/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* Things that don't need to be exported from pmap. Putting * them here and not in pmap.h avoids major recompiles when * modifying something either here or in proc_reg.h */ #ifndef _PMAP_INTERNALS_H_ #define _PMAP_INTERNALS_H_ /* * Definition of the flags in the low 5 bits of the phys_link field of the phys_entry */ #define PHYS_LOCK 0x00000001 #define PHYS_FLAGS 0x0000001F #ifndef ASSEMBLER #include <cpus.h> #include <mach_ldebug.h> #include <debug.h> #include <mach/vm_types.h> #include <mach/machine/vm_types.h> #include <mach/vm_prot.h> #include <mach/vm_statistics.h> #include <kern/assert.h> #include <kern/cpu_number.h> #include <kern/lock.h> #include <kern/queue.h> #include <ppc/proc_reg.h> /* Page table entries are stored in groups (PTEGS) in a hash table */ #if __PPC__ #if _BIG_ENDIAN == 0 error - bitfield structures are not checked for bit ordering in words #endif /* _BIG_ENDIAN */ #endif /* __PPC__ */ /* * Don't change these structures unless you change the assembly code */ struct phys_entry { struct mapping *phys_link; /* MUST BE FIRST - chain of mappings and flags in the low 5 bits, see above */ unsigned int pte1; /* referenced/changed/wimg - info update atomically */ }; #define PHYS_NULL ((struct phys_entry *)0) /* Memory may be non-contiguous. This data structure contains info * for mapping this non-contiguous space into the contiguous * physical->virtual mapping tables. An array of this type is * provided to the pmap system at bootstrap by ppc_vm_init. * * NB : regions must be in order in this structure. */ typedef struct mem_region { vm_offset_t start; /* Address of base of region */ struct phys_entry *phys_table; /* base of region's table */ unsigned int end; /* End address+1 */ } mem_region_t; /* PMAP_MEM_REGION_MAX has a PowerMac dependancy - at least the value of * kMaxRAMBanks in ppc/POWERMAC/nkinfo.h */ #define PMAP_MEM_REGION_MAX 26 extern mem_region_t pmap_mem_regions[PMAP_MEM_REGION_MAX]; extern int pmap_mem_regions_count; /* keep track of free regions of physical memory so that we can offer * them up via pmap_next_page later on */ #define FREE_REGION_MAX 8 extern mem_region_t free_regions[FREE_REGION_MAX]; extern int free_regions_count; /* Prototypes */ struct phys_entry *pmap_find_physentry(vm_offset_t pa); #if DEBUG extern int pmdebug; #define PDB_LOCK 0x100 #define LOCKPRINTF(args) if (pmdebug & PDB_LOCK) printf args; else #else /* DEBUG */ #define LOCKPRINTF(args) #endif /* DEBUG */ extern vm_offset_t hash_table_base; extern unsigned int hash_table_size; #endif #endif /* _PMAP_INTERNALS_H_ */