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/host_notify.h>
  67 #include <kern/mk_timer.h>
  68 #include <kern/misc_protos.h>
  69 #include <vm/vm_map.h>
  70 #include <vm/vm_kern.h>
  71 #include <ipc/ipc_entry.h>
  72 #include <ipc/ipc_space.h>
  73 #include <ipc/ipc_object.h>
  74 #include <ipc/ipc_port.h>
  75 #include <ipc/ipc_pset.h>
  76 #include <ipc/ipc_notify.h>
  77 #include <ipc/ipc_kmsg.h>
  78 #include <ipc/ipc_hash.h>
  79 #include <ipc/ipc_init.h>
  80 #include <mach/machine/ndr_def.h>   /* NDR_record */
  81
  82 vm_map_t ipc_kernel_map;
  83 vm_size_t ipc_kernel_map_size = 1024 * 1024;
  84
  85 vm_map_t ipc_kernel_copy_map;
  86 #define IPC_KERNEL_COPY_MAP_SIZE (8 * 1024 * 1024)
  87 vm_size_t ipc_kernel_copy_map_size = IPC_KERNEL_COPY_MAP_SIZE;
  88 vm_size_t ipc_kmsg_max_vm_space = (IPC_KERNEL_COPY_MAP_SIZE * 7)/8;
  89
  90 int ipc_space_max = SPACE_MAX;
  91 int ipc_tree_entry_max = ITE_MAX;
  92 int ipc_port_max = PORT_MAX;
  93 int ipc_pset_max = SET_MAX;
  94
  95 extern void mig_init(void);
  96 extern void ikm_cache_init(void);
  97
  98 /*
  99  *      Routine:        ipc_bootstrap
 100  *      Purpose:
 101  *              Initialization needed before the kernel task
 102  *              can be created.
 103  */
 104
 105 void
 106 ipc_bootstrap(void)
 107 {
 108         kern_return_t kr;
 109
 110         ipc_port_multiple_lock_init();
 111
 112         ipc_port_timestamp_lock_init();
 113         ipc_port_timestamp_data = 0;
 114
 115         /* all IPC zones should be exhaustible */
 116
 117         ipc_space_zone = zinit(sizeof(struct ipc_space),
 118                                ipc_space_max * sizeof(struct ipc_space),
 119                                sizeof(struct ipc_space),
 120                                "ipc spaces");
 121 #if 0
 122         /* make it exhaustible */
 123         zone_change(ipc_space_zone, Z_EXHAUST, TRUE);
 124 #endif
 125
 126         ipc_tree_entry_zone =
 127                 zinit(sizeof(struct ipc_tree_entry),
 128                         ipc_tree_entry_max * sizeof(struct ipc_tree_entry),
 129                         sizeof(struct ipc_tree_entry),
 130                         "ipc tree entries");
 131 #if 0
 132         /* make it exhaustible */
 133         zone_change(ipc_tree_entry_zone, Z_EXHAUST, TRUE);
 134 #endif
 135
 136         /*
 137          * populate all port(set) zones
 138          */
 139         ipc_object_zones[IOT_PORT] =
 140                 zinit(sizeof(struct ipc_port),
 141                       ipc_port_max * sizeof(struct ipc_port),
 142                       sizeof(struct ipc_port),
 143                       "ipc ports");
 144         /*
 145          * XXX  Can't make the port zone exhaustible because the kernel
 146          * XXX  panics when port allocation for an internal object fails.
 147          *zone_change(ipc_object_zones[IOT_PORT], Z_EXHAUST, TRUE);
 148          */
 149
 150         ipc_object_zones[IOT_PORT_SET] =
 151                 zinit(sizeof(struct ipc_pset),
 152                       ipc_pset_max * sizeof(struct ipc_pset),
 153                       sizeof(struct ipc_pset),
 154                       "ipc port sets");
 155         /* make it exhaustible */
 156         zone_change(ipc_object_zones[IOT_PORT_SET], Z_EXHAUST, TRUE);
 157
 158         /* create special spaces */
 159
 160         kr = ipc_space_create_special(&ipc_space_kernel);
 161         assert(kr == KERN_SUCCESS);
 162
 163
 164         kr = ipc_space_create_special(&ipc_space_reply);
 165         assert(kr == KERN_SUCCESS);
 166
 167         /* initialize modules with hidden data structures */
 168
 169 #if     MACH_ASSERT
 170         ipc_port_debug_init();
 171 #endif
 172         mig_init();
 173         ipc_table_init();
 174         ipc_hash_init();
 175         ipc_kmsg_init();
 176         semaphore_init();
 177         lock_set_init();
 178         mk_timer_init();
 179         host_notify_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 }