1292407Sbr/*- 2292407Sbr * Copyright (c) 1991 Regents of the University of California. 3292407Sbr * All rights reserved. 4292407Sbr * 5292407Sbr * This code is derived from software contributed to Berkeley by 6292407Sbr * the Systems Programming Group of the University of Utah Computer 7292407Sbr * Science Department and William Jolitz of UUNET Technologies Inc. 8292407Sbr * 9292407Sbr * Redistribution and use in source and binary forms, with or without 10292407Sbr * modification, are permitted provided that the following conditions 11292407Sbr * are met: 12292407Sbr * 1. Redistributions of source code must retain the above copyright 13292407Sbr * notice, this list of conditions and the following disclaimer. 14292407Sbr * 2. Redistributions in binary form must reproduce the above copyright 15292407Sbr * notice, this list of conditions and the following disclaimer in the 16292407Sbr * documentation and/or other materials provided with the distribution. 17292407Sbr * 3. Neither the name of the University nor the names of its contributors 18292407Sbr * may be used to endorse or promote products derived from this software 19292407Sbr * without specific prior written permission. 20292407Sbr * 21292407Sbr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22292407Sbr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23292407Sbr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24292407Sbr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25292407Sbr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26292407Sbr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27292407Sbr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28292407Sbr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29292407Sbr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30292407Sbr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31292407Sbr * SUCH DAMAGE. 32292407Sbr * 33292407Sbr * $FreeBSD$ 34292407Sbr */ 35292407Sbr 36292407Sbr#ifndef _MACHINE_PMAP_H_ 37292407Sbr#define _MACHINE_PMAP_H_ 38292407Sbr 39292407Sbr#include <machine/pte.h> 40292407Sbr 41292407Sbr#ifndef LOCORE 42292407Sbr 43292407Sbr#include <sys/queue.h> 44292407Sbr#include <sys/_lock.h> 45292407Sbr#include <sys/_mutex.h> 46292407Sbr 47292407Sbr#ifdef _KERNEL 48292407Sbr 49292407Sbr#define vtophys(va) pmap_kextract((vm_offset_t)(va)) 50292407Sbr 51292407Sbr#endif 52292407Sbr 53292407Sbr#define pmap_page_get_memattr(m) ((m)->md.pv_memattr) 54292407Sbr#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) 55292407Sbrvoid pmap_page_set_memattr(vm_page_t m, vm_memattr_t ma); 56292407Sbr 57292407Sbr/* 58292407Sbr * Pmap stuff 59292407Sbr */ 60292407Sbr 61292407Sbrstruct md_page { 62292407Sbr TAILQ_HEAD(,pv_entry) pv_list; 63292407Sbr int pv_gen; 64292407Sbr vm_memattr_t pv_memattr; 65292407Sbr}; 66292407Sbr 67292407Sbr/* 68292407Sbr * This structure is used to hold a virtual<->physical address 69292407Sbr * association and is used mostly by bootstrap code 70292407Sbr */ 71292407Sbrstruct pv_addr { 72292407Sbr SLIST_ENTRY(pv_addr) pv_list; 73292407Sbr vm_offset_t pv_va; 74292407Sbr vm_paddr_t pv_pa; 75292407Sbr}; 76292407Sbr 77292407Sbrstruct pmap { 78292407Sbr struct mtx pm_mtx; 79292407Sbr struct pmap_statistics pm_stats; /* pmap statictics */ 80292407Sbr pd_entry_t *pm_l1; 81292407Sbr TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */ 82298641Sbr LIST_ENTRY(pmap) pm_list; /* List of all pmaps */ 83292407Sbr}; 84292407Sbr 85292407Sbrtypedef struct pv_entry { 86292407Sbr vm_offset_t pv_va; /* virtual address for mapping */ 87292407Sbr TAILQ_ENTRY(pv_entry) pv_next; 88292407Sbr} *pv_entry_t; 89292407Sbr 90292407Sbr/* 91292407Sbr * pv_entries are allocated in chunks per-process. This avoids the 92292407Sbr * need to track per-pmap assignments. 93292407Sbr */ 94292407Sbr#define _NPCM 3 95292407Sbr#define _NPCPV 168 96292407Sbrstruct pv_chunk { 97292407Sbr struct pmap * pc_pmap; 98292407Sbr TAILQ_ENTRY(pv_chunk) pc_list; 99292407Sbr uint64_t pc_map[_NPCM]; /* bitmap; 1 = free */ 100292407Sbr TAILQ_ENTRY(pv_chunk) pc_lru; 101292407Sbr struct pv_entry pc_pventry[_NPCPV]; 102292407Sbr}; 103292407Sbr 104292407Sbrtypedef struct pmap *pmap_t; 105292407Sbr 106292407Sbr#ifdef _KERNEL 107292407Sbrextern struct pmap kernel_pmap_store; 108292407Sbr#define kernel_pmap (&kernel_pmap_store) 109292407Sbr#define pmap_kernel() kernel_pmap 110292407Sbr 111292407Sbr#define PMAP_ASSERT_LOCKED(pmap) \ 112292407Sbr mtx_assert(&(pmap)->pm_mtx, MA_OWNED) 113292407Sbr#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 114292407Sbr#define PMAP_LOCK_ASSERT(pmap, type) \ 115292407Sbr mtx_assert(&(pmap)->pm_mtx, (type)) 116292407Sbr#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 117292407Sbr#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 118292407Sbr NULL, MTX_DEF | MTX_DUPOK) 119292407Sbr#define PMAP_OWNED(pmap) mtx_owned(&(pmap)->pm_mtx) 120292407Sbr#define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 121292407Sbr#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 122292407Sbr#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 123292407Sbr 124292407Sbr#define PHYS_AVAIL_SIZE 10 125292407Sbrextern vm_paddr_t phys_avail[]; 126292407Sbrextern vm_paddr_t dump_avail[]; 127292407Sbrextern vm_offset_t virtual_avail; 128292407Sbrextern vm_offset_t virtual_end; 129292407Sbr 130292407Sbr/* 131292407Sbr * Macros to test if a mapping is mappable with an L1 Section mapping 132292407Sbr * or an L2 Large Page mapping. 133292407Sbr */ 134292407Sbr#define L1_MAPPABLE_P(va, pa, size) \ 135292407Sbr ((((va) | (pa)) & L1_OFFSET) == 0 && (size) >= L1_SIZE) 136292407Sbr 137292407Sbrvoid pmap_bootstrap(vm_offset_t, vm_paddr_t, vm_size_t); 138292407Sbrvoid pmap_kenter_device(vm_offset_t, vm_size_t, vm_paddr_t); 139292407Sbrvm_paddr_t pmap_kextract(vm_offset_t va); 140292407Sbrvoid pmap_kremove(vm_offset_t); 141292407Sbrvoid pmap_kremove_device(vm_offset_t, vm_size_t); 142292407Sbr 143292407Sbrvoid *pmap_mapdev(vm_offset_t, vm_size_t); 144292407Sbrvoid *pmap_mapbios(vm_paddr_t, vm_size_t); 145292407Sbrvoid pmap_unmapdev(vm_offset_t, vm_size_t); 146292407Sbrvoid pmap_unmapbios(vm_offset_t, vm_size_t); 147292407Sbr 148292407Sbrboolean_t pmap_map_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t); 149292407Sbrvoid pmap_unmap_io_transient(vm_page_t *, vm_offset_t *, int, boolean_t); 150292407Sbr 151292407Sbrbool pmap_get_tables(pmap_t, vm_offset_t, pd_entry_t **, pd_entry_t **, 152292407Sbr pt_entry_t **); 153292407Sbr 154292407Sbr#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 155292407Sbr 156292407Sbr#endif /* _KERNEL */ 157292407Sbr 158292407Sbr#endif /* !LOCORE */ 159292407Sbr 160292407Sbr#endif /* !_MACHINE_PMAP_H_ */ 161