Return to pmap.h CVS log

Up to [Apple Darwin 0.x] / kernel / machdep / i386

Annotation of kernel/machdep/i386/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) 1992 NeXT Computer, Inc.
        !            27:  *
        !            28:  * Intel386 Family:    Definitions for pmap.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 15 December 1992 ? at NeXT
        !            33:  *     Removed ldt from pmap.
        !            34:  *
        !            35:  * 22 August 1992 ? at NeXT
        !            36:  *     Moved 'section' definition over to pmap_private.h.
        !            37:  *
        !            38:  * 9 April 1992 ? at NeXT
        !            39:  *     Created.
        !            40:  */
        !            41: 
        !            42: #import <mach/vm_param.h>
        !            43: #import <mach/vm_prot.h>
        !            44: #import <mach/vm_statistics.h>
        !            45: 
        !            46: #import <kern/lock.h>
        !            47: 
        !            48: typedef struct pt_entry {
        !            49:     unsigned int       valid   :1,
        !            50:                        prot    :2,
        !            51: #define PT_PROT_KR     0
        !            52: #define PT_PROT_KRW    1
        !            53: #define PT_PROT_UR     2
        !            54: #define PT_PROT_URW    3
        !            55:                        cachewrt:1,     /* 486 specific */
        !            56:                        cachedis:1,     /* 486 specific */
        !            57:                        refer   :1,
        !            58:                        dirty   :1,
        !            59:                                :2,
        !            60:                        wired   :1,
        !            61:                                :1,
        !            62:                                :1,
        !            63:                        pfn     :20;
        !            64: } pt_entry_t;
        !            65: 
        !            66: #define PT_ENTRY_NULL  ((pt_entry_t *) 0)
        !            67: 
        !            68: typedef struct pd_entry {
        !            69:     unsigned int       valid   :1,
        !            70:                        prot    :2,
        !            71:                                :2,
        !            72:                        refer   :1,
        !            73:                                :3,
        !            74:                                :3,
        !            75:                        pfn     :20;
        !            76: } pd_entry_t;
        !            77: 
        !            78: #define PD_ENTRY_NULL  ((pd_entry_t *) 0)
        !            79: 
        !            80: /*
        !            81:  * This is the offset of kernel memory
        !            82:  * in the address translation trees.
        !            83:  */
        !            84: #define KERNEL_LINEAR_BASE     VM_MAX_ADDRESS
        !            85: 
        !            86: typedef struct pmap {
        !            87:     pd_entry_t *       root;   /* virtual address used for walking tree */
        !            88:     unsigned int       cr3;    /* actual value for cr3 */
        !            89:     int                        ref_count;
        !            90:     simple_lock_data_t lock;
        !            91:     struct pmap_statistics
        !            92:                        stats;
        !            93:     unsigned int       cpus_using;
        !            94: } *pmap_t;
        !            95: 
        !            96: #define PMAP_NULL      ((pmap_t) 0)
        !            97: 
        !            98: /*
        !            99:  * With only one CPU, we just have to indicate whether the pmap is
        !           100:  * in use.
        !           101:  */
        !           102: #define PMAP_ACTIVATE(pmap, thread, my_cpu)    \
        !           103: MACRO_BEGIN                                    \
        !           104:     (pmap)->cpus_using = TRUE;                 \
        !           105: MACRO_END
        !           106: 
        !           107: #define PMAP_DEACTIVATE(pmap, thread, cpu)     \
        !           108: MACRO_BEGIN                                    \
        !           109:     (pmap)->cpus_using = FALSE;                        \
        !           110: MACRO_END
        !           111: 
        !           112: /*
        !           113:  * PMAP_CONTEXT: update any thread-specific hardware context that
        !           114:  * is managed by pmap module.
        !           115:  */
        !           116: #define PMAP_CONTEXT(pmap, thread)
        !           117: 
        !           118: #define pmap_resident_count(pmap)      ((pmap)->stats.resident_count)
        !           119: #define pmap_phys_address(frame)       ((vm_offset_t) (i386_ptob(frame)))
        !           120: #define pmap_phys_to_frame(phys)       ((unsigned int) (i386_btop(phys)))
        !           121: #define pmap_phys_to_kern(phys)                ((phys) + VM_MIN_KERNEL_ADDRESS)
        !           122: 
        !           123: typedef enum {
        !           124:     cache_default,
        !           125:     cache_writethrough,
        !           126:     cache_disable
        !           127: } cache_spec_t;
        !           128: 
        !           129: extern inline
        !           130:     pt_entry_t *
        !           131:        pmap_pt_entry(
        !           132:                pmap_t          pmap,
        !           133:                vm_offset_t     va);
        !           134: 
        !           135: extern inline
        !           136:     pd_entry_t *
        !           137:        pmap_pd_entry(
        !           138:                pmap_t          pmap,
        !           139:                vm_offset_t     va);
        !           140: 
        !           141: extern inline
        !           142:     void
        !           143:        pmap_enter_cache_spec(
        !           144:                pmap_t          pmap,
        !           145:                vm_offset_t     va,
        !           146:                vm_offset_t     pa,
        !           147:                vm_prot_t       prot,
        !           148:                boolean_t       wired,
        !           149:                cache_spec_t    caching);
        !           150: 
        !           151: extern
        !           152:     void
        !           153:        pmap_enter_shared_range(
        !           154:                pmap_t          pmap,
        !           155:                vm_offset_t     va,
        !           156:                vm_size_t       size,
        !           157:                vm_offset_t     kern);

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.