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Annotation of kernel/machdep/ppc/pmap.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Copyright (c) 1990 The University of Utah and
        !            27:  * the Center for Software Science at the University of Utah (CSS).
        !            28:  * All rights reserved.
        !            29:  *
        !            30:  * Permission to use, copy, modify and distribute this software is hereby
        !            31:  * granted provided that (1) source code retains these copyright, permission,
        !            32:  * and disclaimer notices, and (2) redistributions including binaries
        !            33:  * reproduce the notices in supporting documentation, and (3) all advertising
        !            34:  * materials mentioning features or use of this software display the following
        !            35:  * acknowledgement: ``This product includes software developed by the Center
        !            36:  * for Software Science at the University of Utah.''
        !            37:  *
        !            38:  * THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
        !            39:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSS DISCLAIM ANY LIABILITY OF
        !            40:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            41:  *
        !            42:  * CSS requests users of this software to return to [email protected] any
        !            43:  * improvements that they make and grant CSS redistribution rights.
        !            44:  *
        !            45:  *     Utah $Hdr: pmap.h 1.13 91/09/25$
        !            46:  *     Author: Mike Hibler, Bob Wheeler, University of Utah CSS, 9/90
        !            47:  */
        !            48: 
        !            49: /*
        !            50:  *     Pmap header for ppc
        !            51:  */
        !            52: 
        !            53: #ifndef        _PPC_PMAP_H_
        !            54: #define        _PPC_PMAP_H_
        !            55: 
        !            56: /*#include <mach/vm_types.h>*/
        !            57: #include <mach/machine/vm_types.h>
        !            58: #include <mach/vm_prot.h>
        !            59: #include <mach/vm_statistics.h>
        !            60: #include <mach/machine/kern_return.h>
        !            61: #include <kern/lock.h>
        !            62: /*#include <kern/queue.h>*/
        !            63: 
        !            64: /* The size of the hash table and mapping entries and the size
        !            65:  * of the VM needed by the linux server is proportional
        !            66:  * to the amount of physical memory. The hash table and mapping
        !            67:  * entries must be allocated in contiguous physical memory.
        !            68:  * Currently, the limits are set up so that 128M is the ceiling
        !            69:  */
        !            70: 
        !            71: #define MAX_SUPPORTED_PHYSICAL_MEMORY  (128*1024*1024)
        !            72: 
        !            73: struct pmap {
        !            74:        decl_simple_lock_data(, lock)        /* Lock on map */
        !            75:        int                     ref_count;   /* reference count */
        !            76:        space_t                 space;       /* space for this pmap */
        !            77:        struct pmap             *next;       /* linked list of free pmaps */
        !            78:        struct pmap_statistics  stats;       /* statistics */
        !            79: };
        !            80: 
        !            81: typedef struct pmap *pmap_t;
        !            82: 
        !            83: #define PMAP_NULL  ((pmap_t) 0)
        !            84: 
        !            85: extern pmap_t  kernel_pmap;                    /* The kernel's map */
        !            86: 
        !            87: #define        PMAP_SWITCH_USER(th, map, my_cpu) th->map = map;        
        !            88: 
        !            89: #define PMAP_ACTIVATE(pmap, th, cpu)
        !            90: #define PMAP_DEACTIVATE(pmap, th, cpu)
        !            91: #define PMAP_CONTEXT(pmap,th)
        !            92: 
        !            93: #define pmap_kernel_va(VA)     \
        !            94:        (((VA) >= VM_MIN_KERNEL_ADDRESS) && ((VA) <= VM_MAX_KERNEL_ADDRESS))
        !            95: 
        !            96: #define        PPC_SID_KERNEL  0       /* Must change KERNEL_SEG_REG0_VALUE if !0 */
        !            97: #define SID_MAX        ((1<<20) - 1)   /* Space ID=20 bits, segment_id=SID + 4 bits */
        !            98: #define PPC_SID_PRIME 356299   /* generate non-repetative "different" sids */
        !            99: #define PPC_SID_MASK  0xfffff   /* within a 20-bit field */
        !           100: 
        !           101: #define pmap_kernel()                  (kernel_pmap)
        !           102: #define        pmap_resident_count(pmap)       ((pmap)->stats.resident_count)
        !           103: #define pmap_remove_attributes(pmap,start,end)
        !           104: #define pmap_copy(dpmap,spmap,da,len,sa)
        !           105: 
        !           106: #define pmap_phys_address(x)   ((x) << PPC_PGSHIFT)
        !           107: #define pmap_phys_to_frame(x)  ((x) >> PPC_PGSHIFT)
        !           108: 
        !           109: #define PMAP_PTOB(x)           ((x) << PPC_PGSHIFT)
        !           110: 
        !           111: /* 
        !           112:  * prototypes.
        !           113:  */
        !           114: extern void            ppc_protection_init(void);
        !           115: extern vm_offset_t     kvtophys(vm_offset_t addr);
        !           116: extern vm_offset_t     phystokv(vm_offset_t addr);
        !           117: extern vm_offset_t     pmap_map(vm_offset_t va,
        !           118:                                 vm_offset_t spa,
        !           119:                                 vm_offset_t epa,
        !           120:                                 vm_prot_t prot);
        !           121: extern kern_return_t    pmap_add_physical_memory(vm_offset_t spa,
        !           122:                                                 vm_offset_t epa,
        !           123:                                                 boolean_t available,
        !           124:                                                 unsigned int attr);
        !           125: extern vm_offset_t     pmap_map_bd(vm_offset_t va,
        !           126:                                    vm_offset_t spa,
        !           127:                                    vm_offset_t epa,
        !           128:                                    vm_prot_t prot);
        !           129: extern void            pmap_bootstrap(unsigned int mem_size,
        !           130:                                       vm_offset_t *first_avail);
        !           131: extern void            pmap_block_map(vm_offset_t pa,
        !           132:                                       vm_size_t size,
        !           133:                                       vm_prot_t prot,
        !           134:                                       int entry, 
        !           135:                                       int dtlb);
        !           136: extern void            pmap_switch(pmap_t);
        !           137: 
        !           138: extern vm_offset_t pmap_extract(pmap_t pmap,
        !           139:                                vm_offset_t va);
        !           140: 
        !           141: extern void pmap_remove_all(vm_offset_t pa);
        !           142: 
        !           143: extern boolean_t pmap_verify_free(vm_offset_t pa);
        !           144: 
        !           145: extern void flush_cache(vm_offset_t pa, unsigned length);
        !           146: extern void flush_cache_v(vm_offset_t pa, unsigned length);
        !           147: extern void invalidate_cache_v(vm_offset_t pa, unsigned length);
        !           148: typedef enum {
        !           149:     cache_default,
        !           150:     cache_writethrough,
        !           151:     cache_disable
        !           152: } cache_spec_t;
        !           153: 
        !           154: void pmap_enter_cache_spec(
        !           155:                pmap_t          pmap,
        !           156:                vm_offset_t     va,
        !           157:                vm_offset_t     pa,
        !           158:                vm_prot_t       prot,
        !           159:                boolean_t       wired,
        !           160:                cache_spec_t    caching);
        !           161: 
        !           162: #endif /* _PPC_PMAP_H_ */
        !           163: 

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