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 slbtnode; 90 91 struct pmap { 92 struct mtx pm_mtx; 93 94 #ifdef __powerpc64__ 95 struct slbtnode *pm_slb_tree_root; 96 struct slb *pm_slb; 97 #else 98 register_t pm_sr[16]; 99 #endif 100 cpumask_t pm_active; 101 uint32_t pm_gen_count; /* generation count (pmap lock dropped) */ 102 u_int pm_retries; 103 104 struct pmap *pmap_phys; 105 struct pmap_statistics pm_stats; 106 }; 107 108 typedef struct pmap *pmap_t; 109 110 struct pvo_entry { 111 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 112 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 113 union { 114 struct pte pte; /* 32 bit PTE */ 115 struct lpte lpte; /* 64 bit PTE */ 116 } pvo_pte; 117 pmap_t pvo_pmap; /* Owning pmap */ 118 vm_offset_t pvo_vaddr; /* VA of entry */ 119 uint64_t pvo_vpn; /* Virtual page number */ 120 }; 121 LIST_HEAD(pvo_head, pvo_entry); 122 123 struct md_page { 124 u_int64_t mdpg_attrs; 125 struct pvo_head mdpg_pvoh; 126 }; 127 128 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 129 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 130 #define pmap_page_set_memattr(m, ma) (void)0 131 132 /* 133 * Return the VSID corresponding to a given virtual address. 134 * If no VSID is currently defined, it will allocate one, and add 135 * it to a free slot if available. 136 * 137 * NB: The PMAP MUST be locked already. 138 */ 139 uint64_t va_to_vsid(pmap_t pm, vm_offset_t va); 140 141 /* Lock-free, non-allocating lookup routines */ 142 uint64_t kernel_va_to_slbv(vm_offset_t va); 143 struct slb *user_va_to_slb_entry(pmap_t pm, vm_offset_t va); 144 145 uint64_t allocate_vsid(pmap_t pm, uint64_t esid, int large); 146 void free_vsid(pmap_t pm, uint64_t esid, int large); 147 void slb_insert(pmap_t pm, struct slb *dst, struct slb *); 148 149 struct slbtnode *slb_alloc_tree(void); 150 void slb_free_tree(pmap_t pm); 151 struct slb *slb_alloc_user_cache(void); 152 void slb_free_user_cache(struct slb *); 153 154 #else 155 156 struct pmap { 157 struct mtx pm_mtx; /* pmap mutex */ 158 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 159 cpumask_t pm_active; /* active on cpus */ 160 int pm_refs; /* ref count */ 161 struct pmap_statistics pm_stats; /* pmap statistics */ 162 163 /* Page table directory, array of pointers to page tables. */ 164 pte_t *pm_pdir[PDIR_NENTRIES]; 165 166 /* generation count (pmap lock dropped) */ 167 uint32_t pm_gen_count; 168 u_int pm_retries; 169 170 /* List of allocated ptbl bufs (ptbl kva regions). */ 171 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 172 }; 173 typedef struct pmap *pmap_t; 174 175 struct pv_entry { 176 pmap_t pv_pmap; 177 vm_offset_t pv_va; 178 TAILQ_ENTRY(pv_entry) pv_link; 179 }; 180 typedef struct pv_entry *pv_entry_t; 181 182 struct md_page { 183 TAILQ_HEAD(, pv_entry) pv_list; 184 }; 185 186 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 187 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 188 #define pmap_page_set_memattr(m, ma) (void)0 189 190 #endif /* AIM */ 191 192 extern struct pmap kernel_pmap_store; 193 #define kernel_pmap (&kernel_pmap_store) 194 195 #ifdef _KERNEL 196 197 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 198 #define PMAP_LOCK_ASSERT(pmap, type) \ 199 mtx_assert(&(pmap)->pm_mtx, (type)) 200 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 201 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 202 NULL, MTX_DEF) 203 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 204 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 205 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 206 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 207 208 void pmap_bootstrap(vm_offset_t, vm_offset_t); 209 void pmap_kenter(vm_offset_t va, vm_offset_t pa); 210 void pmap_kremove(vm_offset_t); 211 void *pmap_mapdev(vm_offset_t, vm_size_t); 212 void pmap_unmapdev(vm_offset_t, vm_size_t); 213 void pmap_deactivate(struct thread *); 214 vm_offset_t pmap_kextract(vm_offset_t); 215 int pmap_dev_direct_mapped(vm_offset_t, vm_size_t); 216 boolean_t pmap_mmu_install(char *name, int prio); 217 218 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 219 220 #define PHYS_AVAIL_SZ 128 221 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 222 extern vm_offset_t virtual_avail; 223 extern vm_offset_t virtual_end; 224 225 extern vm_offset_t msgbuf_phys; 226 227 extern int pmap_bootstrapped; 228 229 extern vm_offset_t pmap_dumpsys_map(struct pmap_md *, vm_size_t, vm_size_t *); 230 extern void pmap_dumpsys_unmap(struct pmap_md *, vm_size_t, vm_offset_t); 231 232 extern struct pmap_md *pmap_scan_md(struct pmap_md *); 233 234 #endif 235 236 #endif /* !_MACHINE_PMAP_H_ */ 237