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 86 struct pmap *pmap_phys; 87 struct pmap_statistics pm_stats; 88 }; 89 90 typedef struct pmap *pmap_t; 91 92 struct pvo_entry { 93 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 94 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 95 union { 96 struct pte pte; /* 32 bit PTE */ 97 struct lpte lpte; /* 64 bit PTE */ 98 } pvo_pte; 99 pmap_t pvo_pmap; /* Owning pmap */ 100 vm_offset_t pvo_vaddr; /* VA of entry */ 101 }; 102 LIST_HEAD(pvo_head, pvo_entry); 103 104 struct md_page { 105 u_int64_t mdpg_attrs; 106 struct pvo_head mdpg_pvoh; 107 }; 108 109 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 110 111 #else 112 113 struct pmap { 114 struct mtx pm_mtx; /* pmap mutex */ 115 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 116 u_int pm_active; /* active on cpus */ 117 int pm_refs; /* ref count */ 118 struct pmap_statistics pm_stats; /* pmap statistics */ 119 120 /* Page table directory, array of pointers to page tables. */ 121 pte_t *pm_pdir[PDIR_NENTRIES]; 122 123 /* List of allocated ptbl bufs (ptbl kva regions). */ 124 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 125 }; 126 typedef struct pmap *pmap_t; 127 128 struct pv_entry { 129 pmap_t pv_pmap; 130 vm_offset_t pv_va; 131 TAILQ_ENTRY(pv_entry) pv_link; 132 }; 133 typedef struct pv_entry *pv_entry_t; 134 135 struct md_page { 136 TAILQ_HEAD(, pv_entry) pv_list; 137 }; 138 139 #define MEM_REGIONS 8 140 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 141 142 #endif /* AIM */ 143 144 extern struct pmap kernel_pmap_store; 145 #define kernel_pmap (&kernel_pmap_store) 146 147 #ifdef _KERNEL 148 149 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 150 #define PMAP_LOCK_ASSERT(pmap, type) \ 151 mtx_assert(&(pmap)->pm_mtx, (type)) 152 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 153 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 154 NULL, MTX_DEF) 155 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 156 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 157 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 158 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 159 160 void pmap_bootstrap(vm_offset_t, vm_offset_t); 161 void pmap_kenter(vm_offset_t va, vm_offset_t pa); 162 void pmap_kremove(vm_offset_t); 163 void *pmap_mapdev(vm_offset_t, vm_size_t); 164 boolean_t pmap_page_executable(vm_page_t); 165 void pmap_unmapdev(vm_offset_t, vm_size_t); 166 void pmap_deactivate(struct thread *); 167 vm_offset_t pmap_kextract(vm_offset_t); 168 int pmap_dev_direct_mapped(vm_offset_t, vm_size_t); 169 boolean_t pmap_mmu_install(char *name, int prio); 170 171 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 172 173 #define PHYS_AVAIL_SZ 128 174 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 175 extern vm_offset_t virtual_avail; 176 extern vm_offset_t virtual_end; 177 178 extern vm_offset_t msgbuf_phys; 179 180 extern int pmap_bootstrapped; 181 182 #endif 183 184 #endif /* !_MACHINE_PMAP_H_ */ 185