osfmk/ipc/ipc_init.c

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  */
  26 /*
  27  * Mach Operating System
  28  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  29  * All Rights Reserved.
  30  *
  31  * Permission to use, copy, modify and distribute this software and its
  32  * documentation is hereby granted, provided that both the copyright
  33  * notice and this permission notice appear in all copies of the
  34  * software, derivative works or modified versions, and any portions
  35  * thereof, and that both notices appear in supporting documentation.
  36  *
  37  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  38  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  39  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  40  *
  41  * Carnegie Mellon requests users of this software to return to
  42  *
  43  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  44  *  School of Computer Science
  45  *  Carnegie Mellon University
  46  *  Pittsburgh PA 15213-3890
  47  *
  48  * any improvements or extensions that they make and grant Carnegie Mellon
  49  * the rights to redistribute these changes.
  50  */
  51 /*
  52  */
  53 /*
  54  *      File:   ipc/ipc_init.c
  55  *      Author: Rich Draves
  56  *      Date:   1989
  57  *
  58  *      Functions to initialize the IPC system.
  59  */
  60
  61 #include <mach_debug.h>
  62 #include <mach_rt.h>
  63
  64 #include <mach/port.h>
  65 #include <mach/kern_return.h>
  66
  67 #include <kern/kern_types.h>
  68 #include <kern/kalloc.h>
  69 #include <kern/mach_param.h>
  70 #include <kern/ipc_host.h>
  71 #include <kern/ipc_mig.h>
  72 #include <kern/host_notify.h>
  73 #include <kern/mk_timer.h>
  74 #include <kern/misc_protos.h>
  75 #include <kern/sync_lock.h>
  76 #include <kern/sync_sema.h>
  77 #include <vm/vm_map.h>
  78 #include <vm/vm_kern.h>
  79
  80 #include <ipc/ipc_entry.h>
  81 #include <ipc/ipc_space.h>
  82 #include <ipc/ipc_object.h>
  83 #include <ipc/ipc_port.h>
  84 #include <ipc/ipc_pset.h>
  85 #include <ipc/ipc_notify.h>
  86 #include <ipc/ipc_kmsg.h>
  87 #include <ipc/ipc_hash.h>
  88 #include <ipc/ipc_init.h>
  89 #include <ipc/ipc_table.h>
  90
  91 #include <mach/machine/ndr_def.h>   /* NDR_record */
  92
  93 vm_map_t ipc_kernel_map;
  94 vm_size_t ipc_kernel_map_size = 1024 * 1024;
  95
  96 vm_map_t ipc_kernel_copy_map;
  97 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
  98 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
  99 vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
 100
 101 int ipc_space_max = SPACE_MAX;
 102 int ipc_tree_entry_max = ITE_MAX;
 103 int ipc_port_max = PORT_MAX;
 104 int ipc_pset_max = SET_MAX;
 105
 106 extern void ikm_cache_init(void);
 107
 108 /*
 109  *      Routine:        ipc_bootstrap
 110  *      Purpose:
 111  *              Initialization needed before the kernel task
 112  *              can be created.
 113  */
 114
 115 void
 116 ipc_bootstrap(void)
 117 {
 118         kern_return_t kr;
 119
 120         ipc_port_multiple_lock_init();
 121
 122         ipc_port_timestamp_lock_init();
 123         ipc_port_timestamp_data = 0;
 124
 125         /* all IPC zones should be exhaustible */
 126
 127         ipc_space_zone = zinit(sizeof(struct ipc_space),
 128                                ipc_space_max * sizeof(struct ipc_space),
 129                                sizeof(struct ipc_space),
 130                                "ipc spaces");
 131 #if 0
 132         /* make it exhaustible */
 133         zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
 134 #endif
 135
 136         ipc_tree_entry_zone =
 137                 zinit(sizeof(struct ipc_tree_entry),
 138                         ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
 139                         sizeof(struct ipc_tree_entry),
 140                         "ipc tree entries");
 141 #if 0
 142         /* make it exhaustible */
 143         zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
 144 #endif
 145
 146         /*
 147          * populate all port(set) zones
 148          */
 149         ipc_object_zones[IOT_PORT] =
 150                 zinit(sizeof(struct ipc_port),
 151                       ipc_port_max * sizeof(struct ipc_port),
 152                       sizeof(struct ipc_port),
 153                       "ipc ports");
 154         /*
 155          * XXX  Can't make the port zone exhaustible because the kernel
 156          * XXX  panics when port allocation for an internal object fails.
 157          *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
 158          */
 159
 160         ipc_object_zones[IOT_PORT_SET] =
 161                 zinit(sizeof(struct ipc_pset),
 162                       ipc_pset_max * sizeof(struct ipc_pset),
 163                       sizeof(struct ipc_pset),
 164                       "ipc port sets");
 165         /* make it exhaustible */
 166         zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
 167
 168         /*
 169          * Create the basic ipc_kmsg_t zone (the one we also cache)
 170          * elements at the processor-level to avoid the locking.
 171          */
 172         ipc_kmsg_zone = zinit(IKM_SAVED_KMSG_SIZE,
 173                               ipc_port_max * MACH_PORT_QLIMIT_MAX *
 174                               IKM_SAVED_KMSG_SIZE,
 175                               IKM_SAVED_KMSG_SIZE,
 176                               "ipc kmsgs");
 177
 178         /* create special spaces */
 179
 180         kr = ipc_space_create_special(&ipc_space_kernel);
 181         assert(kr == KERN_SUCCESS);
 182
 183
 184         kr = ipc_space_create_special(&ipc_space_reply);
 185         assert(kr == KERN_SUCCESS);
 186
 187         /* initialize modules with hidden data structures */
 188
 189 #if     MACH_ASSERT
 190         ipc_port_debug_init();
 191 #endif
 192         mig_init();
 193         ipc_table_init();
 194         ipc_hash_init();
 195         semaphore_init();
 196         lock_set_init();
 197         mk_timer_init();
 198         host_notify_init();
 199 }
 200
 201 /*
 202  * XXX tunable, belongs in mach.message.h
 203  */
 204 #define MSG_OOL_SIZE_SMALL_MAX 4096
 205 vm_size_t msg_ool_size_small;
 206
 207 /*
 208  *      Routine:        ipc_init
 209  *      Purpose:
 210  *              Final initialization of the IPC system.
 211  */
 212
 213 void
 214 ipc_init(void)
 215 {
 216         kern_return_t retval;
 217         vm_offset_t min;
 218
 219         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
 220                                TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_map);
 221
 222         if (retval != KERN_SUCCESS)
 223                 panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 224
 225         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
 226                                TRUE, VM_FLAGS_ANYWHERE, &ipc_kernel_copy_map);
 227
 228         if (retval != KERN_SUCCESS)
 229                 panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
 230
 231         ipc_kernel_copy_map->no_zero_fill = TRUE;
 232         ipc_kernel_copy_map->wait_for_space = TRUE;
 233
 234         /*
 235          * As an optimization, 'small' out of line data regions using a
 236          * physical copy strategy are copied into kalloc'ed buffers.
 237          * The value of 'small' is determined here.  Requests kalloc()
 238          * with sizes greater or equal to kalloc_max_prerounded may fail.
 239          */
 240         if (kalloc_max_prerounded <=  MSG_OOL_SIZE_SMALL_MAX) {
 241                 msg_ool_size_small = kalloc_max_prerounded;
 242         }
 243         else {
 244                 msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
 245         }
 246
 247         ipc_host_init();
 248 }