bsd/kern/kern_mib.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  * Copyright (c) 1982, 1986, 1989, 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * This code is derived from software contributed to Berkeley by
  27  * Mike Karels at Berkeley Software Design, Inc.
  28  *
  29  * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
  30  * project, to make these variables more userfriendly.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)kern_sysctl.c       8.4 (Berkeley) 4/14/94
  61  */
  62
  63 #include <sys/param.h>
  64 #include <sys/kernel.h>
  65 #include <sys/systm.h>
  66 #include <sys/sysctl.h>
  67 #include <sys/proc_internal.h>
  68 #include <sys/unistd.h>
  69
  70 #if defined(SMP)
  71 #include <machine/smp.h>
  72 #endif
  73
  74 #include <sys/param.h>  /* XXX prune includes */
  75 #include <sys/systm.h>
  76 #include <sys/kernel.h>
  77 #include <sys/malloc.h>
  78 #include <sys/proc.h>
  79 #include <sys/file_internal.h>
  80 #include <sys/vnode.h>
  81 #include <sys/unistd.h>
  82 #include <sys/ioctl.h>
  83 #include <sys/namei.h>
  84 #include <sys/tty.h>
  85 #include <sys/disklabel.h>
  86 #include <sys/vm.h>
  87 #include <sys/sysctl.h>
  88 #include <sys/user.h>
  89 #include <mach/machine.h>
  90 #include <mach/mach_types.h>
  91 #include <mach/vm_param.h>
  92 #include <kern/task.h>
  93 #include <vm/vm_kern.h>
  94 #include <mach/host_info.h>
  95
  96 extern vm_map_t bsd_pageable_map;
  97
  98 #include <sys/mount_internal.h>
  99 #include <sys/kdebug.h>
 100
 101 #include <IOKit/IOPlatformExpert.h>
 102 #include <pexpert/pexpert.h>
 103
 104 #include <machine/machine_routines.h>
 105 #include <machine/cpu_capabilities.h>
 106
 107 static int      cputype, cpusubtype, cputhreadtype;
 108
 109 SYSCTL_NODE(, 0,          sysctl, CTLFLAG_RW, 0,
 110         "Sysctl internal magic");
 111 SYSCTL_NODE(, CTL_KERN,   kern,   CTLFLAG_RW, 0,
 112         "High kernel, proc, limits &c");
 113 SYSCTL_NODE(, CTL_VM,     vm,     CTLFLAG_RW, 0,
 114         "Virtual memory");
 115 SYSCTL_NODE(, CTL_VFS,    vfs,     CTLFLAG_RW, 0,
 116         "File system");
 117 SYSCTL_NODE(, CTL_NET,    net,    CTLFLAG_RW, 0,
 118         "Network, (see socket.h)");
 119 SYSCTL_NODE(, CTL_DEBUG,  debug,  CTLFLAG_RW, 0,
 120         "Debugging");
 121 SYSCTL_NODE(, CTL_HW,     hw,     CTLFLAG_RW, 0,
 122         "hardware");
 123 SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
 124         "machine dependent");
 125 SYSCTL_NODE(, CTL_USER,   user,   CTLFLAG_RW, 0,
 126         "user-level");
 127
 128 #define SYSCTL_RETURN(r, x)     SYSCTL_OUT(r, &x, sizeof(x))
 129
 130 /******************************************************************************
 131  * hw.* MIB
 132  */
 133
 134 #define CTLHW_RETQUAD   (1 << 31)
 135 #define CTLHW_LOCAL     (1 << 30)
 136
 137 #define HW_LOCAL_CPUTHREADTYPE  (1 | CTLHW_LOCAL)
 138 #define HW_LOCAL_PHYSICALCPU    (2 | CTLHW_LOCAL)
 139 #define HW_LOCAL_PHYSICALCPUMAX (3 | CTLHW_LOCAL)
 140 #define HW_LOCAL_LOGICALCPU     (4 | CTLHW_LOCAL)
 141 #define HW_LOCAL_LOGICALCPUMAX  (5 | CTLHW_LOCAL)
 142
 143
 144 /*
 145  * Supporting some variables requires us to do "real" work.  We
 146  * gather some of that here.
 147  */
 148 static int
 149 sysctl_hw_generic SYSCTL_HANDLER_ARGS
 150 {
 151         char dummy[65];
 152         int  epochTemp;
 153         extern int vm_page_wire_count;
 154         ml_cpu_info_t cpu_info;
 155         int val, doquad;
 156         long long qval;
 157         host_basic_info_data_t hinfo;
 158         kern_return_t kret;
 159         int count = HOST_BASIC_INFO_COUNT;
 160
 161         /*
 162          * Test and mask off the 'return quad' flag.
 163          * Note that only some things here support it.
 164          */
 165         doquad = arg2 & CTLHW_RETQUAD;
 166         arg2 &= ~CTLHW_RETQUAD;
 167
 168         ml_cpu_get_info(&cpu_info);
 169
 170 #define BSD_HOST 1
 171         kret = host_info(BSD_HOST, HOST_BASIC_INFO, &hinfo, &count);
 172
 173         /*
 174          * Handle various OIDs.
 175          *
 176          * OIDs that can return int or quad set val and qval and then break.
 177          * Errors and int-only values return inline.
 178          */
 179         switch (arg2) {
 180         case HW_NCPU:
 181                 if (kret == KERN_SUCCESS) {
 182                         return(SYSCTL_RETURN(req, hinfo.max_cpus));
 183                 } else {
 184                         return(EINVAL);
 185                 }
 186         case HW_AVAILCPU:
 187                 if (kret == KERN_SUCCESS) {
 188                         return(SYSCTL_RETURN(req, hinfo.avail_cpus));
 189                 } else {
 190                         return(EINVAL);
 191                 }
 192         case HW_LOCAL_PHYSICALCPU:
 193                 if (kret == KERN_SUCCESS) {
 194                         return(SYSCTL_RETURN(req, hinfo.physical_cpu));
 195                 } else {
 196                         return(EINVAL);
 197                 }
 198         case HW_LOCAL_PHYSICALCPUMAX:
 199                 if (kret == KERN_SUCCESS) {
 200                         return(SYSCTL_RETURN(req, hinfo.physical_cpu_max));
 201                 } else {
 202                         return(EINVAL);
 203                 }
 204         case HW_LOCAL_LOGICALCPU:
 205                 if (kret == KERN_SUCCESS) {
 206                         return(SYSCTL_RETURN(req, hinfo.logical_cpu));
 207                 } else {
 208                         return(EINVAL);
 209                 }
 210         case HW_LOCAL_LOGICALCPUMAX:
 211                 if (kret == KERN_SUCCESS) {
 212                         return(SYSCTL_RETURN(req, hinfo.logical_cpu_max));
 213                 } else {
 214                         return(EINVAL);
 215                 }
 216         case HW_CACHELINE:
 217                 val = cpu_info.cache_line_size;
 218                 qval = (long long)val;
 219                 break;
 220         case HW_L1ICACHESIZE:
 221                 val = cpu_info.l1_icache_size;
 222                 qval = (long long)val;
 223                 break;
 224         case HW_L1DCACHESIZE:
 225                 val = cpu_info.l1_dcache_size;
 226                 qval = (long long)val;
 227                 break;
 228         case HW_L2CACHESIZE:
 229                 if (cpu_info.l2_cache_size == 0xFFFFFFFF)
 230                         return(EINVAL);
 231                 val = cpu_info.l2_cache_size;
 232                 qval = (long long)val;
 233                 break;
 234         case HW_L3CACHESIZE:
 235                 if (cpu_info.l3_cache_size == 0xFFFFFFFF)
 236                         return(EINVAL);
 237                 val = cpu_info.l3_cache_size;
 238                 qval = (long long)val;
 239                 break;
 240
 241                 /*
 242                  * Deprecated variables.  We still support these for
 243                  * backwards compatibility purposes only.
 244                  */
 245         case HW_MACHINE:
 246                 bzero(dummy, sizeof(dummy));
 247                 if(!PEGetMachineName(dummy,64))
 248                         return(EINVAL);
 249                 dummy[64] = 0;
 250                 return(SYSCTL_OUT(req, dummy, strlen(dummy) + 1));
 251         case HW_MODEL:
 252                 bzero(dummy, sizeof(dummy));
 253                 if(!PEGetModelName(dummy,64))
 254                         return(EINVAL);
 255                 dummy[64] = 0;
 256                 return(SYSCTL_OUT(req, dummy, strlen(dummy) + 1));
 257         case HW_USERMEM:
 258                 {
 259                 int usermem = mem_size - vm_page_wire_count * page_size;
 260
 261                         return(SYSCTL_RETURN(req, usermem));
 262                 }
 263         case HW_EPOCH:
 264                 epochTemp = PEGetPlatformEpoch();
 265                 if (epochTemp == -1)
 266                         return(EINVAL);
 267                 return(SYSCTL_RETURN(req, epochTemp));
 268         case HW_VECTORUNIT:
 269                 return(SYSCTL_RETURN(req, cpu_info.vector_unit));
 270         case HW_L2SETTINGS:
 271                 if (cpu_info.l2_cache_size == 0xFFFFFFFF)
 272                         return(EINVAL);
 273                 return(SYSCTL_RETURN(req, cpu_info.l2_settings));
 274         case HW_L3SETTINGS:
 275                 if (cpu_info.l3_cache_size == 0xFFFFFFFF)
 276                         return(EINVAL);
 277                 return(SYSCTL_RETURN(req, cpu_info.l3_settings));
 278         default:
 279                 return(ENOTSUP);
 280         }
 281         /*
 282          * Callers may come to us with either int or quad buffers.
 283          */
 284         if (doquad) {
 285                 return(SYSCTL_RETURN(req, qval));
 286         }
 287         return(SYSCTL_RETURN(req, val));
 288 }
 289
 290 /*
 291  * hw.* MIB variables.
 292  */
 293 SYSCTL_PROC    (_hw, HW_NCPU, ncpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_NCPU, sysctl_hw_generic, "I", "");
 294 SYSCTL_PROC    (_hw, HW_AVAILCPU, activecpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_AVAILCPU, sysctl_hw_generic, "I", "");
 295 SYSCTL_PROC    (_hw, OID_AUTO, physicalcpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_LOCAL_PHYSICALCPU, sysctl_hw_generic, "I", "");
 296 SYSCTL_PROC    (_hw, OID_AUTO, physicalcpu_max, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_LOCAL_PHYSICALCPUMAX, sysctl_hw_generic, "I", "");
 297 SYSCTL_PROC    (_hw, OID_AUTO, logicalcpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_LOCAL_LOGICALCPU, sysctl_hw_generic, "I", "");
 298 SYSCTL_PROC    (_hw, OID_AUTO, logicalcpu_max, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_LOCAL_LOGICALCPUMAX, sysctl_hw_generic, "I", "");
 299 SYSCTL_INT     (_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD | CTLFLAG_KERN, NULL, BYTE_ORDER, "");
 300 SYSCTL_INT     (_hw, OID_AUTO, cputype, CTLFLAG_RD | CTLFLAG_KERN, &cputype, 0, "");
 301 SYSCTL_INT     (_hw, OID_AUTO, cpusubtype, CTLFLAG_RD | CTLFLAG_KERN, &cpusubtype, 0, "");
 302 SYSCTL_INT2QUAD(_hw, OID_AUTO, pagesize, CTLFLAG_RD | CTLFLAG_KERN, &page_size, "");
 303 SYSCTL_QUAD    (_hw, OID_AUTO, busfrequency, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.bus_frequency_hz, "");
 304 SYSCTL_QUAD    (_hw, OID_AUTO, busfrequency_min, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.bus_frequency_min_hz, "");
 305 SYSCTL_QUAD    (_hw, OID_AUTO, busfrequency_max, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.bus_frequency_max_hz, "");
 306 SYSCTL_QUAD    (_hw, OID_AUTO, cpufrequency, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.cpu_frequency_hz, "");
 307 SYSCTL_QUAD    (_hw, OID_AUTO, cpufrequency_min, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.cpu_frequency_min_hz, "");
 308 SYSCTL_QUAD    (_hw, OID_AUTO, cpufrequency_max, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.cpu_frequency_max_hz, "");
 309 SYSCTL_PROC    (_hw, OID_AUTO, cachelinesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_CACHELINE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 310 SYSCTL_PROC    (_hw, OID_AUTO, l1icachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_L1ICACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 311 SYSCTL_PROC    (_hw, OID_AUTO, l1dcachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_L1DCACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 312 SYSCTL_PROC    (_hw, OID_AUTO, l2cachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_L2CACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 313 SYSCTL_PROC    (_hw, OID_AUTO, l3cachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN, 0, HW_L3CACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 314 SYSCTL_INT2QUAD(_hw, OID_AUTO, tbfrequency, CTLFLAG_RD | CTLFLAG_KERN, &gPEClockFrequencyInfo.timebase_frequency_hz, "");
 315 SYSCTL_QUAD    (_hw, HW_MEMSIZE, memsize, CTLFLAG_RD | CTLFLAG_KERN, &max_mem, "");
 316
 317 /*
 318  * Optional features can register nodes below hw.optional.
 319  *
 320  * If the feature is not present, the node should either not be registered,
 321  * or it should return -1.  If the feature is present, the node should return
 322  * 0.  If the feature is present and its use is advised, the node should
 323  * return 1.
 324  */
 325 SYSCTL_NODE(_hw, OID_AUTO, optional, CTLFLAG_RW, NULL, "optional features");
 326
 327 SYSCTL_INT(_hw_optional, OID_AUTO, floatingpoint, CTLFLAG_RD | CTLFLAG_KERN, 0, 1, ""); /* always set */
 328
 329 /*
 330  * Deprecated variables.  These are supported for backwards compatibility
 331  * purposes only.  The MASKED flag requests that the variables not be
 332  * printed by sysctl(8) and similar utilities.
 333  *
 334  * The variables named *_compat here are int-sized versions of variables
 335  * that are now exported as quads.  The int-sized versions are normally
 336  * looked up only by number, wheras the quad-sized versions should be
 337  * looked up by name.
 338  *
 339  * The *_compat nodes are *NOT* visible within the kernel.
 340  */
 341 SYSCTL_INT (_hw, HW_PAGESIZE,     pagesize_compat, CTLFLAG_RD | CTLFLAG_MASKED, &page_size, 0, "");
 342 SYSCTL_INT (_hw, HW_BUS_FREQ,     busfrequency_compat, CTLFLAG_RD | CTLFLAG_MASKED, &gPEClockFrequencyInfo.bus_clock_rate_hz, 0, "");
 343 SYSCTL_INT (_hw, HW_CPU_FREQ,     cpufrequency_compat, CTLFLAG_RD | CTLFLAG_MASKED, &gPEClockFrequencyInfo.cpu_clock_rate_hz, 0, "");
 344 SYSCTL_PROC(_hw, HW_CACHELINE,    cachelinesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_CACHELINE, sysctl_hw_generic, "I", "");
 345 SYSCTL_PROC(_hw, HW_L1ICACHESIZE, l1icachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L1ICACHESIZE, sysctl_hw_generic, "I", "");
 346 SYSCTL_PROC(_hw, HW_L1DCACHESIZE, l1dcachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L1DCACHESIZE, sysctl_hw_generic, "I", "");
 347 SYSCTL_PROC(_hw, HW_L2CACHESIZE,  l2cachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L2CACHESIZE, sysctl_hw_generic, "I", "");
 348 SYSCTL_PROC(_hw, HW_L3CACHESIZE,  l3cachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L3CACHESIZE, sysctl_hw_generic, "I", "");
 349 SYSCTL_INT (_hw, HW_TB_FREQ,      tbfrequency_compat, CTLFLAG_RD | CTLFLAG_MASKED, &gPEClockFrequencyInfo.timebase_frequency_hz, 0, "");
 350 SYSCTL_PROC(_hw, HW_MACHINE,      machine, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_MACHINE, sysctl_hw_generic, "A", "");
 351 SYSCTL_PROC(_hw, HW_MODEL,        model, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_MODEL, sysctl_hw_generic, "A", "");
 352 SYSCTL_UINT(_hw, HW_PHYSMEM,      physmem, CTLFLAG_RD | CTLFLAG_MASKED, &mem_size, 0, "");
 353 SYSCTL_PROC(_hw, HW_USERMEM,      usermem, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_USERMEM,    sysctl_hw_generic, "I", "");
 354 SYSCTL_PROC(_hw, HW_EPOCH,        epoch, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_EPOCH, sysctl_hw_generic, "I", "");
 355 SYSCTL_PROC(_hw, HW_VECTORUNIT,   vectorunit, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_VECTORUNIT, sysctl_hw_generic, "I", "");
 356 SYSCTL_PROC(_hw, HW_L2SETTINGS,   l2settings, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L2SETTINGS, sysctl_hw_generic, "I", "");
 357 SYSCTL_PROC(_hw, HW_L3SETTINGS,   l3settings, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED, 0, HW_L3SETTINGS, sysctl_hw_generic, "I", "");
 358
 359 /******************************************************************************
 360  * Generic MIB initialisation.
 361  *
 362  * This is a hack, and should be replaced with SYSINITs
 363  * at some point.
 364  */
 365 void
 366 sysctl_mib_init(void)
 367 {
 368         cputype = cpu_type();
 369         cpusubtype = cpu_subtype();
 370         cputhreadtype = cpu_threadtype();
 371
 372         /*
 373          * Populate the optional portion of the hw.* MIB.
 374          *
 375          * XXX This could be broken out into parts of the code
 376          *     that actually directly relate to the functions in
 377          *     question.
 378          */
 379
 380         if (cputhreadtype != CPU_THREADTYPE_NONE) {
 381                 static SYSCTL_INT(_hw, OID_AUTO, cputhreadtype, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &cputhreadtype, 0, "");
 382                 sysctl_register_oid(&sysctl__hw_cputhreadtype);
 383         }
 384
 385 #ifdef __ppc__
 386         {
 387                 static int altivec_flag = -1;
 388                 static SYSCTL_INT(_hw_optional, OID_AUTO, altivec, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &altivec_flag, 0, "");
 389
 390                 if (_cpu_capabilities & kHasAltivec) {
 391                         altivec_flag = 1;
 392                         sysctl_register_oid(&sysctl__hw_optional_altivec);
 393                 }
 394         }
 395         {
 396                 static int graphicsops_flag = -1;
 397                 static SYSCTL_INT(_hw_optional, OID_AUTO, graphicsops, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &graphicsops_flag, 0, "");
 398
 399                 if (_cpu_capabilities & kHasGraphicsOps) {
 400                         graphicsops_flag = 1;
 401                         sysctl_register_oid(&sysctl__hw_optional_graphicsops);
 402                 }
 403         }
 404         {
 405                 static int x64bitops_flag = -1;
 406                 static SYSCTL_INT(_hw_optional, OID_AUTO, 64bitops, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &x64bitops_flag, 0, "");
 407
 408                 if (_cpu_capabilities & k64Bit) {
 409                         x64bitops_flag = 1;
 410                         sysctl_register_oid(&sysctl__hw_optional_64bitops);
 411                 }
 412         }
 413         {
 414                 static int fsqrt_flag = -1;
 415                 static SYSCTL_INT(_hw_optional, OID_AUTO, fsqrt, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &fsqrt_flag, 0, "");
 416
 417                 if (_cpu_capabilities & kHasFsqrt) {
 418                         fsqrt_flag = 1;
 419                         sysctl_register_oid(&sysctl__hw_optional_fsqrt);
 420                 }
 421         }
 422         {
 423                 static int stfiwx_flag = -1;
 424                 static SYSCTL_INT(_hw_optional, OID_AUTO, stfiwx, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &stfiwx_flag, 0, "");
 425
 426                 if (_cpu_capabilities & kHasStfiwx) {
 427                         stfiwx_flag = 1;
 428                         sysctl_register_oid(&sysctl__hw_optional_stfiwx);
 429                 }
 430         }
 431         {
 432                 static int dcba_flag = -1;
 433                 static SYSCTL_INT(_hw_optional, OID_AUTO, dcba, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &dcba_flag, 0, "");
 434
 435                 if (_cpu_capabilities & kDcbaAvailable)
 436                         dcba_flag = 0;
 437                 if (_cpu_capabilities & kDcbaRecommended)
 438                         dcba_flag = 1;
 439                 if (dcba_flag >= 0)
 440                         sysctl_register_oid(&sysctl__hw_optional_dcba);
 441         }
 442         {
 443                 static int datastreams_flag = -1;
 444                 static SYSCTL_INT(_hw_optional, OID_AUTO, datastreams, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &datastreams_flag, 0, "");
 445
 446                 if (_cpu_capabilities & kDataStreamsAvailable)
 447                         datastreams_flag = 0;
 448                 if (_cpu_capabilities & kDataStreamsRecommended)
 449                         datastreams_flag = 1;
 450                 if (datastreams_flag >= 0)
 451                         sysctl_register_oid(&sysctl__hw_optional_datastreams);
 452         }
 453         {
 454                 static int dcbtstreams_flag = -1;
 455                 static SYSCTL_INT(_hw_optional, OID_AUTO, dcbtstreams, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN, &dcbtstreams_flag, 0, "");
 456
 457                 if (_cpu_capabilities & kDcbtStreamsAvailable)
 458                         dcbtstreams_flag = 0;
 459                 if (_cpu_capabilities & kDcbtStreamsRecommended)
 460                         dcbtstreams_flag = 1;
 461                 if (dcbtstreams_flag >= 0)
 462                         sysctl_register_oid(&sysctl__hw_optional_dcbtstreams);
 463         }
 464 #else
 465 # warning we do not support this platform yet
 466 #endif /* __ppc__ */
 467
 468
 469 }