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/tree.h> 69 #include <sys/_lock.h> 70 #include <sys/_mutex.h> 71 #include <machine/sr.h> 72 #include <machine/pte.h> 73 #include <machine/slb.h> 74 #include <machine/tlb.h> 75 76 struct pmap_md { 77 u_int md_index; 78 vm_paddr_t md_paddr; 79 vm_offset_t md_vaddr; 80 vm_size_t md_size; 81 }; 82 83 #if defined(AIM) 84 85 #if !defined(NPMAPS) 86 #define NPMAPS 32768 87 #endif /* !defined(NPMAPS) */ 88 89 struct slbcontainer; 90 91 SPLAY_HEAD(slb_tree, slbcontainer); 92 93 struct pmap { 94 struct mtx pm_mtx; 95 96 #ifdef __powerpc64__ 97 struct slb_tree pm_slbtree; 98 struct slb *pm_slb; 99 #else 100 register_t pm_sr[16]; 101 #endif 102 u_int pm_active; 103 uint32_t pm_gen_count; /* generation count (pmap lock dropped) */ 104 u_int pm_retries; 105 106 struct pmap *pmap_phys; 107 struct pmap_statistics pm_stats; 108 }; 109 110 typedef struct pmap *pmap_t; 111 112 struct pvo_entry { 113 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 114 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 115 union { 116 struct pte pte; /* 32 bit PTE */ 117 struct lpte lpte; /* 64 bit PTE */ 118 } pvo_pte; 119 pmap_t pvo_pmap; /* Owning pmap */ 120 vm_offset_t pvo_vaddr; /* VA of entry */ 121 uint64_t pvo_vpn; /* Virtual page number */ 122 }; 123 LIST_HEAD(pvo_head, pvo_entry); 124 125 struct md_page { 126 u_int64_t mdpg_attrs; 127 struct pvo_head mdpg_pvoh; 128 }; 129 130 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 131 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 132 #define pmap_page_set_memattr(m, ma) (void)0 133 134 /* 135 * Return the VSID corresponding to a given virtual address. 136 * If no VSID is currently defined, it will allocate one, and add 137 * it to a free slot if available. 138 * 139 * NB: The PMAP MUST be locked already. 140 */ 141 uint64_t va_to_vsid(pmap_t pm, vm_offset_t va); 142 int va_to_slb_entry(pmap_t pm, vm_offset_t va, struct slb *); 143 144 uint64_t allocate_vsid(pmap_t pm, uint64_t esid, int large); 145 void slb_insert(pmap_t pm, struct slb *dst, struct slb *); 146 int vsid_to_esid(pmap_t pm, uint64_t vsid, uint64_t *esid); 147 void free_vsids(pmap_t pm); 148 struct slb *slb_alloc_user_cache(void); 149 void slb_free_user_cache(struct slb *); 150 151 #else 152 153 struct pmap { 154 struct mtx pm_mtx; /* pmap mutex */ 155 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 156 u_int pm_active; /* active on cpus */ 157 int pm_refs; /* ref count */ 158 struct pmap_statistics pm_stats; /* pmap statistics */ 159 160 /* Page table directory, array of pointers to page tables. */ 161 pte_t *pm_pdir[PDIR_NENTRIES]; 162 163 /* generation count (pmap lock dropped) */ 164 uint32_t pm_gen_count; 165 u_int pm_retries; 166 167 /* List of allocated ptbl bufs (ptbl kva regions). */ 168 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 169 }; 170 typedef struct pmap *pmap_t; 171 172 struct pv_entry { 173 pmap_t pv_pmap; 174 vm_offset_t pv_va; 175 TAILQ_ENTRY(pv_entry) pv_link; 176 }; 177 typedef struct pv_entry *pv_entry_t; 178 179 struct md_page { 180 TAILQ_HEAD(, pv_entry) pv_list; 181 }; 182 183 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 184 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 185 #define pmap_page_set_memattr(m, ma) (void)0 186 187 #endif /* AIM */ 188 189 extern struct pmap kernel_pmap_store; 190 #define kernel_pmap (&kernel_pmap_store) 191 192 #ifdef _KERNEL 193 194 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 195 #define PMAP_LOCK_ASSERT(pmap, type) \ 196 mtx_assert(&(pmap)->pm_mtx, (type)) 197 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 198 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 199 NULL, MTX_DEF) 200 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 201 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 202 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 203 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 204 205 void pmap_bootstrap(vm_offset_t, vm_offset_t); 206 void pmap_kenter(vm_offset_t va, vm_offset_t pa); 207 void pmap_kremove(vm_offset_t); 208 void *pmap_mapdev(vm_offset_t, vm_size_t); 209 void pmap_unmapdev(vm_offset_t, vm_size_t); 210 void pmap_deactivate(struct thread *); 211 vm_offset_t pmap_kextract(vm_offset_t); 212 int pmap_dev_direct_mapped(vm_offset_t, vm_size_t); 213 boolean_t pmap_mmu_install(char *name, int prio); 214 215 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 216 217 #define PHYS_AVAIL_SZ 128 218 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 219 extern vm_offset_t virtual_avail; 220 extern vm_offset_t virtual_end; 221 222 extern vm_offset_t msgbuf_phys; 223 224 extern int pmap_bootstrapped; 225 226 extern vm_offset_t pmap_dumpsys_map(struct pmap_md *, vm_size_t, vm_size_t *); 227 extern void pmap_dumpsys_unmap(struct pmap_md *, vm_size_t, vm_offset_t); 228 229 extern struct pmap_md *pmap_scan_md(struct pmap_md *); 230 231 #endif 232 233 #endif /* !_MACHINE_PMAP_H_ */ 234