osfmk/ipc/ipc_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   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
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  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.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28 /*
  29  * Mach Operating System
  30  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  31  * All Rights Reserved.
  32  *
  33  * Permission to use, copy, modify and distribute this software and its
  34  * documentation is hereby granted, provided that both the copyright
  35  * notice and this permission notice appear in all copies of the
  36  * software, derivative works or modified versions, and any portions
  37  * thereof, and that both notices appear in supporting documentation.
  38  *
  39  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  40  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  41  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  42  *
  43  * Carnegie Mellon requests users of this software to return to
  44  *
  45  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  46  *  School of Computer Science
  47  *  Carnegie Mellon University
  48  *  Pittsburgh PA 15213-3890
  49  *
  50  * any improvements or extensions that they make and grant Carnegie Mellon
  51  * the rights to redistribute these changes.
  52  */
  53 /*
  54  */
  55 /*
  56  *      File:   ipc/ipc_init.c
  57  *      Author: Rich Draves
  58  *      Date:   1989
  59  *
  60  *      Functions to initialize the IPC system.
  61  */
  62
  63 #include <mach_debug.h>
  64 #include <mach_rt.h>
  65
  66 #include <mach/kern_return.h>
  67 #include <kern/mach_param.h>
  68 #include <kern/ipc_host.h>
  69 #include <kern/misc_protos.h>
  70 #include <vm/vm_map.h>
  71 #include <vm/vm_kern.h>
  72 #include <ipc/ipc_entry.h>
  73 #include <ipc/ipc_space.h>
  74 #include <ipc/ipc_object.h>
  75 #include <ipc/ipc_port.h>
  76 #include <ipc/ipc_pset.h>
  77 #include <ipc/ipc_notify.h>
  78 #include <ipc/ipc_kmsg.h>
  79 #include <ipc/ipc_hash.h>
  80 #include <ipc/ipc_init.h>
  81 #include <mach/machine/ndr_def.h>   /* NDR_record */
  82
  83 vm_map_t ipc_kernel_map;
  84 vm_size_t ipc_kernel_map_size = 1024 * 1024;
  85
  86 vm_map_t ipc_kernel_copy_map;
  87 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
  88 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
  89 vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
  90
  91 int ipc_space_max = SPACE_MAX;
  92 int ipc_tree_entry_max = ITE_MAX;
  93 int ipc_port_max = PORT_MAX;
  94 int ipc_pset_max = SET_MAX;
  95
  96 extern void mig_init(void);
  97 extern void ikm_cache_init(void);
  98
  99 /*
 100  *      Routine:        ipc_bootstrap
 101  *      Purpose:
 102  *              Initialization needed before the kernel task
 103  *              can be created.
 104  */
 105
 106 void
 107 ipc_bootstrap(void)
 108 {
 109         kern_return_t kr;
 110
 111         ipc_port_multiple_lock_init();
 112
 113         ipc_port_timestamp_lock_init();
 114         ipc_port_timestamp_data = 0;
 115
 116         /* all IPC zones should be exhaustible */
 117
 118         ipc_space_zone = zinit(sizeof(struct ipc_space),
 119                                ipc_space_max * sizeof(struct ipc_space),
 120                                sizeof(struct ipc_space),
 121                                "ipc spaces");
 122 #if 0
 123         /* make it exhaustible */
 124         zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
 125 #endif
 126
 127         ipc_tree_entry_zone =
 128                 zinit(sizeof(struct ipc_tree_entry),
 129                         ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
 130                         sizeof(struct ipc_tree_entry),
 131                         "ipc tree entries");
 132 #if 0
 133         /* make it exhaustible */
 134         zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
 135 #endif
 136
 137         /*
 138          * populate all port(set) zones
 139          */
 140         ipc_object_zones[IOT_PORT] =
 141                 zinit(sizeof(struct ipc_port),
 142                       ipc_port_max * sizeof(struct ipc_port),
 143                       sizeof(struct ipc_port),
 144                       "ipc ports");
 145         /*
 146          * XXX  Can't make the port zone exhaustible because the kernel
 147          * XXX  panics when port allocation for an internal object fails.
 148          *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
 149          */
 150
 151         ipc_object_zones[IOT_PORT_SET] =
 152                 zinit(sizeof(struct ipc_pset),
 153                       ipc_pset_max * sizeof(struct ipc_pset),
 154                       sizeof(struct ipc_pset),
 155                       "ipc port sets");
 156         /* make it exhaustible */
 157         zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
 158
 159         /* create special spaces */
 160
 161         kr = ipc_space_create_special(&ipc_space_kernel);
 162         assert(kr == KERN_SUCCESS);
 163
 164
 165         kr = ipc_space_create_special(&ipc_space_reply);
 166         assert(kr == KERN_SUCCESS);
 167
 168         /* initialize modules with hidden data structures */
 169
 170 #if     MACH_ASSERT
 171         ipc_port_debug_init();
 172 #endif
 173         mig_init();
 174         ipc_table_init();
 175         ipc_notify_init();
 176         ipc_hash_init();
 177         ipc_kmsg_init();
 178         semaphore_init();
 179         lock_set_init();
 180 }
 181
 182 /*
 183  * XXX tunable, belongs in mach.message.h
 184  */
 185 #define MSG_OOL_SIZE_SMALL_MAX 4096
 186 vm_size_t msg_ool_size_small;
 187
 188 /*
 189  *      Routine:        ipc_init
 190  *      Purpose:
 191  *              Final initialization of the IPC system.
 192  */
 193
 194 void
 195 ipc_init(void)
 196 {
 197         kern_return_t retval;
 198         vm_offset_t min, max;
 199         extern vm_size_t kalloc_max_prerounded;
 200
 201         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
 202                                TRUE, TRUE, &ipc_kernel_map);
 203         if (retval != KERN_SUCCESS)
 204                 panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 205
 206         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
 207                                TRUE, TRUE, &ipc_kernel_copy_map);
 208         if (retval != KERN_SUCCESS)
 209                 panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
 210
 211         ipc_kernel_copy_map->no_zero_fill = TRUE;
 212         ipc_kernel_copy_map->wait_for_space = TRUE;
 213
 214         /*
 215          * As an optimization, 'small' out of line data regions using a
 216          * physical copy strategy are copied into kalloc'ed buffers.
 217          * The value of 'small' is determined here.  Requests kalloc()
 218          * with sizes greater or equal to kalloc_max_prerounded may fail.
 219          */
 220         if (kalloc_max_prerounded <=  MSG_OOL_SIZE_SMALL_MAX) {
 221                 msg_ool_size_small = kalloc_max_prerounded;
 222         }
 223         else {
 224                 msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
 225         }
 226
 227         ipc_host_init();
 228 }