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 #ifndef __powerpc64__ 90 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 91 #endif 92 RB_ENTRY(pvo_entry) pvo_plink; /* Link to pmap entries */ 93 struct { 94 #ifndef __powerpc64__ 95 /* 32-bit fields */ 96 struct pte pte; 97 #endif 98 /* 64-bit fields */ 99 uintptr_t slot; 100 vm_paddr_t pa; 101 vm_prot_t prot; 102 } pvo_pte; 103 pmap_t pvo_pmap; /* Owning pmap */ 104 vm_offset_t pvo_vaddr; /* VA of entry */ 105 uint64_t pvo_vpn; /* Virtual page number */ 106 }; 107 LIST_HEAD(pvo_head, pvo_entry); 108 RB_HEAD(pvo_tree, pvo_entry); 109 int pvo_vaddr_compare(struct pvo_entry *, struct pvo_entry *); 110 RB_PROTOTYPE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare); 111 112 /* Used by 32-bit PMAP */ 113 #define PVO_PTEGIDX_MASK 0x007UL /* which PTEG slot */ 114 #define PVO_PTEGIDX_VALID 0x008UL /* slot is valid */ 115 /* Used by 64-bit PMAP */ 116 #define PVO_HID 0x008UL /* PVO entry in alternate hash*/ 117 /* Used by both */ 118 #define PVO_WIRED 0x010UL /* PVO entry is wired */ 119 #define PVO_MANAGED 0x020UL /* PVO entry is managed */ 120 #define PVO_BOOTSTRAP 0x080UL /* PVO entry allocated during 121 bootstrap */ 122 #define PVO_DEAD 0x100UL /* waiting to be deleted */ 123 #define PVO_LARGE 0x200UL /* large page */ 124 #define PVO_VADDR(pvo) ((pvo)->pvo_vaddr & ~ADDR_POFF) 125 #define PVO_PTEGIDX_GET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_MASK) 126 #define PVO_PTEGIDX_ISSET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_VALID) 127 #define PVO_PTEGIDX_CLR(pvo) \ 128 ((void)((pvo)->pvo_vaddr &= ~(PVO_PTEGIDX_VALID|PVO_PTEGIDX_MASK))) 129 #define PVO_PTEGIDX_SET(pvo, i) \ 130 ((void)((pvo)->pvo_vaddr |= (i)|PVO_PTEGIDX_VALID)) 131 #define PVO_VSID(pvo) ((pvo)->pvo_vpn >> 16) 132 133 struct pmap { 134 struct mtx pm_mtx; 135 136 #ifdef __powerpc64__ 137 struct slbtnode *pm_slb_tree_root; 138 struct slb **pm_slb; 139 int pm_slb_len; 140 #else 141 register_t pm_sr[16]; 142 #endif 143 cpuset_t pm_active; 144 145 struct pmap *pmap_phys; 146 struct pmap_statistics pm_stats; 147 struct pvo_tree pmap_pvo; 148 }; 149 150 struct md_page { 151 volatile int32_t mdpg_attrs; 152 vm_memattr_t mdpg_cache_attrs; 153 struct pvo_head mdpg_pvoh; 154 }; 155 156 #define pmap_page_get_memattr(m) ((m)->md.mdpg_cache_attrs) 157 #define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 158 159 /* 160 * Return the VSID corresponding to a given virtual address. 161 * If no VSID is currently defined, it will allocate one, and add 162 * it to a free slot if available. 163 * 164 * NB: The PMAP MUST be locked already. 165 */ 166 uint64_t va_to_vsid(pmap_t pm, vm_offset_t va); 167 168 /* Lock-free, non-allocating lookup routines */ 169 uint64_t kernel_va_to_slbv(vm_offset_t va); 170 struct slb *user_va_to_slb_entry(pmap_t pm, vm_offset_t va); 171 172 uint64_t allocate_user_vsid(pmap_t pm, uint64_t esid, int large); 173 void free_vsid(pmap_t pm, uint64_t esid, int large); 174 void slb_insert_user(pmap_t pm, struct slb *slb); 175 void slb_insert_kernel(uint64_t slbe, uint64_t slbv); 176 177 struct slbtnode *slb_alloc_tree(void); 178 void slb_free_tree(pmap_t pm); 179 struct slb **slb_alloc_user_cache(void); 180 void slb_free_user_cache(struct slb **); 181 182 #else 183 184 struct pmap { 185 struct mtx pm_mtx; /* pmap mutex */ 186 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 187 cpuset_t pm_active; /* active on cpus */ 188 struct pmap_statistics pm_stats; /* pmap statistics */ 189 190 /* Page table directory, array of pointers to page tables. */ 191 pte_t *pm_pdir[PDIR_NENTRIES]; 192 193 /* List of allocated ptbl bufs (ptbl kva regions). */ 194 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 195 }; 196 typedef struct pmap *pmap_t; 197 198 struct pv_entry { 199 pmap_t pv_pmap; 200 vm_offset_t pv_va; 201 TAILQ_ENTRY(pv_entry) pv_link; 202 }; 203 typedef struct pv_entry *pv_entry_t; 204 205 struct md_page { 206 TAILQ_HEAD(, pv_entry) pv_list; 207 }; 208 209 #define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 210 #define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 211 212 #endif /* AIM */ 213 214 extern struct pmap kernel_pmap_store; 215 #define kernel_pmap (&kernel_pmap_store) 216 217 #ifdef _KERNEL 218 219 #define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 220 #define PMAP_LOCK_ASSERT(pmap, type) \ 221 mtx_assert(&(pmap)->pm_mtx, (type)) 222 #define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 223 #define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, \ 224 (pmap == kernel_pmap) ? "kernelpmap" : \ 225 "pmap", NULL, MTX_DEF) 226 #define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 227 #define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 228 #define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 229 #define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 230 231 #define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) 232 233 void pmap_bootstrap(vm_offset_t, vm_offset_t); 234 void pmap_kenter(vm_offset_t va, vm_paddr_t pa); 235 void pmap_kenter_attr(vm_offset_t va, vm_offset_t pa, vm_memattr_t); 236 void pmap_kremove(vm_offset_t); 237 void *pmap_mapdev(vm_paddr_t, vm_size_t); 238 void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, vm_memattr_t); 239 void pmap_unmapdev(vm_offset_t, vm_size_t); 240 void pmap_page_set_memattr(vm_page_t, vm_memattr_t); 241 int pmap_change_attr(vm_offset_t, vm_size_t, vm_memattr_t); 242 void pmap_deactivate(struct thread *); 243 vm_paddr_t pmap_kextract(vm_offset_t); 244 int pmap_dev_direct_mapped(vm_paddr_t, vm_size_t); 245 boolean_t pmap_mmu_install(char *name, int prio); 246 247 #define vtophys(va) pmap_kextract((vm_offset_t)(va)) 248 249 #define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with 250 * logical memory block size of 64MB. 251 * For more Ram increase the lmb or this value. 252 */ 253 254 extern vm_paddr_t phys_avail[PHYS_AVAIL_SZ]; 255 extern vm_offset_t virtual_avail; 256 extern vm_offset_t virtual_end; 257 258 extern vm_offset_t msgbuf_phys; 259 260 extern int pmap_bootstrapped; 261 262 vm_offset_t pmap_early_io_map(vm_paddr_t pa, vm_size_t size); 263 264 #endif 265 266 #endif /* !_MACHINE_PMAP_H_ */ 267