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/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*
* $NetBSD: pmap.h,v 1.17 2000/03/30 16:18:24 jdolecek Exp $
* $FreeBSD$
*/
#ifndef _MACHINE_PMAP_H_
#define _MACHINE_PMAP_H_
#include <machine/pte.h>
/*
* Segment registers
*/
#ifndef LOCORE
typedef u_int sr_t;
#endif /* LOCORE */
#define SR_TYPE 0x80000000
#define SR_SUKEY 0x40000000
#define SR_PRKEY 0x20000000
#define SR_VSID 0x00ffffff
#ifndef LOCORE
struct pv_entry {
struct pv_entry *pv_next; /* Linked list of mappings */
int pv_idx; /* Index into ptable */
vm_offset_t pv_va; /* virtual address of mapping */
};
struct md_page {
int pv_list_count;
int pv_flags;
TAILQ_HEAD(,pv_entry) pv_list;
};
/*
* Pmap stuff
*/
struct pmap {
sr_t pm_sr[16]; /* segments used in this pmap */
int pm_refs; /* ref count */
struct pmap_statistics pm_stats; /* pmap statistics */
};
typedef struct pmap *pmap_t;
typedef struct pv_entry *pv_entry_t;
#ifdef _KERNEL
#define pmap_clear_modify(pg) (ptemodify((pg), PTE_CHG, 0))
#define pmap_clear_reference(pg) (ptemodify((pg), PTE_REF, 0))
#define pmap_is_modified(pg) (ptebits((pg), PTE_CHG))
#define pmap_is_referenced(pg) (ptebits((pg), PTE_REF))
#define pmap_unwire(pm, va)
#define pmap_phys_address(x) (x)
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
extern pmap_t kernel_pmap;
extern vm_offset_t avail_end;
extern vm_offset_t avail_start;
extern vm_offset_t phys_avail[];
extern vm_offset_t virtual_avail;
extern vm_offset_t virtual_end;
void pmap_bootstrap __P((u_int kernelstart, u_int kernelend));
vm_offset_t pmap_steal_memory __P((vm_size_t));
boolean_t ptemodify __P((struct vm_page *, u_int, u_int));
int ptebits __P((struct vm_page *, int));
#if 0
#define PMAP_NEED_PROCWR
void pmap_procwr __P((struct proc *, vaddr_t, size_t));
#endif
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*
* Note: This won't work if we have more memory than can be direct-mapped
* VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have
* this problem, too.
*/
#define PMAP_MAP_POOLPAGE(pa) (pa)
#define PMAP_UNMAP_POOLPAGE(pa) (pa)
#define vtophys(va) pmap_kextract(((vm_offset_t) (va)))
extern pte_t PTmap[];
#define vtopte(x) (PTmap + powerpc_btop(x))
static __inline vm_offset_t
pmap_kextract(vm_offset_t va)
{
/* XXX: coming soon... */
return (0);
}
#endif /* _KERNEL */
#endif /* LOCORE */
#endif /* _MACHINE_PMAP_H_ */
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