projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b A |
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 | * HISTORY | |
| 27 | * | |
| 28 | * Revision 1.1.1.1 1998/09/22 21:05:34 wsanchez | |
| 29 | * Import of Mac OS X kernel (~semeria) | |
| 30 | * | |
| 31 | * Revision 1.1.1.1 1998/03/07 02:25:54 wsanchez | |
| 32 | * Import of OSF Mach kernel (~mburg) | |
| 33 | * | |
| 34 | * Revision 1.1.6.1 1996/09/17 16:26:58 bruel | |
| 35 | * use standalone includes only | |
| 36 | * [1996/09/17 15:38:08 bruel] | |
| 37 | * | |
| 38 | * Revision 1.1.4.1 1996/02/02 12:16:40 emcmanus | |
| 39 | * Copied from nmk20b5_shared. | |
| 40 | * [1996/02/01 16:56:11 emcmanus] | |
| 41 | * | |
| 42 | * Revision 1.1.2.1 1995/12/30 17:12:07 emcmanus | |
| 43 | * Renamed from i386/etap_map.c and made this file machine-independent. | |
| 44 | * Delete declarations of event_table and subs_table, now declared with | |
| 45 | * different types in etap_macros.h. | |
| 46 | * [1995/12/30 17:03:55 emcmanus] | |
| 47 | * | |
| 48 | * Revision 1.1.2.4 1995/10/09 17:07:21 devrcs | |
| 49 | * Merged in RT3_SHARED ETAP code. | |
| 50 | * [1995/09/13 18:48:15 joe] | |
| 51 | * | |
| 52 | * Revision 1.1.2.3 1995/09/18 19:10:05 devrcs | |
| 53 | * Merged in RT3_SHARED ETAP code. | |
| 54 | * [1995/09/13 18:48:15 joe] | |
| 55 | * | |
| 56 | * Revision 1.1.2.2 1995/01/10 04:51:59 devrcs | |
| 57 | * mk6 CR801 - merge up from nmk18b4 to nmk18b7 | |
| 58 | * tweak signatures, a la osc1.3b26 | |
| 59 | * [1994/12/09 20:38:32 dwm] | |
| 60 | * | |
| 61 | * mk6 CR801 - new file for mk6_shared from cnmk_shared. | |
| 62 | * [1994/12/01 21:11:35 dwm] | |
| 63 | * | |
| 64 | * Revision 1.1.2.1 1994/10/21 18:35:57 joe | |
| 65 | * Initial ETAP submission | |
| 66 | * [1994/10/20 19:21:39 joe] | |
| 67 | * | |
| 68 | * $EndLog$ | |
| 69 | */ | |
| 70 | /* | |
| 71 | * File : etap_map.c | |
| 72 | * | |
| 73 | * Pseudo-device driver to calculate the virtual addresses | |
| 74 | * of all mappable ETAP buffers and tables: event table, | |
| 75 | * subsystem table, cumulative buffer and monitor buffers. | |
| 76 | * | |
| 77 | */ | |
| 78 | /* | |
| 79 | * Minor device number representation: | |
| 80 | * | |
| 81 | * 0 = ETAP_TABLE_EVENT | |
| 82 | * 1 = ETAP_TABLE_SUBSYSTEM | |
| 83 | * 2 = ETAP_BUFFER_CUMULATIVE | |
| 84 | * 3 & up = a specific monitor buffer | |
| 85 | * | |
| 86 | */ | |
| 87 | ||
| 88 | #include <types.h> | |
| 89 | ||
| 90 | #include <mach/vm_prot.h> | |
| 91 | #include <mach/vm_param.h> | |
| 92 | #include <mach/kern_return.h> | |
| 93 | #include <vm/pmap.h> | |
| 94 | #include <device/io_req.h> | |
| 95 | #include <device/dev_hdr.h> | |
| 96 | ||
| 97 | #include <cpus.h> | |
| 98 | #include <kern/etap_options.h> | |
| 99 | #include <mach/etap.h> | |
| 100 | #include <kern/etap_map.h> | |
| 101 | ||
| 102 | ||
| 103 | #if ETAP_LOCK_ACCUMULATE | |
| 104 | extern cumulative_buffer_t cbuff; | |
| 105 | #endif /* ETAP_LOCK_ACCUMULATE */ | |
| 106 | ||
| 107 | #if ETAP_MONITOR | |
| 108 | extern monitor_buffer_t mbuff[]; | |
| 109 | #endif /* ETAP_MONITOR */ | |
| 110 | ||
| 111 | ||
| 112 | /* | |
| 113 | * etap_map_open - Check for valid minor device | |
| 114 | */ | |
| 115 | ||
| 116 | io_return_t | |
| 117 | etap_map_open( | |
| 118 | dev_t dev, | |
| 119 | dev_mode_t flags, | |
| 120 | io_req_t ior) | |
| 121 | { | |
| 122 | int buffer = minor(dev); | |
| 123 | ||
| 124 | if (buffer >= ETAP_MAX_DEVICES) | |
| 125 | return(D_NO_SUCH_DEVICE); | |
| 126 | ||
| 127 | return(D_SUCCESS); | |
| 128 | } | |
| 129 | ||
| 130 | vm_offset_t | |
| 131 | etap_map_mmap ( | |
| 132 | dev_t dev, | |
| 133 | vm_offset_t off, | |
| 134 | vm_prot_t prot) | |
| 135 | { | |
| 136 | int buffer = minor(dev); | |
| 137 | vm_offset_t addr; | |
| 138 | ||
| 139 | /* | |
| 140 | * Check request validity | |
| 141 | */ | |
| 142 | ||
| 143 | if (prot & VM_PROT_WRITE) | |
| 144 | return(KERN_PROTECTION_FAILURE); | |
| 145 | ||
| 146 | if (buffer < 0 || buffer >= ETAP_MAX_DEVICES) | |
| 147 | return(KERN_INVALID_ARGUMENT); | |
| 148 | ||
| 149 | switch(buffer) { | |
| 150 | case ETAP_TABLE_EVENT : | |
| 151 | addr = trunc_page((char *) event_table) + off; | |
| 152 | break; | |
| 153 | case ETAP_TABLE_SUBSYSTEM : | |
| 154 | addr = trunc_page((char *) subs_table) + off; | |
| 155 | break; | |
| 156 | case ETAP_BUFFER_CUMULATIVE : | |
| 157 | #if ETAP_LOCK_ACCUMULATE | |
| 158 | addr = (vm_offset_t) cbuff + off; | |
| 159 | break; | |
| 160 | #else /* ETAP_LOCK_ACCUMULATE */ | |
| 161 | return(KERN_INVALID_ARGUMENT); | |
| 162 | #endif /* ETAP_LOCK_ACCUMULATE */ | |
| 163 | ||
| 164 | default : | |
| 165 | #if ETAP_MONITOR | |
| 166 | addr = (vm_offset_t) mbuff[buffer - 3] + off; | |
| 167 | break; | |
| 168 | #else /* ETAP_MONITOR */ | |
| 169 | return(KERN_INVALID_ARGUMENT); | |
| 170 | #endif /* ETAP_MONITOR */ | |
| 171 | ||
| 172 | } | |
| 173 | return machine_btop(pmap_extract(pmap_kernel(), addr)); | |
| 174 | } |