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/* $OpenBSD: pmap.h,v 1.30 2023/12/11 22:12:53 kettenis Exp $ */
/*
* Mach Operating System
* Copyright (c) 1991 Carnegie Mellon University
* Copyright (c) 1991 OMRON Corporation
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
*/
#ifndef _M88K_PMAP_H_
#define _M88K_PMAP_H_
#ifdef _KERNEL
#include <machine/mmu.h>
/*
* PMAP structure
*/
struct pmap {
sdt_entry_t *pm_stab; /* virtual pointer to sdt */
apr_t pm_apr;
int pm_count; /* reference count */
struct pmap_statistics pm_stats; /* pmap statistics */
};
/* The PV (Physical to virtual) List.
*
* For each vm_page_t, pmap keeps a list of all currently valid virtual
* mappings of that page. An entry is a pv_entry_t; the list is the
* pv_head_table. This is used by things like pmap_remove, when we must
* find and remove all mappings for a particular physical page.
*/
/* XXX - struct pv_entry moved to vmparam.h because of include ordering issues */
typedef struct pmap *pmap_t;
typedef struct pv_entry *pv_entry_t;
extern pmap_t kernel_pmap;
extern struct pmap kernel_pmap_store;
extern caddr_t vmmap;
extern apr_t kernel_apr, userland_apr;
#define pmap_kernel() (&kernel_pmap_store)
#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
#define pmap_update(pmap) do { /* nothing */ } while (0)
#define pmap_clear_modify(pg) pmap_unsetbit(pg, PG_M)
#define pmap_clear_reference(pg) pmap_unsetbit(pg, PG_U)
void pmap_bootstrap(paddr_t, paddr_t);
void pmap_bootstrap_cpu(cpuid_t);
void pmap_cache_ctrl(vaddr_t, vaddr_t, u_int);
void pmap_page_uncache(paddr_t);
int pmap_set_modify(pmap_t, vaddr_t);
void pmap_unmap_firmware(void);
boolean_t pmap_unsetbit(struct vm_page *, int);
#define pmap_init_percpu() do { /* nothing */ } while (0)
#define pmap_unuse_final(p) /* nothing */
#define pmap_remove_holes(vm) do { /* nothing */ } while (0)
int pmap_translation_info(pmap_t, vaddr_t, paddr_t *, uint32_t *);
/*
* pmap_translation_info() return values
*/
#define PTI_INVALID 0
#define PTI_PTE 1
#define PTI_BATC 2
#define pmap_map_direct(pg) ((vaddr_t)VM_PAGE_TO_PHYS(pg))
#define pmap_unmap_direct(va) PHYS_TO_VM_PAGE((paddr_t)va)
#define PMAP_CHECK_COPYIN 1
#define __HAVE_PMAP_DIRECT
#define PMAP_STEAL_MEMORY
#define __HAVE_PMAP_COLLECT
#endif /* _KERNEL */
#ifndef _LOCORE
struct pv_entry {
struct pv_entry *pv_next; /* next pv_entry */
struct pmap *pv_pmap; /* pmap where mapping lies */
vaddr_t pv_va; /* virtual address for mapping */
};
struct vm_page_md {
struct pv_entry pv_ent;
int pv_flags;
};
#define VM_MDPAGE_INIT(pg) \
do { \
(pg)->mdpage.pv_ent.pv_next = NULL; \
(pg)->mdpage.pv_ent.pv_pmap = NULL; \
(pg)->mdpage.pv_ent.pv_va = 0; \
(pg)->mdpage.pv_flags = 0; \
} while (0)
#endif /* _LOCORE */
#endif /* _M88K_PMAP_H_ */
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