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