projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| de355530 A |
1 | /* |
| 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 43866e37 | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| de355530 | 7 | * |
| 43866e37 A |
8 | * This file contains Original Code and/or Modifications of Original Code |
| 9 | * as defined in and that are subject to the Apple Public Source License | |
| 10 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 11 | * compliance with the License. Please obtain a copy of the License at | |
| 12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 13 | * file. | |
| 14 | * | |
| 15 | * The Original Code and all software distributed under the License are | |
| 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| de355530 A |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 43866e37 A |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| 20 | * Please see the License for the specific language governing rights and | |
| 21 | * limitations under the License. | |
| de355530 A |
22 | * |
| 23 | * @APPLE_LICENSE_HEADER_END@ | |
| 24 | */ | |
| 25 | /* | |
| 26 | * @OSF_COPYRIGHT@ | |
| 27 | */ | |
| 28 | ||
| 29 | /* A marvelous selection of support routines for virtual memory */ | |
| 30 | ||
| 31 | #include <cpus.h> | |
| 32 | #include <debug.h> | |
| 33 | #include <mach_kdb.h> | |
| 34 | #include <mach_vm_debug.h> | |
| 35 | ||
| 36 | #include <kern/cpu_number.h> | |
| 37 | #include <kern/misc_protos.h> | |
| 38 | #include <kern/assert.h> | |
| 39 | #include <ppc/misc_protos.h> | |
| 40 | #include <ppc/mem.h> | |
| 41 | #include <ppc/pmap_internals.h> /* For pmap_pteg_overflow */ | |
| 42 | ||
| 43 | /* These refer to physical addresses and are set and referenced elsewhere */ | |
| 44 | ||
| 45 | unsigned int hash_table_base; | |
| 46 | unsigned int hash_table_size; | |
| 47 | ||
| 48 | unsigned int hash_function_mask; | |
| 49 | ||
| 50 | struct shadowBAT shadow_BAT; | |
| 51 | ||
| 52 | /* gather statistics about hash table usage */ | |
| 53 | ||
| 54 | #if DEBUG | |
| 55 | #define MEM_STATS 1 | |
| 56 | #else | |
| 57 | #define MEM_STATS 0 | |
| 58 | #endif /* DEBUG */ | |
| 59 | ||
| 60 | #if MEM_STATS | |
| 61 | /* hash table usage information */ | |
| 62 | struct hash_table_stats { | |
| 63 | int find_pte_in_pteg_calls; | |
| 64 | int find_pte_in_pteg_not_found; | |
| 65 | int find_pte_in_pteg_location[8]; | |
| 66 | struct find_or_alloc_calls { | |
| 67 | int found_primary; | |
| 68 | int found_secondary; | |
| 69 | int alloc_primary; | |
| 70 | int alloc_secondary; | |
| 71 | int overflow; | |
| 72 | int not_found; | |
| 73 | } find_or_alloc_calls[2]; | |
| 74 | ||
| 75 | } hash_table_stats[NCPUS]; | |
| 76 | ||
| 77 | #define INC_STAT(LOC) \ | |
| 78 | hash_table_stats[cpu_number()].find_pte_in_pteg_location[LOC]++ | |
| 79 | ||
| 80 | #else /* MEM_STATS */ | |
| 81 | #define INC_STAT(LOC) | |
| 82 | #endif /* MEM_STATS */ | |
| 83 | ||
| 84 | /* Set up the machine registers for the given hash table. | |
| 85 | * The table has already been zeroed. | |
| 86 | */ | |
| 87 | void hash_table_init(unsigned int base, unsigned int size) | |
| 88 | { | |
| 89 | sync(); /* SYNC: it's not just the law, it's a good idea... */ | |
| 90 | mtsdr1(hash_table_base | ((size-1)>>16)); /* Slam the SDR1 with the has table address */ | |
| 91 | sync(); /* SYNC: it's not just the law, it's a good idea... */ | |
| 92 | isync(); | |
| 93 | } | |
| 94 |