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/* $OpenBSD: pmap.h,v 1.18 2023/01/31 15:18:55 deraadt Exp $ */
/* $NetBSD: pmap.h,v 1.28 2006/04/10 23:12:11 uwe Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by UCHIYAMA Yasushi.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* OpenBSD/sh pmap:
* pmap.pm_ptp[512] ... 512 slot of page table page
* page table page contains 1024 PTEs. (PAGE_SIZE / sizeof(pt_entry_t))
* | PTP 11bit | PTOFSET 10bit | PAGE_MASK 12bit |
*/
#ifndef _SH_PMAP_H_
#define _SH_PMAP_H_
#include <sh/pte.h>
#ifdef _KERNEL
#include <sys/queue.h>
#define PMAP_CHECK_COPYIN 1
#define PMAP_STEAL_MEMORY
#define PMAP_GROWKERNEL
#define __PMAP_PTP_N 512 /* # of page table page maps 2GB. */
typedef struct pmap {
pt_entry_t **pm_ptp;
int pm_asid;
int pm_refcnt;
struct pmap_statistics pm_stats; /* pmap statistics */
} *pmap_t;
extern struct pmap __pmap_kernel;
void pmap_bootstrap(void);
#define pmap_unuse_final(p) do { /* nothing */ } while (0)
#define pmap_remove_holes(vm) do { /* nothing */ } while (0)
#define pmap_kernel() (&__pmap_kernel)
#define pmap_deactivate(pmap) do { /* nothing */ } while (0)
#define pmap_update(pmap) do { /* nothing */ } while (0)
#define pmap_copy(dp,sp,d,l,s) do { /* nothing */ } while (0)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
/* ARGSUSED */
static __inline void
pmap_remove_all(struct pmap *pmap)
{
/* Nothing. */
}
/*
* Avoid virtual cache aliases on SH4 CPUs
* which have the virtually-indexed cache.
*/
#ifdef SH4
#define PMAP_PREFER
vaddr_t pmap_prefer_align(void);
vaddr_t pmap_prefer_offset(vaddr_t);
/* pmap prefer alignment */
#define PMAP_PREFER_ALIGN() pmap_prefer_align()
/* pmap prefer offset in alignment */
#define PMAP_PREFER_OFFSET(of) pmap_prefer_offset(of)
#endif /* SH4 */
#define __HAVE_PMAP_DIRECT
vaddr_t pmap_map_direct(vm_page_t);
vm_page_t pmap_unmap_direct(vaddr_t);
/* MD pmap utils. */
pt_entry_t *__pmap_pte_lookup(pmap_t, vaddr_t);
pt_entry_t *__pmap_kpte_lookup(vaddr_t);
boolean_t __pmap_pte_load(pmap_t, vaddr_t, int);
#endif /* !_KERNEL */
#define PG_PMAP_REF PG_PMAP0
#define PG_PMAP_MOD PG_PMAP1
#ifndef _LOCORE
struct pv_entry;
struct vm_page_md {
SLIST_HEAD(, pv_entry) pvh_head;
};
#define VM_MDPAGE_INIT(pg) \
do { \
struct vm_page_md *pvh = &(pg)->mdpage; \
SLIST_INIT(&pvh->pvh_head); \
} while (/*CONSTCOND*/0)
#endif /* _LOCORE */
#endif /* !_SH_PMAP_H_ */
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