osfmk/ipc/ipc_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
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  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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  23  * Please see the License for the specific language governing rights and
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  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31 /*
  32  * Mach Operating System
  33  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  34  * All Rights Reserved.
  35  *
  36  * Permission to use, copy, modify and distribute this software and its
  37  * documentation is hereby granted, provided that both the copyright
  38  * notice and this permission notice appear in all copies of the
  39  * software, derivative works or modified versions, and any portions
  40  * thereof, and that both notices appear in supporting documentation.
  41  *
  42  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  43  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  44  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  45  *
  46  * Carnegie Mellon requests users of this software to return to
  47  *
  48  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  49  *  School of Computer Science
  50  *  Carnegie Mellon University
  51  *  Pittsburgh PA 15213-3890
  52  *
  53  * any improvements or extensions that they make and grant Carnegie Mellon
  54  * the rights to redistribute these changes.
  55  */
  56 /*
  57  */
  58 /*
  59  *      File:   ipc/ipc_init.c
  60  *      Author: Rich Draves
  61  *      Date:   1989
  62  *
  63  *      Functions to initialize the IPC system.
  64  */
  65
  66 #include <mach_debug.h>
  67 #include <mach_rt.h>
  68
  69 #include <mach/port.h>
  70 #include <mach/kern_return.h>
  71
  72 #include <kern/kern_types.h>
  73 #include <kern/kalloc.h>
  74 #include <kern/mach_param.h>
  75 #include <kern/ipc_host.h>
  76 #include <kern/ipc_mig.h>
  77 #include <kern/host_notify.h>
  78 #include <kern/mk_timer.h>
  79 #include <kern/misc_protos.h>
  80 #include <kern/sync_lock.h>
  81 #include <kern/sync_sema.h>
  82 #include <vm/vm_map.h>
  83 #include <vm/vm_kern.h>
  84
  85 #include <ipc/ipc_entry.h>
  86 #include <ipc/ipc_space.h>
  87 #include <ipc/ipc_object.h>
  88 #include <ipc/ipc_port.h>
  89 #include <ipc/ipc_pset.h>
  90 #include <ipc/ipc_notify.h>
  91 #include <ipc/ipc_kmsg.h>
  92 #include <ipc/ipc_hash.h>
  93 #include <ipc/ipc_init.h>
  94 #include <ipc/ipc_table.h>
  95
  96 #include <mach/machine/ndr_def.h>   /* NDR_record */
  97
  98 vm_map_t ipc_kernel_map;
  99 vm_size_t ipc_kernel_map_size = 1024 * 1024;
 100
 101 vm_map_t ipc_kernel_copy_map;
 102 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
 103 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
 104 vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
 105
 106 int ipc_space_max = SPACE_MAX;
 107 int ipc_tree_entry_max = ITE_MAX;
 108 int ipc_port_max = PORT_MAX;
 109 int ipc_pset_max = SET_MAX;
 110
 111 extern void ikm_cache_init(void);
 112
 113 /*
 114  *      Routine:        ipc_bootstrap
 115  *      Purpose:
 116  *              Initialization needed before the kernel task
 117  *              can be created.
 118  */
 119
 120 void
 121 ipc_bootstrap(void)
 122 {
 123         kern_return_t kr;
 124
 125         ipc_port_multiple_lock_init();
 126
 127         ipc_port_timestamp_lock_init();
 128         ipc_port_timestamp_data = 0;
 129
 130         /* all IPC zones should be exhaustible */
 131
 132         ipc_space_zone = zinit(sizeof(struct ipc_space),
 133                                ipc_space_max * sizeof(struct ipc_space),
 134                                sizeof(struct ipc_space),
 135                                "ipc spaces");
 136 #if 0
 137         /* make it exhaustible */
 138         zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
 139 #endif
 140
 141         ipc_tree_entry_zone =
 142                 zinit(sizeof(struct ipc_tree_entry),
 143                         ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
 144                         sizeof(struct ipc_tree_entry),
 145                         "ipc tree entries");
 146 #if 0
 147         /* make it exhaustible */
 148         zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
 149 #endif
 150
 151         /*
 152          * populate all port(set) zones
 153          */
 154         ipc_object_zones[IOT_PORT] =
 155                 zinit(sizeof(struct ipc_port),
 156                       ipc_port_max * sizeof(struct ipc_port),
 157                       sizeof(struct ipc_port),
 158                       "ipc ports");
 159         /*
 160          * XXX  Can't make the port zone exhaustible because the kernel
 161          * XXX  panics when port allocation for an internal object fails.
 162          *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
 163          */
 164
 165         ipc_object_zones[IOT_PORT_SET] =
 166                 zinit(sizeof(struct ipc_pset),
 167                       ipc_pset_max * sizeof(struct ipc_pset),
 168                       sizeof(struct ipc_pset),
 169                       "ipc port sets");
 170         /* make it exhaustible */
 171         zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
 172
 173         /*
 174          * Create the basic ipc_kmsg_t zone (the one we also cache)
 175          * elements at the processor-level to avoid the locking.
 176          */
 177         ipc_kmsg_zone = zinit(IKM_SAVED_KMSG_SIZE,
 178                               ipc_port_max * MACH_PORT_QLIMIT_MAX *
 179                               IKM_SAVED_KMSG_SIZE,
 180                               IKM_SAVED_KMSG_SIZE,
 181                               "ipc kmsgs");
 182
 183         /* create special spaces */
 184
 185         kr = ipc_space_create_special(&ipc_space_kernel);
 186         assert(kr == KERN_SUCCESS);
 187
 188
 189         kr = ipc_space_create_special(&ipc_space_reply);
 190         assert(kr == KERN_SUCCESS);
 191
 192         /* initialize modules with hidden data structures */
 193
 194 #if     MACH_ASSERT
 195         ipc_port_debug_init();
 196 #endif
 197         mig_init();
 198         ipc_table_init();
 199         ipc_hash_init();
 200         semaphore_init();
 201         lock_set_init();
 202         mk_timer_init();
 203         host_notify_init();
 204 }
 205
 206 /*
 207  * XXX tunable, belongs in mach.message.h
 208  */
 209 #define MSG_OOL_SIZE_SMALL_MAX 4096
 210 vm_size_t msg_ool_size_small;
 211
 212 /*
 213  *      Routine:        ipc_init
 214  *      Purpose:
 215  *              Final initialization of the IPC system.
 216  */
 217
 218 void
 219 ipc_init(void)
 220 {
 221         kern_return_t retval;
 222         vm_offset_t min;
 223
 224         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
 225                                TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_map);
 226
 227         if (retval != KERN_SUCCESS)
 228                 panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 229
 230         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
 231                                TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_copy_map);
 232
 233         if (retval != KERN_SUCCESS)
 234                 panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
 235
 236         ipc_kernel_copy_map->no_zero_fill = TRUE;
 237         ipc_kernel_copy_map->wait_for_space = TRUE;
 238
 239         /*
 240          * As an optimization, 'small' out of line data regions using a
 241          * physical copy strategy are copied into kalloc'ed buffers.
 242          * The value of 'small' is determined here.  Requests kalloc()
 243          * with sizes greater or equal to kalloc_max_prerounded may fail.
 244          */
 245         if (kalloc_max_prerounded <=  MSG_OOL_SIZE_SMALL_MAX) {
 246                 msg_ool_size_small = kalloc_max_prerounded;
 247         }
 248         else {
 249                 msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
 250         }
 251
 252         ipc_host_init();
 253 }