUS 81 #endif 82 83 /* 84 * Per TLB (normally same as CPU) asid info 85 */ 86 struct pmap_asid_info { 87 LIST_ENTRY(pmap_asid_info) pai_link; 88 uint32_t pai_asid; /* TLB address space tag */ 89 }; 90 91 #define TLBINFO_LOCK(ti) mutex_spin_enter((ti)->ti_lock) 92 #define TLBINFO_UNLOCK(ti) mutex_spin_exit((ti)->ti_lock) 93 #define PMAP_PAI_ASIDVALID_P(pai, ti) ((pai)->pai_asid != 0) 94 #define PMAP_PAI(pmap, ti) (&(pmap)->pm_pai[tlbinfo_index(ti)]) 95 #define PAI_PMAP(pai, ti) \ 96 ((pmap_t)((intptr_t)(pai) \ 97 - offsetof(struct pmap, pm_pai[tlbinfo_index(ti)]))) 98 99 enum tlb_invalidate_op { 100 TLBINV_NOBODY=0, 101 TLBINV_ONE=1, 102 TLBINV_ALLUSER=2, 103 TLBINV_ALLKERNEL=3, 104 TLBINV_ALL=4 105 }; 106 107 struct pmap_tlb_info { 108 char ti_name[8]; 109 uint32_t ti_asids_free; /* # of ASIDs free */ 110 #define tlbinfo_noasids_p(ti) ((ti)->ti_asids_free == 0) 111 kmutex_t *ti_lock; 112 u_int ti_wired; /* # of wired TLB entries */ 113 tlb_asid_t ti_asid_hint; /* probable next ASID to use */ 114 tlb_asid_t ti_asid_max; 115 LIST_HEAD(, pmap_asid_info) ti_pais; /* list of active ASIDs */ 116 #ifdef MULTIPROCESSOR 117 pmap_t ti_victim; 118 uint32_t ti_synci_page_bitmap; /* page indices needing a syncicache */ 119 #if PMAP_TLB_MAX > 1 120 kcpuset_t *ti_kcpuset; /* bitmask of CPUs sharing this TLB */ 121 u_int ti_index; 122 enum tlb_invalidate_op ti_tlbinvop; 123 #define tlbinfo_index(ti) ((ti)->ti_index) 124 #else 125 #define tlbinfo_index(ti) (0) 126 #endif 127 struct evcnt ti_evcnt_synci_asts; 128 struct evcnt ti_evcnt_synci_all; 129 struct evcnt ti_evcnt_synci_pages; 130 struct evcnt ti_evcnt_synci_deferred; 131 struct evcnt ti_evcnt_synci_desired; 132 struct evcnt ti_evcnt_synci_duplicate; 133 #else 134 #define tlbinfo_index(ti) (0) 135 #endif 136 struct evcnt ti_evcnt_asid_reinits; 137 u_long ti_asid_bitmap[256 / (sizeof(u_long) * 8)]; 138 }; 139 140 #ifdef _KERNEL 141 extern struct pmap_tlb_info pmap_tlb0_info; 142 #ifdef MULTIPROCESSOR 143 extern struct pmap_tlb_info *pmap_tlbs[MAXCPUS]; 144 extern u_int pmap_ntlbs; 145 #endif 146 147 #ifndef cpu_set_tlb_info 148 #define cpu_set_tlb_info(ci, ti) ((void)((ci)->ci_tlb_info = (ti))) 149 #endif 150 #ifndef cpu_tlb_info 151 #define cpu_tlb_info(ci) ((ci)->ci_tlb_info) 152 #endif 153 154 #ifdef MULTIPROCESSOR 155 void pmap_tlb_shootdown_process(void); 156 bool pmap_tlb_shootdown_bystanders(pmap_t pmap); 157 void pmap_tlb_info_attach(struct pmap_tlb_info *, struct cpu_info *); 158 void pmap_md_tlb_info_attach(struct pmap_tlb_info *, struct cpu_info *); 159 #endif 160 void pmap_tlb_info_init(struct pmap_tlb_info *); 161 void pmap_tlb_info_evcnt_attach(struct pmap_tlb_info *); 162 void pmap_tlb_asid_acquire(pmap_t, struct lwp *l); 163 void pmap_tlb_asid_deactivate(pmap_t); 164 void pmap_tlb_asid_release_all(pmap_t); 165 int pmap_tlb_update_addr(pmap_t, vaddr_t, uint32_t, u_int); 166 #define PMAP_TLB_NEED_IPI 0x01 167 #define PMAP_TLB_INSERT 0x02 168 void pmap_tlb_invalidate_addr(pmap_t, vaddr_t); 169 void pmap_tlb_check(pmap_t, bool (*)(void *, vaddr_t, tlb_asid_t, pt_entry_t)); 170 void pmap_tlb_asid_check(void); 171 172 #endif /* _KERNEL */ 173 #endif /* _COMMON_PMAP_TLB_H_ */ 174
Indexes created Mon Sep 22 13:09:51 GMT 2025