1 /*- 2 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com> 3 * All rights reserved. 4 * 5 * Adapted for Freescale's e500 core CPUs. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 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. IN 21 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 /*- 32 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 33 * Copyright (C) 1995, 1996 TooLs GmbH. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by TooLs GmbH. 47 * 4. The name of TooLs GmbH may not be used to endorse or promote products 48 * derived from this software without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 51 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 52 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 53 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 55 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 56 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 57 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 58 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 59 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60 * 61 * from: $NetBSD: pmap.h,v 1.17 2000/03/30 16:18:24 jdolecek Exp $ 62 */ 63 64 #ifndef _MACHINE_PMAP_H_ 65 #define _MACHINE_PMAP_H_ 66 67 #include <sys/queue.h> 68 #include <sys/_lock.h> 69 #include <sys/_mutex.h> 70 #include <machine/sr.h> 71 #include <machine/pte.h> 72 #include <machine/tlb.h> 73 74 #if defined(AIM) 75 76 #if !defined(NPMAPS) 77 #define NPMAPS 32768 78 #endif /* !defined(NPMAPS) */ 79 80 struct pmap { 81 struct mtx pm_mtx; 82 u_int pm_sr[16]; 83 u_int pm_active; 84 u_int pm_context; 85 struct pmap_statistics pm_stats; 86 }; 87 88 typedef struct pmap *pmap_t; 89 90 struct pvo_entry { 91 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 92 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 93 struct pte pvo_pte; /* PTE */ 94 pmap_t pvo_pmap; /* Owning pmap */ 95 vm_offset_t pvo_vaddr; /* VA of entry */ 96 }; 97 LIST_HEAD(pvo_head, pvo_entry); 98 99 struct md_page { 100 u_int mdpg_attrs; 101 struct pvo_head mdpg_pvoh; 102 }; 103 104 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 105 106 #else 107 108 struct pmap { 109 struct mtx pm_mtx; /* pmap mutex */ 110 tlbtid_t pm_tid; /* TID to identify this pmap entries in TLB */ 111 u_int pm_active; /* active on cpus */ 112 int pm_refs; /* ref count */ 113 struct pmap_statistics pm_stats;/* pmap statistics */ 114 115 /* Page table directory, array of pointers to page tables. */ 116 pte_t *pm_pdir[PDIR_NENTRIES]; 117 118 /* List of allocated ptbl bufs (ptbl kva regions). */ 119 TAILQ_HEAD(, ptbl_buf) ptbl_list; 120 }; 121 typedef struct pmap *pmap_t; 122 123 struct pv_entry { 124 pmap_t pv_pmap; 125 vm_offset_t pv_va; 126 TAILQ_ENTRY(pv_entry) pv_link; 127 }; 128 typedef struct pv_entry *pv_entry_t; 129 130 struct md_page { 131 TAILQ_HEAD(, pv_entry) pv_list; 132 }; 133 134 #define MEM_REGIONS 8 135 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 136 137 #endif /* AIM */ 138 139 extern struct pmap kernel_pmap_store; 140 #define kernel_pmap (&kernel_pmap_store) 141 142 #ifdef _KERNEL 143 144 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 145 #define PMAP_LOCK_ASSERT(pmap, type) \ 146 mtx_assert(&(pmap)->pm_mtx, (type)) 147 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 148 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 149 NULL, MTX_DEF) 150 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 151 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 152 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 153 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 154 155 void pmap_bootstrap(vm_offset_t, vm_offset_t); 156 void pmap_kenter(vm_offset_t va, vm_offset_t pa); 157 void pmap_kremove(vm_offset_t); 158 void *pmap_mapdev(vm_offset_t, vm_size_t); 159 boolean_t pmap_page_executable(vm_page_t); 160 void pmap_unmapdev(vm_offset_t, vm_size_t); 161 void pmap_deactivate(struct thread *); 162 vm_offset_t pmap_kextract(vm_offset_t); 163 int pmap_dev_direct_mapped(vm_offset_t, vm_size_t); 164 boolean_t pmap_mmu_install(char *name, int prio); 165 166 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 167 168 #define PHYS_AVAIL_SZ 128 169 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 170 extern vm_offset_t virtual_avail; 171 extern vm_offset_t virtual_end; 172 173 extern vm_offset_t msgbuf_phys; 174 175 extern int pmap_bootstrapped; 176 177 #endif 178 179 #endif /* !_MACHINE_PMAP_H_ */ 180