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 struct pmap_md { 75 u_int md_index; 76 vm_paddr_t md_paddr; 77 vm_offset_t md_vaddr; 78 vm_size_t md_size; 79 }; 80 81 #if defined(AIM) 82 83 #if !defined(NPMAPS) 84 #define NPMAPS 32768 85 #endif /* !defined(NPMAPS) */ 86 87 struct pmap { 88 struct mtx pm_mtx; 89 u_int pm_sr[16]; 90 u_int pm_active; 91 uint32_t pm_gen_count; /* generation count (pmap lock dropped) */ 92 u_int pm_retries; 93 u_int pm_context; 94 95 struct pmap *pmap_phys; 96 struct pmap_statistics pm_stats; 97 }; 98 99 typedef struct pmap *pmap_t; 100 101 struct pvo_entry { 102 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 103 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 104 union { 105 struct pte pte; /* 32 bit PTE */ 106 struct lpte lpte; /* 64 bit PTE */ 107 } pvo_pte; 108 pmap_t pvo_pmap; /* Owning pmap */ 109 vm_offset_t pvo_vaddr; /* VA of entry */ 110 }; 111 LIST_HEAD(pvo_head, pvo_entry); 112 113 struct md_page { 114 u_int64_t mdpg_attrs; 115 struct pvo_head mdpg_pvoh; 116 }; 117 118 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 119 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 120 #define pmap_page_set_memattr(m, ma) (void)0 121 122 #else 123 124 struct pmap { 125 struct mtx pm_mtx; /* pmap mutex */ 126 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 127 u_int pm_active; /* active on cpus */ 128 uint32_t pm_gen_count; /* generation count (pmap lock dropped) */ 129 u_int pm_retries; 130 int pm_refs; /* ref count */ 131 struct pmap_statistics pm_stats; /* pmap statistics */ 132 133 /* Page table directory, array of pointers to page tables. */ 134 pte_t *pm_pdir[PDIR_NENTRIES]; 135 136 /* List of allocated ptbl bufs (ptbl kva regions). */ 137 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 138 }; 139 typedef struct pmap *pmap_t; 140 141 struct pv_entry { 142 pmap_t pv_pmap; 143 vm_offset_t pv_va; 144 TAILQ_ENTRY(pv_entry) pv_link; 145 }; 146 typedef struct pv_entry *pv_entry_t; 147 148 struct md_page { 149 TAILQ_HEAD(, pv_entry) pv_list; 150 }; 151 152 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 153 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 154 #define pmap_page_set_memattr(m, ma) (void)0 155 156 #endif /* AIM */ 157 158 extern struct pmap kernel_pmap_store; 159 #define kernel_pmap (&kernel_pmap_store) 160 161 #ifdef _KERNEL 162 163 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 164 #define PMAP_LOCK_ASSERT(pmap, type) \ 165 mtx_assert(&(pmap)->pm_mtx, (type)) 166 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 167 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 168 NULL, MTX_DEF) 169 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 170 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 171 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 172 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 173 174 void pmap_bootstrap(vm_offset_t, vm_offset_t); 175 void pmap_kenter(vm_offset_t va, vm_offset_t pa); 176 void pmap_kremove(vm_offset_t); 177 void *pmap_mapdev(vm_offset_t, vm_size_t); 178 void pmap_unmapdev(vm_offset_t, vm_size_t); 179 void pmap_deactivate(struct thread *); 180 vm_offset_t pmap_kextract(vm_offset_t); 181 int pmap_dev_direct_mapped(vm_offset_t, vm_size_t); 182 boolean_t pmap_mmu_install(char *name, int prio); 183 184 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 185 186 #define PHYS_AVAIL_SZ 128 187 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 188 extern vm_offset_t virtual_avail; 189 extern vm_offset_t virtual_end; 190 191 extern vm_offset_t msgbuf_phys; 192 193 extern int pmap_bootstrapped; 194 195 extern vm_offset_t pmap_dumpsys_map(struct pmap_md *, vm_size_t, vm_size_t *); 196 extern void pmap_dumpsys_unmap(struct pmap_md *, vm_size_t, vm_offset_t); 197 198 extern struct pmap_md *pmap_scan_md(struct pmap_md *); 199 200 #endif 201 202 #endif /* !_MACHINE_PMAP_H_ */ 203