1/*- 2 * SPDX-License-Identifier: BSD-3-Clause AND BSD-4-Clause 3 * 4 * Copyright (C) 2006 Semihalf, Marian Balakowicz <m8@semihalf.com> 5 * All rights reserved. 6 * 7 * Adapted for Freescale's e500 core CPUs. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 25 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33/*- 34 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 35 * Copyright (C) 1995, 1996 TooLs GmbH. 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by TooLs GmbH. 49 * 4. The name of TooLs GmbH may not be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 53 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 54 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 55 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 * 63 * from: $NetBSD: pmap.h,v 1.17 2000/03/30 16:18:24 jdolecek Exp $ 64 */ 65 66#ifndef _MACHINE_PMAP_H_ 67#define _MACHINE_PMAP_H_ 68 69#include <sys/queue.h> 70#include <sys/tree.h> 71#include <sys/_cpuset.h> 72#include <sys/_lock.h> 73#include <sys/_mutex.h> 74#include <machine/sr.h> 75#include <machine/pte.h> 76#include <machine/slb.h> 77#include <machine/tlb.h> 78 79struct pmap; 80typedef struct pmap *pmap_t; 81 82#if defined(AIM) 83 84#if !defined(NPMAPS) 85#define NPMAPS 32768 86#endif /* !defined(NPMAPS) */ 87 88struct slbtnode; 89 90struct pvo_entry { 91 LIST_ENTRY(pvo_entry) pvo_vlink; /* Link to common virt page */ 92#ifndef __powerpc64__ 93 LIST_ENTRY(pvo_entry) pvo_olink; /* Link to overflow entry */ 94#endif 95 RB_ENTRY(pvo_entry) pvo_plink; /* Link to pmap entries */ 96 struct { 97#ifndef __powerpc64__ 98 /* 32-bit fields */ 99 struct pte pte; 100#endif 101 /* 64-bit fields */ 102 uintptr_t slot; 103 vm_paddr_t pa; 104 vm_prot_t prot; 105 } pvo_pte; 106 pmap_t pvo_pmap; /* Owning pmap */ 107 vm_offset_t pvo_vaddr; /* VA of entry */ 108 uint64_t pvo_vpn; /* Virtual page number */ 109}; 110LIST_HEAD(pvo_head, pvo_entry); 111RB_HEAD(pvo_tree, pvo_entry); 112int pvo_vaddr_compare(struct pvo_entry *, struct pvo_entry *); 113RB_PROTOTYPE(pvo_tree, pvo_entry, pvo_plink, pvo_vaddr_compare); 114 115/* Used by 32-bit PMAP */ 116#define PVO_PTEGIDX_MASK 0x007UL /* which PTEG slot */ 117#define PVO_PTEGIDX_VALID 0x008UL /* slot is valid */ 118/* Used by 64-bit PMAP */ 119#define PVO_HID 0x008UL /* PVO entry in alternate hash*/ 120/* Used by both */ 121#define PVO_WIRED 0x010UL /* PVO entry is wired */ 122#define PVO_MANAGED 0x020UL /* PVO entry is managed */ 123#define PVO_BOOTSTRAP 0x080UL /* PVO entry allocated during 124 bootstrap */ 125#define PVO_DEAD 0x100UL /* waiting to be deleted */ 126#define PVO_LARGE 0x200UL /* large page */ 127#define PVO_VADDR(pvo) ((pvo)->pvo_vaddr & ~ADDR_POFF) 128#define PVO_PTEGIDX_GET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_MASK) 129#define PVO_PTEGIDX_ISSET(pvo) ((pvo)->pvo_vaddr & PVO_PTEGIDX_VALID) 130#define PVO_PTEGIDX_CLR(pvo) \ 131 ((void)((pvo)->pvo_vaddr &= ~(PVO_PTEGIDX_VALID|PVO_PTEGIDX_MASK))) 132#define PVO_PTEGIDX_SET(pvo, i) \ 133 ((void)((pvo)->pvo_vaddr |= (i)|PVO_PTEGIDX_VALID)) 134#define PVO_VSID(pvo) ((pvo)->pvo_vpn >> 16) 135 136struct pmap { 137 struct pmap_statistics pm_stats; 138 struct mtx pm_mtx; 139 140 #ifdef __powerpc64__ 141 struct slbtnode *pm_slb_tree_root; 142 struct slb **pm_slb; 143 int pm_slb_len; 144 #else 145 register_t pm_sr[16]; 146 #endif 147 cpuset_t pm_active; 148 149 struct pmap *pmap_phys; 150 struct pvo_tree pmap_pvo; 151}; 152 153struct md_page { 154 volatile int32_t mdpg_attrs; 155 vm_memattr_t mdpg_cache_attrs; 156 struct pvo_head mdpg_pvoh; 157}; 158 159#define pmap_page_get_memattr(m) ((m)->md.mdpg_cache_attrs) 160#define pmap_page_is_mapped(m) (!LIST_EMPTY(&(m)->md.mdpg_pvoh)) 161 162/* 163 * Return the VSID corresponding to a given virtual address. 164 * If no VSID is currently defined, it will allocate one, and add 165 * it to a free slot if available. 166 * 167 * NB: The PMAP MUST be locked already. 168 */ 169uint64_t va_to_vsid(pmap_t pm, vm_offset_t va); 170 171/* Lock-free, non-allocating lookup routines */ 172uint64_t kernel_va_to_slbv(vm_offset_t va); 173struct slb *user_va_to_slb_entry(pmap_t pm, vm_offset_t va); 174 175uint64_t allocate_user_vsid(pmap_t pm, uint64_t esid, int large); 176void free_vsid(pmap_t pm, uint64_t esid, int large); 177void slb_insert_user(pmap_t pm, struct slb *slb); 178void slb_insert_kernel(uint64_t slbe, uint64_t slbv); 179 180struct slbtnode *slb_alloc_tree(void); 181void slb_free_tree(pmap_t pm); 182struct slb **slb_alloc_user_cache(void); 183void slb_free_user_cache(struct slb **); 184 185#elif defined(BOOKE) 186 187struct pmap { 188 struct pmap_statistics pm_stats; /* pmap statistics */ 189 struct mtx pm_mtx; /* pmap mutex */ 190 tlbtid_t pm_tid[MAXCPU]; /* TID to identify this pmap entries in TLB */ 191 cpuset_t pm_active; /* active on cpus */ 192 193#ifdef __powerpc64__ 194 /* Page table directory, array of pointers to page directories. */ 195 pte_t **pm_pp2d[PP2D_NENTRIES]; 196 197 /* List of allocated pdir bufs (pdir kva regions). */ 198 TAILQ_HEAD(, ptbl_buf) pm_pdir_list; 199#else 200 /* Page table directory, array of pointers to page tables. */ 201 pte_t *pm_pdir[PDIR_NENTRIES]; 202#endif 203 204 /* List of allocated ptbl bufs (ptbl kva regions). */ 205 TAILQ_HEAD(, ptbl_buf) pm_ptbl_list; 206}; 207 208struct pv_entry { 209 pmap_t pv_pmap; 210 vm_offset_t pv_va; 211 TAILQ_ENTRY(pv_entry) pv_link; 212}; 213typedef struct pv_entry *pv_entry_t; 214 215struct md_page { 216 TAILQ_HEAD(, pv_entry) pv_list; 217 int pv_tracked; 218}; 219 220#define pmap_page_get_memattr(m) VM_MEMATTR_DEFAULT 221#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 222 223#else 224/* 225 * Common pmap members between AIM and BOOKE. 226 * libkvm needs pm_stats at the same location between both, as it doesn't define 227 * AIM nor BOOKE, and is expected to work across all. 228 */ 229struct pmap { 230 struct pmap_statistics pm_stats; /* pmap statistics */ 231 struct mtx pm_mtx; /* pmap mutex */ 232}; 233#endif /* AIM */ 234 235extern struct pmap kernel_pmap_store; 236#define kernel_pmap (&kernel_pmap_store) 237 238#ifdef _KERNEL 239 240#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 241#define PMAP_LOCK_ASSERT(pmap, type) \ 242 mtx_assert(&(pmap)->pm_mtx, (type)) 243#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 244#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, \ 245 (pmap == kernel_pmap) ? "kernelpmap" : \ 246 "pmap", NULL, MTX_DEF) 247#define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 248#define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 249#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 250#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 251 252#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) 253 254void pmap_bootstrap(vm_offset_t, vm_offset_t); 255void pmap_kenter(vm_offset_t va, vm_paddr_t pa); 256void pmap_kenter_attr(vm_offset_t va, vm_paddr_t pa, vm_memattr_t); 257void pmap_kremove(vm_offset_t); 258void *pmap_mapdev(vm_paddr_t, vm_size_t); 259void *pmap_mapdev_attr(vm_paddr_t, vm_size_t, vm_memattr_t); 260void pmap_unmapdev(vm_offset_t, vm_size_t); 261void pmap_page_set_memattr(vm_page_t, vm_memattr_t); 262int pmap_change_attr(vm_offset_t, vm_size_t, vm_memattr_t); 263int pmap_map_user_ptr(pmap_t pm, volatile const void *uaddr, 264 void **kaddr, size_t ulen, size_t *klen); 265int pmap_decode_kernel_ptr(vm_offset_t addr, int *is_user, 266 vm_offset_t *decoded_addr); 267void pmap_deactivate(struct thread *); 268vm_paddr_t pmap_kextract(vm_offset_t); 269int pmap_dev_direct_mapped(vm_paddr_t, vm_size_t); 270boolean_t pmap_mmu_install(char *name, int prio); 271 272#define vtophys(va) pmap_kextract((vm_offset_t)(va)) 273 274#define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with 275 * logical memory block size of 64MB. 276 * For more Ram increase the lmb or this value. 277 */ 278 279extern vm_paddr_t phys_avail[PHYS_AVAIL_SZ]; 280extern vm_offset_t virtual_avail; 281extern vm_offset_t virtual_end; 282 283extern vm_offset_t msgbuf_phys; 284 285extern int pmap_bootstrapped; 286 287vm_offset_t pmap_early_io_map(vm_paddr_t pa, vm_size_t size); 288void pmap_early_io_unmap(vm_offset_t va, vm_size_t size); 289void pmap_track_page(pmap_t pmap, vm_offset_t va); 290 291static inline int 292pmap_vmspace_copy(pmap_t dst_pmap __unused, pmap_t src_pmap __unused) 293{ 294 295 return (0); 296} 297 298#endif 299 300#endif /* !_MACHINE_PMAP_H_ */ 301