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553cb3ed46
sys/param.h was manually adjusted to not define __NetBSD_Version__ since it will be defined by the compiler.
240 lines
7.7 KiB
C
Vendored
240 lines
7.7 KiB
C
Vendored
/* $NetBSD: pmap.h,v 1.134 2022/08/20 23:49:31 riastradh Exp $ */
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/*
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* Copyright (c) 1997 Charles D. Cranor and Washington University.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Frank van der Linden for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* pmap.h: see pmap.c for the history of this pmap module.
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*/
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#ifndef _X86_PMAP_H_
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#define _X86_PMAP_H_
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#if defined(_KERNEL)
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#include <x86/pmap_pv.h>
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#include <uvm/pmap/pmap_pvt.h>
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/*
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* MD flags that we use for pmap_enter and pmap_kenter_pa:
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*/
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/*
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* macros
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*/
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#define pmap_clear_modify(pg) pmap_clear_attrs(pg, PP_ATTRS_D)
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#define pmap_clear_reference(pg) pmap_clear_attrs(pg, PP_ATTRS_A)
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#define pmap_copy(DP,SP,D,L,S) __USE(L)
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#define pmap_is_modified(pg) pmap_test_attrs(pg, PP_ATTRS_D)
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#define pmap_is_referenced(pg) pmap_test_attrs(pg, PP_ATTRS_A)
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#define pmap_move(DP,SP,D,L,S)
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#define pmap_phys_address(ppn) (x86_ptob(ppn) & ~X86_MMAP_FLAG_MASK)
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#define pmap_mmap_flags(ppn) x86_mmap_flags(ppn)
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#if defined(__x86_64__) || defined(PAE)
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#define X86_MMAP_FLAG_SHIFT (64 - PGSHIFT)
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#else
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#define X86_MMAP_FLAG_SHIFT (32 - PGSHIFT)
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#endif
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#define X86_MMAP_FLAG_MASK 0xf
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#define X86_MMAP_FLAG_PREFETCH 0x1
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/*
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* prototypes
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*/
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void pmap_activate(struct lwp *);
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void pmap_bootstrap(vaddr_t);
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bool pmap_clear_attrs(struct vm_page *, unsigned);
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bool pmap_pv_clear_attrs(paddr_t, unsigned);
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void pmap_deactivate(struct lwp *);
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void pmap_page_remove(struct vm_page *);
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void pmap_pv_remove(paddr_t);
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void pmap_remove(struct pmap *, vaddr_t, vaddr_t);
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bool pmap_test_attrs(struct vm_page *, unsigned);
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void pmap_write_protect(struct pmap *, vaddr_t, vaddr_t, vm_prot_t);
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void pmap_load(void);
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paddr_t pmap_init_tmp_pgtbl(paddr_t);
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bool pmap_remove_all(struct pmap *);
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void pmap_ldt_cleanup(struct lwp *);
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void pmap_ldt_sync(struct pmap *);
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void pmap_kremove_local(vaddr_t, vsize_t);
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#define __HAVE_PMAP_PV_TRACK 1
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void pmap_pv_init(void);
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void pmap_pv_track(paddr_t, psize_t);
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void pmap_pv_untrack(paddr_t, psize_t);
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u_int x86_mmap_flags(paddr_t);
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#define PMAP_GROWKERNEL /* turn on pmap_growkernel interface */
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#define PMAP_FORK /* turn on pmap_fork interface */
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/*
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* inline functions
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*/
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/*
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* pmap_page_protect: change the protection of all recorded mappings
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* of a managed page
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*
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* => this function is a frontend for pmap_page_remove/pmap_clear_attrs
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* => we only have to worry about making the page more protected.
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* unprotecting a page is done on-demand at fault time.
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*/
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__inline static void __unused
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pmap_page_protect(struct vm_page *pg, vm_prot_t prot)
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{
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if ((prot & VM_PROT_WRITE) == 0) {
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if (prot & (VM_PROT_READ|VM_PROT_EXECUTE)) {
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(void)pmap_clear_attrs(pg, PP_ATTRS_W);
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} else {
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pmap_page_remove(pg);
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}
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}
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}
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/*
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* pmap_pv_protect: change the protection of all recorded mappings
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* of an unmanaged page
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*/
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__inline static void __unused
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pmap_pv_protect(paddr_t pa, vm_prot_t prot)
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{
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if ((prot & VM_PROT_WRITE) == 0) {
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if (prot & (VM_PROT_READ|VM_PROT_EXECUTE)) {
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(void)pmap_pv_clear_attrs(pa, PP_ATTRS_W);
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} else {
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pmap_pv_remove(pa);
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}
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}
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}
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/*
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* pmap_protect: change the protection of pages in a pmap
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*
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* => this function is a frontend for pmap_remove/pmap_write_protect
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* => we only have to worry about making the page more protected.
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* unprotecting a page is done on-demand at fault time.
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*/
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__inline static void __unused
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pmap_protect(struct pmap *pmap, vaddr_t sva, vaddr_t eva, vm_prot_t prot)
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{
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if ((prot & VM_PROT_WRITE) == 0) {
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if (prot & (VM_PROT_READ|VM_PROT_EXECUTE)) {
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pmap_write_protect(pmap, sva, eva, prot);
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} else {
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pmap_remove(pmap, sva, eva);
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}
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}
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}
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paddr_t vtophys(vaddr_t);
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vaddr_t pmap_map(vaddr_t, paddr_t, paddr_t, vm_prot_t);
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void pmap_cpu_init_late(struct cpu_info *);
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/* pmap functions with machine addresses */
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void pmap_kenter_ma(vaddr_t, paddr_t, vm_prot_t, u_int);
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int pmap_enter_ma(struct pmap *, vaddr_t, paddr_t, paddr_t,
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vm_prot_t, u_int, int);
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bool pmap_extract_ma(pmap_t, vaddr_t, paddr_t *);
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paddr_t pmap_get_physpage(void);
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/*
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* Hooks for the pool allocator.
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*/
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#define POOL_VTOPHYS(va) vtophys((vaddr_t) (va))
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#ifdef __HAVE_DIRECT_MAP
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extern vaddr_t pmap_direct_base;
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extern vaddr_t pmap_direct_end;
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#define PMAP_DIRECT_BASE pmap_direct_base
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#define PMAP_DIRECT_END pmap_direct_end
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#define PMAP_DIRECT_MAP(pa) ((vaddr_t)PMAP_DIRECT_BASE + (pa))
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#define PMAP_DIRECT_UNMAP(va) ((paddr_t)(va) - PMAP_DIRECT_BASE)
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/*
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* Alternate mapping hooks for pool pages.
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*/
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#define PMAP_MAP_POOLPAGE(pa) PMAP_DIRECT_MAP((pa))
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#define PMAP_UNMAP_POOLPAGE(va) PMAP_DIRECT_UNMAP((va))
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#endif /* __HAVE_DIRECT_MAP */
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#define __HAVE_VM_PAGE_MD
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#define VM_MDPAGE_INIT(pg) \
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memset(&(pg)->mdpage, 0, sizeof((pg)->mdpage)); \
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PMAP_PAGE_INIT(&(pg)->mdpage.mp_pp)
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struct vm_page_md {
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struct pmap_page mp_pp;
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};
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#endif /* _KERNEL */
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#endif /* _X86_PMAP_H_ */ |