pmap.h revision 1.16.18.9
1 /* $NetBSD: pmap.h,v 1.16.18.9 2009/01/25 10:28:29 skrll Exp $ */ 2 3 /* $OpenBSD: pmap.h,v 1.35 2007/12/14 18:32:23 deraadt Exp $ */ 4 5 /* 6 * Copyright (c) 2002-2004 Michael Shalayeff 7 * All rights reserved. 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 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Pmap header for hppa. 33 */ 34 35 #ifndef _HPPA_PMAP_H_ 36 #define _HPPA_PMAP_H_ 37 38 #include <sys/mutex.h> 39 #include <machine/pte.h> 40 #include <machine/cpufunc.h> 41 42 #include <uvm/uvm_pglist.h> 43 #include <uvm/uvm_object.h> 44 45 #ifdef _KERNEL 46 47 struct pmap { 48 struct uvm_object pm_obj; /* object (lck by object lock) */ 49 #define pm_lock pm_obj.vmobjlock 50 struct vm_page *pm_ptphint; 51 struct vm_page *pm_pdir_pg; /* vm_page for pdir */ 52 volatile u_int32_t *pm_pdir; /* page dir (read-only after create) */ 53 pa_space_t pm_space; /* space id (read-only after create) */ 54 u_int pm_pid; /* prot id (read-only after create) */ 55 56 struct pmap_statistics pm_stats; 57 }; 58 59 #define PMAP_NC 0x100 60 61 #define HPPA_MAX_PID 0xfffa 62 #define HPPA_SID_MAX 0x7ffd 63 #if 0 64 #define HPPA_SID_KERNEL 0 65 #endif 66 #define HPPA_PID_KERNEL 2 67 68 struct pv_entry { /* locked by its list's pvh_lock */ 69 struct pv_entry *pv_next; 70 struct pmap *pv_pmap; /* the pmap */ 71 vaddr_t pv_va; /* the virtual address */ 72 struct vm_page *pv_ptp; /* the vm_page of the PTP */ 73 }; 74 75 extern struct pmap kernel_pmap_store; 76 77 #if defined(HP7100LC_CPU) || defined(HP7300LC_CPU) 78 extern int pmap_hptsize; 79 extern struct pdc_hwtlb pdc_hwtlb; 80 #endif 81 82 /* 83 * pool quickmaps 84 */ 85 static inline vaddr_t hppa_map_poolpage(paddr_t pa) 86 { 87 return (vaddr_t)pa; 88 } 89 90 static inline paddr_t hppa_unmap_poolpage(vaddr_t va) 91 { 92 pdcache(HPPA_SID_KERNEL, va, PAGE_SIZE); 93 94 return (paddr_t)va; 95 } 96 97 #define PMAP_MAP_POOLPAGE(pa) hppa_map_poolpage(pa) 98 #define PMAP_UNMAP_POOLPAGE(va) hppa_unmap_poolpage(va) 99 100 /* 101 * according to the parisc manual aliased va's should be 102 * different by high 12 bits only. 103 */ 104 #define PMAP_PREFER(o,h,s,td) do { \ 105 vaddr_t pmap_prefer_hint; \ 106 pmap_prefer_hint = (*(h) & HPPA_PGAMASK) | ((o) & HPPA_PGAOFF); \ 107 if (pmap_prefer_hint < *(h)) \ 108 pmap_prefer_hint += HPPA_PGALIAS; \ 109 *(h) = pmap_prefer_hint; \ 110 } while(0) 111 112 #define pmap_sid2pid(s) (((s) + 1) << 1) 113 #define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count) 114 #define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count) 115 #define pmap_update(p) 116 117 #define pmap_copy(dpmap,spmap,da,len,sa) 118 119 #define pmap_clear_modify(pg) pmap_changebit(pg, 0, PTE_PROT(TLB_DIRTY)) 120 #define pmap_clear_reference(pg) \ 121 pmap_changebit(pg, PTE_PROT(TLB_REFTRAP), 0) 122 #define pmap_is_modified(pg) pmap_testbit(pg, PTE_PROT(TLB_DIRTY)) 123 #define pmap_is_referenced(pg) pmap_testbit(pg, PTE_PROT(TLB_REFTRAP)) 124 #define pmap_phys_address(ppn) ((ppn) << PAGE_SHIFT) 125 126 void pmap_activate(struct lwp *); 127 128 void pmap_bootstrap(vaddr_t); 129 bool pmap_changebit(struct vm_page *, u_int, u_int); 130 bool pmap_testbit(struct vm_page *, u_int); 131 void pmap_write_protect(struct pmap *, vaddr_t, vaddr_t, vm_prot_t); 132 void pmap_remove(struct pmap *pmap, vaddr_t sva, vaddr_t eva); 133 void pmap_page_remove(struct vm_page *pg); 134 135 static inline void 136 pmap_deactivate(struct lwp *l) 137 { 138 /* Nothing. */ 139 } 140 141 static inline void 142 pmap_remove_all(struct pmap *pmap) 143 { 144 /* Nothing. */ 145 } 146 147 static inline int 148 pmap_prot(struct pmap *pmap, int prot) 149 { 150 extern u_int hppa_prot[]; 151 return (hppa_prot[prot] | (pmap == pmap_kernel()? 0 : TLB_USER)); 152 } 153 154 static inline void 155 pmap_page_protect(struct vm_page *pg, vm_prot_t prot) 156 { 157 if ((prot & UVM_PROT_WRITE) == 0) { 158 if (prot & (UVM_PROT_RX)) 159 pmap_changebit(pg, 0, PTE_PROT(TLB_WRITE)); 160 else 161 pmap_page_remove(pg); 162 } 163 } 164 165 static inline void 166 pmap_protect(struct pmap *pmap, vaddr_t sva, vaddr_t eva, vm_prot_t prot) 167 { 168 if ((prot & UVM_PROT_WRITE) == 0) { 169 if (prot & (UVM_PROT_RX)) 170 pmap_write_protect(pmap, sva, eva, prot); 171 else 172 pmap_remove(pmap, sva, eva); 173 } 174 } 175 176 #define pmap_sid(pmap, va) \ 177 ((((va) & 0xc0000000) != 0xc0000000) ? \ 178 (pmap)->pm_space : HPPA_SID_KERNEL) 179 180 #endif /* _KERNEL */ 181 182 #endif /* _HPPA_PMAP_H_ */ 183
Indexes created Mon Oct 27 04:09:48 GMT 2025