osfmk/ipc/ipc_init.c

   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  * 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/kern_return.h>
  64 #include <kern/mach_param.h>
  65 #include <kern/ipc_host.h>
  66 #include <kern/misc_protos.h>
  67 #include <vm/vm_map.h>
  68 #include <vm/vm_kern.h>
  69 #include <ipc/ipc_entry.h>
  70 #include <ipc/ipc_space.h>
  71 #include <ipc/ipc_object.h>
  72 #include <ipc/ipc_port.h>
  73 #include <ipc/ipc_pset.h>
  74 #include <ipc/ipc_notify.h>
  75 #include <ipc/ipc_kmsg.h>
  76 #include <ipc/ipc_hash.h>
  77 #include <ipc/ipc_init.h>
  78 #include <mach/machine/ndr_def.h>   /* NDR_record */
  79
  80 vm_map_t ipc_kernel_map;
  81 vm_size_t ipc_kernel_map_size = 1024 * 1024;
  82
  83 vm_map_t ipc_kernel_copy_map;
  84 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
  85 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
  86 vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
  87
  88 int ipc_space_max = SPACE_MAX;
  89 int ipc_tree_entry_max = ITE_MAX;
  90 int ipc_port_max = PORT_MAX;
  91 int ipc_pset_max = SET_MAX;
  92
  93 extern void mig_init(void);
  94 extern void ikm_cache_init(void);
  95
  96 /*
  97  *      Routine:        ipc_bootstrap
  98  *      Purpose:
  99  *              Initialization needed before the kernel task
 100  *              can be created.
 101  */
 102
 103 void
 104 ipc_bootstrap(void)
 105 {
 106         kern_return_t kr;
 107
 108         ipc_port_multiple_lock_init();
 109
 110         ipc_port_timestamp_lock_init();
 111         ipc_port_timestamp_data = 0;
 112
 113         /* all IPC zones should be exhaustible */
 114
 115         ipc_space_zone = zinit(sizeof(struct ipc_space),
 116                                ipc_space_max * sizeof(struct ipc_space),
 117                                sizeof(struct ipc_space),
 118                                "ipc spaces");
 119 #if 0
 120         /* make it exhaustible */
 121         zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
 122 #endif
 123
 124         ipc_tree_entry_zone =
 125                 zinit(sizeof(struct ipc_tree_entry),
 126                         ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
 127                         sizeof(struct ipc_tree_entry),
 128                         "ipc tree entries");
 129 #if 0
 130         /* make it exhaustible */
 131         zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
 132 #endif
 133
 134         /*
 135          * populate all port(set) zones
 136          */
 137         ipc_object_zones[IOT_PORT] =
 138                 zinit(sizeof(struct ipc_port),
 139                       ipc_port_max * sizeof(struct ipc_port),
 140                       sizeof(struct ipc_port),
 141                       "ipc ports");
 142         /*
 143          * XXX  Can't make the port zone exhaustible because the kernel
 144          * XXX  panics when port allocation for an internal object fails.
 145          *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
 146          */
 147
 148         ipc_object_zones[IOT_PORT_SET] =
 149                 zinit(sizeof(struct ipc_pset),
 150                       ipc_pset_max * sizeof(struct ipc_pset),
 151                       sizeof(struct ipc_pset),
 152                       "ipc port sets");
 153         /* make it exhaustible */
 154         zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
 155
 156         /* create special spaces */
 157
 158         kr = ipc_space_create_special(&ipc_space_kernel);
 159         assert(kr == KERN_SUCCESS);
 160
 161
 162         kr = ipc_space_create_special(&ipc_space_reply);
 163         assert(kr == KERN_SUCCESS);
 164
 165         /* initialize modules with hidden data structures */
 166
 167 #if     MACH_ASSERT
 168         ipc_port_debug_init();
 169 #endif
 170         mig_init();
 171         ipc_table_init();
 172         ipc_notify_init();
 173         ipc_hash_init();
 174         ipc_kmsg_init();
 175         semaphore_init();
 176         lock_set_init();
 177 }
 178
 179 /*
 180  * XXX tunable, belongs in mach.message.h
 181  */
 182 #define MSG_OOL_SIZE_SMALL_MAX 4096
 183 vm_size_t msg_ool_size_small;
 184
 185 /*
 186  *      Routine:        ipc_init
 187  *      Purpose:
 188  *              Final initialization of the IPC system.
 189  */
 190
 191 void
 192 ipc_init(void)
 193 {
 194         kern_return_t retval;
 195         vm_offset_t min, max;
 196         extern vm_size_t kalloc_max_prerounded;
 197
 198         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_map_size,
 199                                TRUE, TRUE, &ipc_kernel_map);
 200         if (retval != KERN_SUCCESS)
 201                 panic("ipc_init: kmem_suballoc of ipc_kernel_map failed");
 202
 203         retval = kmem_suballoc(kernel_map, &min, ipc_kernel_copy_map_size,
 204                                TRUE, TRUE, &ipc_kernel_copy_map);
 205         if (retval != KERN_SUCCESS)
 206                 panic("ipc_init: kmem_suballoc of ipc_kernel_copy_map failed");
 207
 208         ipc_kernel_copy_map->no_zero_fill = TRUE;
 209         ipc_kernel_copy_map->wait_for_space = TRUE;
 210
 211         /*
 212          * As an optimization, 'small' out of line data regions using a
 213          * physical copy strategy are copied into kalloc'ed buffers.
 214          * The value of 'small' is determined here.  Requests kalloc()
 215          * with sizes greater or equal to kalloc_max_prerounded may fail.
 216          */
 217         if (kalloc_max_prerounded <=  MSG_OOL_SIZE_SMALL_MAX) {
 218                 msg_ool_size_small = kalloc_max_prerounded;
 219         }
 220         else {
 221                 msg_ool_size_small = MSG_OOL_SIZE_SMALL_MAX;
 222         }
 223
 224         ipc_host_init();
 225 }