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Annotation of XNU/osfmk/ppc/pmap_internals.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * @OSF_COPYRIGHT@
        !            24:  */
        !            25: 
        !            26: /* Things that don't need to be exported from pmap. Putting
        !            27:  * them here and not in pmap.h avoids major recompiles when
        !            28:  * modifying something either here or in proc_reg.h
        !            29:  */
        !            30: 
        !            31: #ifndef _PMAP_INTERNALS_H_
        !            32: #define _PMAP_INTERNALS_H_
        !            33: 
        !            34: /*
        !            35:  *     Definition of the flags in the low 5 bits of the phys_link field of the phys_entry
        !            36:  */
        !            37:  
        !            38: #define PHYS_LOCK      0x00000001
        !            39: #define PHYS_FLAGS     0x0000001F
        !            40: 
        !            41: #ifndef ASSEMBLER
        !            42: 
        !            43: #include <cpus.h>
        !            44: #include <mach_ldebug.h>
        !            45: #include <debug.h>
        !            46: 
        !            47: #include <mach/vm_types.h>
        !            48: #include <mach/machine/vm_types.h>
        !            49: #include <mach/vm_prot.h>
        !            50: #include <mach/vm_statistics.h>
        !            51: #include <kern/assert.h>
        !            52: #include <kern/cpu_number.h>
        !            53: #include <kern/lock.h>
        !            54: #include <kern/queue.h>
        !            55: #include <ppc/proc_reg.h>
        !            56: 
        !            57: 
        !            58: /* Page table entries are stored in groups (PTEGS) in a hash table */
        !            59: 
        !            60: #if __PPC__
        !            61: #if _BIG_ENDIAN == 0
        !            62: error - bitfield structures are not checked for bit ordering in words
        !            63: #endif /* _BIG_ENDIAN */
        !            64: #endif /* __PPC__ */
        !            65: 
        !            66: /*
        !            67:  * Don't change these structures unless you change the assembly code
        !            68:  */
        !            69: 
        !            70: struct phys_entry {
        !            71:        struct mapping  *phys_link;             /* MUST BE FIRST - chain of mappings and flags in the low 5 bits, see above */
        !            72:        unsigned int    pte1;                   /* referenced/changed/wimg - info update atomically */
        !            73: };
        !            74: 
        !            75:  
        !            76: #define PHYS_NULL      ((struct phys_entry *)0)
        !            77: 
        !            78: /* Memory may be non-contiguous. This data structure contains info
        !            79:  * for mapping this non-contiguous space into the contiguous
        !            80:  * physical->virtual mapping tables. An array of this type is
        !            81:  * provided to the pmap system at bootstrap by ppc_vm_init.
        !            82:  *
        !            83:  * NB : regions must be in order in this structure.
        !            84:  */
        !            85: 
        !            86: typedef struct mem_region {
        !            87:        vm_offset_t start;      /* Address of base of region */
        !            88:        struct phys_entry *phys_table; /* base of region's table */
        !            89:        unsigned int end;       /* End address+1 */
        !            90: } mem_region_t;
        !            91: 
        !            92: /* PMAP_MEM_REGION_MAX has a PowerMac dependancy - at least the value of
        !            93:  * kMaxRAMBanks in ppc/POWERMAC/nkinfo.h
        !            94:  */
        !            95: #define PMAP_MEM_REGION_MAX 26
        !            96: 
        !            97: extern mem_region_t pmap_mem_regions[PMAP_MEM_REGION_MAX];
        !            98: extern int          pmap_mem_regions_count;
        !            99: 
        !           100: /* keep track of free regions of physical memory so that we can offer
        !           101:  * them up via pmap_next_page later on
        !           102:  */
        !           103: 
        !           104: #define FREE_REGION_MAX 8
        !           105: extern mem_region_t free_regions[FREE_REGION_MAX];
        !           106: extern int          free_regions_count;
        !           107: 
        !           108: /* Prototypes */
        !           109: 
        !           110: struct phys_entry *pmap_find_physentry(vm_offset_t pa);
        !           111: 
        !           112: 
        !           113: #if    DEBUG
        !           114: extern int pmdebug;
        !           115: #define PDB_LOCK       0x100
        !           116: #define LOCKPRINTF(args)       if (pmdebug & PDB_LOCK) printf args; else
        !           117: #else  /* DEBUG */
        !           118: #define LOCKPRINTF(args)
        !           119: #endif /* DEBUG */
        !           120: 
        !           121: extern vm_offset_t     hash_table_base;
        !           122: extern unsigned int    hash_table_size;
        !           123: 
        !           124: #define TLBSYNC_SYNC()                                                 \
        !           125:        {                                                               \
        !           126:                if (PROCESSOR_VERSION != PROCESSOR_VERSION_601)         \
        !           127:                        __asm__ volatile("tlbsync" __CASMNL__ " sync");         \
        !           128:        } while (0)
        !           129: 
        !           130: #endif
        !           131: #endif /* _PMAP_INTERNALS_H_ */

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