1139790Simp/*- 266458Sdfr * Copyright (c) 1991 Regents of the University of California. 366458Sdfr * All rights reserved. 466458Sdfr * 566458Sdfr * This code is derived from software contributed to Berkeley by 666458Sdfr * the Systems Programming Group of the University of Utah Computer 766458Sdfr * Science Department and William Jolitz of UUNET Technologies Inc. 866458Sdfr * 966458Sdfr * Redistribution and use in source and binary forms, with or without 1066458Sdfr * modification, are permitted provided that the following conditions 1166458Sdfr * are met: 1266458Sdfr * 1. Redistributions of source code must retain the above copyright 1366458Sdfr * notice, this list of conditions and the following disclaimer. 1466458Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1566458Sdfr * notice, this list of conditions and the following disclaimer in the 1666458Sdfr * documentation and/or other materials provided with the distribution. 1766458Sdfr * 4. Neither the name of the University nor the names of its contributors 1866458Sdfr * may be used to endorse or promote products derived from this software 1966458Sdfr * without specific prior written permission. 2066458Sdfr * 2166458Sdfr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2266458Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2366458Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2466458Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2566458Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2666458Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2766458Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2866458Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2966458Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3066458Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3166458Sdfr * SUCH DAMAGE. 3266458Sdfr * 3366458Sdfr * Derived from hp300 version by Mike Hibler, this version by William 3466458Sdfr * Jolitz uses a recursive map [a pde points to the page directory] to 3566458Sdfr * map the page tables using the pagetables themselves. This is done to 3666458Sdfr * reduce the impact on kernel virtual memory for lots of sparse address 3766458Sdfr * space, and to reduce the cost of memory to each process. 3866458Sdfr * 3966458Sdfr * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90 4066458Sdfr * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91 4166458Sdfr * from: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp 4266458Sdfr * $FreeBSD$ 4366458Sdfr */ 4466458Sdfr 4566458Sdfr#ifndef _MACHINE_PMAP_H_ 4666458Sdfr#define _MACHINE_PMAP_H_ 4766458Sdfr 4866458Sdfr#include <sys/queue.h> 49132378Salc#include <sys/_lock.h> 50132378Salc#include <sys/_mutex.h> 51135590Smarcel#include <machine/atomic.h> 5283900Sdfr#include <machine/pte.h> 53219808Smarcel#include <machine/vmparam.h> 5466458Sdfr 5566458Sdfr#ifdef _KERNEL 5666458Sdfr 5785142Sdfr#define MAXKPT (PAGE_SIZE/sizeof(vm_offset_t)) 5885142Sdfr 59153179Sjhb#define vtophys(va) pmap_kextract((vm_offset_t)(va)) 6066458Sdfr 6166458Sdfr#endif /* _KERNEL */ 6266458Sdfr 6366458Sdfr/* 6466458Sdfr * Pmap stuff 6566458Sdfr */ 6666458Sdfrstruct pv_entry; 67242121Salcstruct pv_chunk; 6866458Sdfr 6966458Sdfrstruct md_page { 7066458Sdfr TAILQ_HEAD(,pv_entry) pv_list; 71223873Smarcel vm_memattr_t memattr; 7266458Sdfr}; 7366458Sdfr 7466458Sdfrstruct pmap { 75132378Salc struct mtx pm_mtx; 76242121Salc TAILQ_HEAD(,pv_chunk) pm_pvchunk; /* list of mappings in pmap */ 77219808Smarcel uint32_t pm_rid[IA64_VM_MINKERN_REGION]; 7866458Sdfr struct pmap_statistics pm_stats; /* pmap statistics */ 7966458Sdfr}; 8066458Sdfr 8166458Sdfrtypedef struct pmap *pmap_t; 8266458Sdfr 8366458Sdfr#ifdef _KERNEL 8495710Speterextern struct pmap kernel_pmap_store; 8595710Speter#define kernel_pmap (&kernel_pmap_store) 86132378Salc 87132378Salc#define PMAP_LOCK(pmap) mtx_lock(&(pmap)->pm_mtx) 88132378Salc#define PMAP_LOCK_ASSERT(pmap, type) \ 89132378Salc mtx_assert(&(pmap)->pm_mtx, (type)) 90132378Salc#define PMAP_LOCK_DESTROY(pmap) mtx_destroy(&(pmap)->pm_mtx) 91132378Salc#define PMAP_LOCK_INIT(pmap) mtx_init(&(pmap)->pm_mtx, "pmap", \ 92132378Salc NULL, MTX_DEF) 93132378Salc#define PMAP_LOCKED(pmap) mtx_owned(&(pmap)->pm_mtx) 94132378Salc#define PMAP_MTX(pmap) (&(pmap)->pm_mtx) 95132378Salc#define PMAP_TRYLOCK(pmap) mtx_trylock(&(pmap)->pm_mtx) 96132378Salc#define PMAP_UNLOCK(pmap) mtx_unlock(&(pmap)->pm_mtx) 9766458Sdfr#endif 9866458Sdfr 9966458Sdfr/* 10066458Sdfr * For each vm_page_t, there is a list of all currently valid virtual 101164250Sru * mappings of that page. An entry is a pv_entry_t, the list is pv_list. 10266458Sdfr */ 10366458Sdfrtypedef struct pv_entry { 10466458Sdfr vm_offset_t pv_va; /* virtual address for mapping */ 10566458Sdfr TAILQ_ENTRY(pv_entry) pv_list; 10666458Sdfr} *pv_entry_t; 10766458Sdfr 10866458Sdfr#ifdef _KERNEL 10966458Sdfr 110216094Salcextern vm_paddr_t phys_avail[]; 11166458Sdfrextern vm_offset_t virtual_avail; 11266458Sdfrextern vm_offset_t virtual_end; 11366458Sdfr 114149777Smarcelextern uint64_t pmap_vhpt_base[]; 115149777Smarcelextern int pmap_vhpt_log2size; 116149777Smarcel 117268201Smarcel#define pmap_mapbios(pa,sz) pmap_mapdev_attr(pa,sz,VM_MEMATTR_UNCACHEABLE) 118268201Smarcel#define pmap_mapdev(pa,sz) pmap_mapdev_attr(pa,sz,VM_MEMATTR_UNCACHEABLE) 119268201Smarcel#define pmap_unmapbios(va,sz) pmap_unmapdev(va,sz) 120268201Smarcel 121223873Smarcel#define pmap_page_get_memattr(m) ((m)->md.memattr) 122268201Smarcel#define pmap_page_is_mapped(m) (!TAILQ_EMPTY(&(m)->md.pv_list)) 123237168Salc#define pmap_page_is_write_mapped(m) (((m)->aflags & PGA_WRITEABLE) != 0) 124130965Salc 125268201Smarcelvoid pmap_kenter(vm_offset_t va, vm_paddr_t pa); 126268201Smarcelvm_paddr_t pmap_kextract(vm_offset_t va); 127268201Smarcelvoid pmap_kremove(vm_offset_t); 128268201Smarcelvoid *pmap_mapdev_attr(vm_paddr_t, vm_size_t, vm_memattr_t); 129268201Smarcelvoid pmap_page_set_memattr(vm_page_t, vm_memattr_t); 130268201Smarcelvoid pmap_unmapdev(vm_offset_t, vm_size_t); 131268201Smarcel 132268201Smarcel/* Machine-architecture private */ 133200200Smarcelvm_offset_t pmap_alloc_vhpt(void); 13492843Salfredvoid pmap_bootstrap(void); 135268184Smarcelvoid pmap_invalidate_all(void); 136268201Smarcelvm_offset_t pmap_mapdev_priv(vm_paddr_t, vm_size_t, vm_memattr_t); 137223873Smarcelvm_offset_t pmap_page_to_va(vm_page_t); 138223873Smarcelvm_offset_t pmap_steal_memory(vm_size_t); 139223873Smarcelstruct pmap *pmap_switch(struct pmap *pmap); 14066458Sdfr 14166458Sdfr#endif /* _KERNEL */ 14266458Sdfr 14366458Sdfr#endif /* !_MACHINE_PMAP_H_ */ 144