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/_cpuset.h> 70 #include <sys/_lock.h> 71 #include <sys/_mutex.h> 72 #include <machine/sr.h> 73 #include <machine/pte.h> 74 #include <machine/slb.h> 75 #include <machine/tlb.h> 76 77 #if defined(AIM) 78 79 #if !defined(NPMAPS) 80 #define NPMAPS 32768 81 #endif /* !defined(NPMAPS) */ 82 83 struct slbtnode; 84 struct pmap; 85 typedef struct pmap *pmap_t; 86 87 struct pvo_entry { 88 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 89 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 90 RB_ENTRY(pvo_entry) pvo_plink; /* Link to pmap entries */ 91 union { 92 struct pte pte; /* 32 bit PTE */ 93 struct lpte lpte; /* 64 bit PTE */ 94 } pvo_pte; 95 pmap_t pvo_pmap; /* Owning pmap */ 96 vm_offset_t pvo_vaddr; /* VA of entry */ 97 uint64_t pvo_vpn; /* Virtual page number */ 98 }; 99 LIST_HEAD(pvo_head, pvo_entry); 100 RB_HEAD(pvo_tree, pvo_entry); 101 int pvo_vaddr_compare(struct pvo_entry *, struct pvo_entry *); 102 RB_PROTOTYPE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare); 103 104 #define PVO_PTEGIDX_MASK 0x007UL /* which PTEG slot */ 105 #define PVO_PTEGIDX_VALID 0x008UL /* slot is valid */ 106 #define PVO_WIRED 0x010UL /* PVO entry is wired */ 107 #define PVO_MANAGED 0x020UL /* PVO entry is managed */ 108 #define PVO_BOOTSTRAP 0x080UL /* PVO entry allocated during 109 bootstrap */ 110 #define PVO_LARGE 0x200UL /* large page */ 111 #define PVO_VADDR(pvo) ((pvo)->pvo_vaddr & ~ADDR_POFF) 112 #define PVO_PTEGIDX_GET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_MASK) 113 #define PVO_PTEGIDX_ISSET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_VALID) 114 #define PVO_PTEGIDX_CLR(pvo) \ 115 ((void)((pvo)->pvo_vaddr &= ~(PVO_PTEGIDX_VALID|PVO_PTEGIDX_MASK))) 116 #define PVO_PTEGIDX_SET(pvo, i) \ 117 ((void)((pvo)->pvo_vaddr |= (i)|PVO_PTEGIDX_VALID)) 118 #define PVO_VSID(pvo) ((pvo)->pvo_vpn >> 16) 119 120 struct pmap { 121 struct mtx pm_mtx; 122 123 #ifdef __powerpc64__ 124 struct slbtnode *pm_slb_tree_root; 125 struct slb **pm_slb; 126 int pm_slb_len; 127 #else 128 register_t pm_sr[16]; 129 #endif 130 cpuset_t pm_active; 131 132 struct pmap *pmap_phys; 133 struct pmap_statistics pm_stats; 134 struct pvo_tree pmap_pvo; 135 }; 136 137 struct md_page { 138 u_int64_t mdpg_attrs; 139 vm_memattr_t mdpg_cache_attrs; 140 struct pvo_head mdpg_pvoh; 141 }; 142 143 #define pmap_page_get_memattr(m) ((m)->md.mdpg_cache_attrs) 144 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 145 146 /* 147 * Return the VSID corresponding to a given virtual address. 148 * If no VSID is currently defined, it will allocate one, and add 149 * it to a free slot if available. 150 * 151 * NB: The PMAP MUST be locked already. 152 */ 153 uint64_t va_to_vsid(pmap_t pm, vm_offset_t va); 154 155 /* Lock-free, non-allocating lookup routines */ 156 uint64_t kernel_va_to_slbv(vm_offset_t va); 157 struct slb *user_va_to_slb_entry(pmap_t pm, vm_offset_t va); 158 159 uint64_t allocate_user_vsid(pmap_t pm, uint64_t esid, int large); 160 void free_vsid(pmap_t pm, uint64_t esid, int large); 161 void slb_insert_user(pmap_t pm, struct slb *slb); 162 void slb_insert_kernel(uint64_t slbe, uint64_t slbv); 163 164 struct slbtnode *slb_alloc_tree(void); 165 void slb_free_tree(pmap_t pm); 166 struct slb **slb_alloc_user_cache(void); 167 void slb_free_user_cache(struct slb **); 168 169 #else 170 171 struct pmap { 172 struct mtx pm_mtx; /* pmap mutex */ 173 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 174 cpuset_t pm_active; /* active on cpus */ 175 struct pmap_statistics pm_stats; /* pmap statistics */ 176 177 /* Page table directory, array of pointers to page tables. */ 178 pte_t *pm_pdir[PDIR_NENTRIES]; 179 180 /* List of allocated ptbl bufs (ptbl kva regions). */ 181 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 182 }; 183 typedef struct pmap *pmap_t; 184 185 struct pv_entry { 186 pmap_t pv_pmap; 187 vm_offset_t pv_va; 188 TAILQ_ENTRY(pv_entry) pv_link; 189 }; 190 typedef struct pv_entry *pv_entry_t; 191 192 struct md_page { 193 TAILQ_HEAD(, pv_entry) pv_list; 194 }; 195 196 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 197 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 198 199 #endif /* AIM */ 200 201 extern struct pmap kernel_pmap_store; 202 #define kernel_pmap (&kernel_pmap_store) 203 204 #ifdef _KERNEL 205 206 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 207 #define PMAP_LOCK_ASSERT(pmap, type) \ 208 mtx_assert(&(pmap)->pm_mtx, (type)) 209 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 210 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, \ 211 (pmap == kernel_pmap) ? "kernelpmap" : \ 212 "pmap", NULL, MTX_DEF) 213 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 214 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 215 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 216 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 217 218 #define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) 219 220 void pmap_bootstrap(vm_offset_t, vm_offset_t); 221 void pmap_kenter(vm_offset_t va, vm_paddr_t pa); 222 void pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t); 223 void pmap_kremove(vm_offset_t); 224 void *pmap_mapdev(vm_paddr_t, vm_size_t); 225 void *pmap_mapdev_attr(vm_offset_t, vm_size_t, vm_memattr_t); 226 void pmap_unmapdev(vm_offset_t, vm_size_t); 227 void pmap_page_set_memattr(vm_page_t, vm_memattr_t); 228 void pmap_deactivate(struct thread *); 229 vm_paddr_t pmap_kextract(vm_offset_t); 230 int pmap_dev_direct_mapped(vm_paddr_t, vm_size_t); 231 boolean_t pmap_mmu_install(char *name, int prio); 232 233 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 234 235 #define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with 236 * logical memory block size of 64MB. 237 * For more Ram increase the lmb or this value. 238 */ 239 240 extern vm_offset_t phys_avail[PHYS_AVAIL_SZ]; 241 extern vm_offset_t virtual_avail; 242 extern vm_offset_t virtual_end; 243 244 extern vm_offset_t msgbuf_phys; 245 246 extern int pmap_bootstrapped; 247 248 vm_offset_t pmap_early_io_map(vm_paddr_t pa, vm_size_t size); 249 250 #endif 251 252 #endif /* !_MACHINE_PMAP_H_ */ 253