The Design and Implementation of the FreeBSD Operating System, Second Edition
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sys/conf/NOTES

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    1 # $FreeBSD: releng/8.1/sys/conf/NOTES 208754 2010-06-02 18:46:12Z glebius $
    2 #
    3 # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
    4 #
    5 # Lines that begin with 'device', 'options', 'machine', 'ident', 'maxusers',
    6 # 'makeoptions', 'hints', etc. go into the kernel configuration that you
    7 # run config(8) with.
    8 #
    9 # Lines that begin with 'hint.' are NOT for config(8), they go into your
   10 # hints file.  See /boot/device.hints and/or the 'hints' config(8) directive.
   11 #
   12 # Please use ``make LINT'' to create an old-style LINT file if you want to
   13 # do kernel test-builds.
   14 #
   15 # This file contains machine independent kernel configuration notes.  For
   16 # machine dependent notes, look in /sys/<arch>/conf/NOTES.
   17 #
   18 
   19 #
   20 # NOTES conventions and style guide:
   21 #
   22 # Large block comments should begin and end with a line containing only a
   23 # comment character.
   24 #
   25 # To describe a particular object, a block comment (if it exists) should
   26 # come first.  Next should come device, options, and hints lines in that
   27 # order.  All device and option lines must be described by a comment that
   28 # doesn't just expand the device or option name.  Use only a concise
   29 # comment on the same line if possible.  Very detailed descriptions of
   30 # devices and subsystems belong in man pages.
   31 #
   32 # A space followed by a tab separates 'options' from an option name.  Two
   33 # spaces followed by a tab separate 'device' from a device name.  Comments
   34 # after an option or device should use one space after the comment character.
   35 # To comment out a negative option that disables code and thus should not be
   36 # enabled for LINT builds, precede 'options' with "#!".
   37 #
   38 
   39 #
   40 # This is the ``identification'' of the kernel.  Usually this should
   41 # be the same as the name of your kernel.
   42 #
   43 ident           LINT
   44 
   45 #
   46 # The `maxusers' parameter controls the static sizing of a number of
   47 # internal system tables by a formula defined in subr_param.c.
   48 # Omitting this parameter or setting it to 0 will cause the system to
   49 # auto-size based on physical memory.
   50 #
   51 maxusers        10
   52 
   53 #
   54 # The `makeoptions' parameter allows variables to be passed to the
   55 # generated Makefile in the build area.
   56 #
   57 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
   58 # after most other flags.  Here we use it to inhibit use of non-optimal
   59 # gcc built-in functions (e.g., memcmp).
   60 #
   61 # DEBUG happens to be magic.
   62 # The following is equivalent to 'config -g KERNELNAME' and creates
   63 # 'kernel.debug' compiled with -g debugging as well as a normal
   64 # 'kernel'.  Use 'make install.debug' to install the debug kernel
   65 # but that isn't normally necessary as the debug symbols are not loaded
   66 # by the kernel and are not useful there anyway.
   67 #
   68 # KERNEL can be overridden so that you can change the default name of your
   69 # kernel.
   70 #
   71 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
   72 #
   73 makeoptions     CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
   74 #makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug symbols
   75 #makeoptions    KERNEL=foo              #Build kernel "foo" and install "/foo"
   76 # Only build ext2fs module plus those parts of the sound system I need.
   77 #makeoptions    MODULES_OVERRIDE="ext2fs sound/sound sound/driver/maestro3"
   78 makeoptions     DESTDIR=/tmp
   79 
   80 #
   81 # FreeBSD processes are subject to certain limits to their consumption
   82 # of system resources.  See getrlimit(2) for more details.  Each
   83 # resource limit has two values, a "soft" limit and a "hard" limit.
   84 # The soft limits can be modified during normal system operation, but
   85 # the hard limits are set at boot time.  Their default values are
   86 # in sys/<arch>/include/vmparam.h.  There are two ways to change them:
   87 # 
   88 # 1.  Set the values at kernel build time.  The options below are one
   89 #     way to allow that limit to grow to 1GB.  They can be increased
   90 #     further by changing the parameters:
   91 #       
   92 # 2.  In /boot/loader.conf, set the tunables kern.maxswzone,
   93 #     kern.maxbcache, kern.maxtsiz, kern.dfldsiz, kern.maxdsiz,
   94 #     kern.dflssiz, kern.maxssiz and kern.sgrowsiz.
   95 #
   96 # The options in /boot/loader.conf override anything in the kernel
   97 # configuration file.  See the function init_param1 in
   98 # sys/kern/subr_param.c for more details.
   99 #
  100 
  101 options         MAXDSIZ=(1024UL*1024*1024)
  102 options         MAXSSIZ=(128UL*1024*1024)
  103 options         DFLDSIZ=(1024UL*1024*1024)
  104 
  105 #
  106 # BLKDEV_IOSIZE sets the default block size used in user block
  107 # device I/O.  Note that this value will be overridden by the label
  108 # when specifying a block device from a label with a non-0
  109 # partition blocksize.  The default is PAGE_SIZE.
  110 #
  111 options         BLKDEV_IOSIZE=8192
  112 
  113 #
  114 # MAXPHYS and DFLTPHYS
  115 #
  116 # These are the max and default 'raw' I/O block device access sizes.
  117 # Reads and writes will be split into DFLTPHYS chunks. Some applications
  118 # have better performance with larger raw I/O access sizes. Typically
  119 # MAXPHYS should be twice the size of DFLTPHYS. Note that certain VM
  120 # parameters are derived from these values and making them too large
  121 # can make an an unbootable kernel.
  122 #
  123 # The defaults are 64K and 128K respectively.
  124 options         DFLTPHYS=(64*1024)
  125 options         MAXPHYS=(128*1024)
  126 
  127 
  128 # This allows you to actually store this configuration file into
  129 # the kernel binary itself. See config(8) for more details.
  130 #
  131 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
  132 
  133 options         GEOM_AES                # Don't use, use GEOM_BDE
  134 options         GEOM_BDE                # Disk encryption.
  135 options         GEOM_BSD                # BSD disklabels
  136 options         GEOM_CACHE              # Disk cache.
  137 options         GEOM_CONCAT             # Disk concatenation.
  138 options         GEOM_ELI                # Disk encryption.
  139 options         GEOM_FOX                # Redundant path mitigation
  140 options         GEOM_GATE               # Userland services.
  141 options         GEOM_JOURNAL            # Journaling.
  142 options         GEOM_LABEL              # Providers labelization.
  143 options         GEOM_LINUX_LVM          # Linux LVM2 volumes
  144 options         GEOM_MBR                # DOS/MBR partitioning
  145 options         GEOM_MIRROR             # Disk mirroring.
  146 options         GEOM_MULTIPATH          # Disk multipath
  147 options         GEOM_NOP                # Test class.
  148 options         GEOM_PART_APM           # Apple partitioning
  149 options         GEOM_PART_BSD           # BSD disklabel
  150 options         GEOM_PART_EBR           # Extended Boot Records
  151 options         GEOM_PART_EBR_COMPAT    # Backward compatible partition names
  152 options         GEOM_PART_GPT           # GPT partitioning
  153 options         GEOM_PART_MBR           # MBR partitioning
  154 options         GEOM_PART_PC98          # PC-9800 disk partitioning
  155 options         GEOM_PART_VTOC8         # SMI VTOC8 disk label
  156 options         GEOM_PC98               # NEC PC9800 partitioning
  157 options         GEOM_RAID3              # RAID3 functionality.
  158 options         GEOM_SHSEC              # Shared secret.
  159 options         GEOM_STRIPE             # Disk striping.
  160 options         GEOM_SUNLABEL           # Sun/Solaris partitioning
  161 options         GEOM_UZIP               # Read-only compressed disks
  162 options         GEOM_VIRSTOR            # Virtual storage.
  163 options         GEOM_VOL                # Volume names from UFS superblock
  164 options         GEOM_ZERO               # Performance testing helper.
  165 
  166 #
  167 # The root device and filesystem type can be compiled in;
  168 # this provides a fallback option if the root device cannot
  169 # be correctly guessed by the bootstrap code, or an override if
  170 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
  171 #
  172 options         ROOTDEVNAME=\"ufs:da0s2e\"
  173 
  174 
  175 #####################################################################
  176 # Scheduler options:
  177 #
  178 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
  179 # select which scheduler is compiled in.
  180 #
  181 # SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
  182 # queue and no CPU affinity which makes it suboptimal for SMP.  It has very
  183 # good interactivity and priority selection.
  184 #
  185 # SCHED_ULE provides significant performance advantages over 4BSD on many
  186 # workloads on SMP machines.  It supports cpu-affinity, per-cpu runqueues
  187 # and scheduler locks.  It also has a stronger notion of interactivity 
  188 # which leads to better responsiveness even on uniprocessor machines.  This
  189 # will eventually become the default scheduler.
  190 #
  191 # SCHED_STATS is a debugging option which keeps some stats in the sysctl
  192 # tree at 'kern.sched.stats' and is useful for debugging scheduling decisions.
  193 #
  194 options         SCHED_4BSD
  195 options         SCHED_STATS
  196 #options        SCHED_ULE
  197 
  198 #####################################################################
  199 # SMP OPTIONS:
  200 #
  201 # SMP enables building of a Symmetric MultiProcessor Kernel.
  202 
  203 # Mandatory:
  204 options         SMP                     # Symmetric MultiProcessor Kernel
  205 
  206 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
  207 # if the thread that currently owns the mutex is executing on another
  208 # CPU.  This behaviour is enabled by default, so this option can be used
  209 # to disable it.
  210 options         NO_ADAPTIVE_MUTEXES
  211 
  212 # ADAPTIVE_RWLOCKS changes the behavior of reader/writer locks to spin
  213 # if the thread that currently owns the rwlock is executing on another
  214 # CPU.  This behaviour is enabled by default, so this option can be used
  215 # to disable it.
  216 options         NO_ADAPTIVE_RWLOCKS
  217 
  218 # ADAPTIVE_SX changes the behavior of sx locks to spin if the thread that
  219 # currently owns the sx lock is executing on another CPU.
  220 # This behaviour is enabled by default, so this option can be used to
  221 # disable it.
  222 options         NO_ADAPTIVE_SX
  223 
  224 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
  225 # operation rather than inlining the simple cases.  This can be used to
  226 # shrink the size of the kernel text segment.  Note that this behavior is
  227 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  228 # and WITNESS options.
  229 options         MUTEX_NOINLINE
  230 
  231 # RWLOCK_NOINLINE forces rwlock operations to call functions to perform each
  232 # operation rather than inlining the simple cases.  This can be used to
  233 # shrink the size of the kernel text segment.  Note that this behavior is
  234 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  235 # and WITNESS options.
  236 options         RWLOCK_NOINLINE
  237 
  238 # SX_NOINLINE forces sx lock operations to call functions to perform each
  239 # operation rather than inlining the simple cases.  This can be used to
  240 # shrink the size of the kernel text segment.  Note that this behavior is
  241 # already implied by the INVARIANT_SUPPORT, INVARIANTS, KTR, LOCK_PROFILING,
  242 # and WITNESS options.
  243 options         SX_NOINLINE
  244 
  245 # SMP Debugging Options:
  246 #
  247 # PREEMPTION allows the threads that are in the kernel to be preempted by
  248 #         higher priority [interrupt] threads.  It helps with interactivity
  249 #         and allows interrupt threads to run sooner rather than waiting.
  250 #         WARNING! Only tested on amd64 and i386.
  251 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
  252 #         threads.  Its sole use is to expose race conditions and other
  253 #         bugs during development.  Enabling this option will reduce
  254 #         performance and increase the frequency of kernel panics by
  255 #         design.  If you aren't sure that you need it then you don't.
  256 #         Relies on the PREEMPTION option.  DON'T TURN THIS ON.
  257 # MUTEX_DEBUG enables various extra assertions in the mutex code.
  258 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
  259 #         used to hold active sleep queues as well as sleep wait message
  260 #         frequency.
  261 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
  262 #         used to hold active lock queues.
  263 # WITNESS enables the witness code which detects deadlocks and cycles
  264 #         during locking operations.
  265 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
  266 #         a lock hierarchy violation occurs or if locks are held when going to
  267 #         sleep.
  268 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
  269 options         PREEMPTION
  270 options         FULL_PREEMPTION
  271 options         MUTEX_DEBUG
  272 options         WITNESS
  273 options         WITNESS_KDB
  274 options         WITNESS_SKIPSPIN
  275 
  276 # LOCK_PROFILING - Profiling locks.  See LOCK_PROFILING(9) for details.
  277 options         LOCK_PROFILING
  278 # Set the number of buffers and the hash size.  The hash size MUST be larger
  279 # than the number of buffers.  Hash size should be prime.
  280 options         MPROF_BUFFERS="1536"
  281 options         MPROF_HASH_SIZE="1543"
  282 
  283 # Profiling for internal hash tables.
  284 options         SLEEPQUEUE_PROFILING
  285 options         TURNSTILE_PROFILING
  286 
  287 
  288 #####################################################################
  289 # COMPATIBILITY OPTIONS
  290 
  291 #
  292 # Implement system calls compatible with 4.3BSD and older versions of
  293 # FreeBSD.  You probably do NOT want to remove this as much current code
  294 # still relies on the 4.3 emulation.  Note that some architectures that
  295 # are supported by FreeBSD do not include support for certain important
  296 # aspects of this compatibility option, namely those related to the
  297 # signal delivery mechanism.
  298 #
  299 options         COMPAT_43
  300 
  301 # Old tty interface.
  302 options         COMPAT_43TTY
  303 
  304 # Note that as a general rule, COMPAT_FREEBSD<n> depends on
  305 # COMPAT_FREEBSD<n+1>, COMPAT_FREEBSD<n+2>, etc.
  306 
  307 # Enable FreeBSD4 compatibility syscalls
  308 options         COMPAT_FREEBSD4
  309 
  310 # Enable FreeBSD5 compatibility syscalls
  311 options         COMPAT_FREEBSD5
  312 
  313 # Enable FreeBSD6 compatibility syscalls
  314 options         COMPAT_FREEBSD6
  315 
  316 # Enable FreeBSD7 compatibility syscalls
  317 options         COMPAT_FREEBSD7
  318 
  319 #
  320 # These three options provide support for System V Interface
  321 # Definition-style interprocess communication, in the form of shared
  322 # memory, semaphores, and message queues, respectively.
  323 #
  324 options         SYSVSHM
  325 options         SYSVSEM
  326 options         SYSVMSG
  327 
  328 
  329 #####################################################################
  330 # DEBUGGING OPTIONS
  331 
  332 #
  333 # Compile with kernel debugger related code.
  334 #
  335 options         KDB
  336 
  337 #
  338 # Print a stack trace of the current thread on the console for a panic.
  339 #
  340 options         KDB_TRACE
  341 
  342 #
  343 # Don't enter the debugger for a panic. Intended for unattended operation
  344 # where you may want to enter the debugger from the console, but still want
  345 # the machine to recover from a panic.
  346 #
  347 options         KDB_UNATTENDED
  348 
  349 #
  350 # Enable the ddb debugger backend.
  351 #
  352 options         DDB
  353 
  354 #
  355 # Print the numerical value of symbols in addition to the symbolic
  356 # representation.
  357 #
  358 options         DDB_NUMSYM
  359 
  360 #
  361 # Enable the remote gdb debugger backend.
  362 #
  363 options         GDB
  364 
  365 #
  366 # Enable the kernel DTrace hooks which are required to load the DTrace
  367 # kernel modules.
  368 #
  369 options         KDTRACE_HOOKS
  370 
  371 #
  372 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
  373 # contents of the registered sysctl nodes on the console.  It is disabled by
  374 # default because it generates excessively verbose console output that can
  375 # interfere with serial console operation.
  376 #
  377 options         SYSCTL_DEBUG
  378 
  379 #
  380 # NO_SYSCTL_DESCR omits the sysctl node descriptions to save space in the
  381 # resulting kernel.
  382 options         NO_SYSCTL_DESCR
  383 
  384 #
  385 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
  386 # for the kernel used to detect modify-after-free scenarios.  See the
  387 # memguard(9) man page for more information on usage.
  388 #
  389 options         DEBUG_MEMGUARD
  390 
  391 #
  392 # DEBUG_REDZONE enables buffer underflows and buffer overflows detection for
  393 # malloc(9).
  394 #
  395 options         DEBUG_REDZONE
  396 
  397 #
  398 # KTRACE enables the system-call tracing facility ktrace(2).  To be more
  399 # SMP-friendly, KTRACE uses a worker thread to process most trace events
  400 # asynchronously to the thread generating the event.  This requires a
  401 # pre-allocated store of objects representing trace events.  The
  402 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
  403 # The size of the pool can be adjusted both at boottime and runtime via
  404 # the kern.ktrace_request_pool tunable and sysctl.
  405 #
  406 options         KTRACE                  #kernel tracing
  407 options         KTRACE_REQUEST_POOL=101
  408 
  409 #
  410 # KTR is a kernel tracing mechanism imported from BSD/OS.  Currently
  411 # it has no userland interface aside from a few sysctl's.  It is
  412 # enabled with the KTR option.  KTR_ENTRIES defines the number of
  413 # entries in the circular trace buffer; it must be a power of two.
  414 # KTR_COMPILE defines the mask of events to compile into the kernel as
  415 # defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
  416 # initial value of the ktr_mask variable which determines at runtime
  417 # what events to trace.  KTR_CPUMASK determines which CPU's log
  418 # events, with bit X corresponding to CPU X.  KTR_VERBOSE enables
  419 # dumping of KTR events to the console by default.  This functionality
  420 # can be toggled via the debug.ktr_verbose sysctl and defaults to off
  421 # if KTR_VERBOSE is not defined.
  422 #
  423 options         KTR
  424 options         KTR_ENTRIES=1024
  425 options         KTR_COMPILE=(KTR_INTR|KTR_PROC)
  426 options         KTR_MASK=KTR_INTR
  427 options         KTR_CPUMASK=0x3
  428 options         KTR_VERBOSE
  429 
  430 #
  431 # ALQ(9) is a facility for the asynchronous queuing of records from the kernel
  432 # to a vnode, and is employed by services such as KTR(4) to produce trace
  433 # files based on a kernel event stream.  Records are written asynchronously
  434 # in a worker thread.
  435 #
  436 options         ALQ
  437 options         KTR_ALQ
  438 
  439 #
  440 # The INVARIANTS option is used in a number of source files to enable
  441 # extra sanity checking of internal structures.  This support is not
  442 # enabled by default because of the extra time it would take to check
  443 # for these conditions, which can only occur as a result of
  444 # programming errors.
  445 #
  446 options         INVARIANTS
  447 
  448 #
  449 # The INVARIANT_SUPPORT option makes us compile in support for
  450 # verifying some of the internal structures.  It is a prerequisite for
  451 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  452 # called.  The intent is that you can set 'INVARIANTS' for single
  453 # source files (by changing the source file or specifying it on the
  454 # command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
  455 # wish to build a kernel module with 'INVARIANTS', then adding
  456 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
  457 # infrastructure without the added overhead.
  458 #
  459 options         INVARIANT_SUPPORT
  460 
  461 #
  462 # The DIAGNOSTIC option is used to enable extra debugging information
  463 # from some parts of the kernel.  As this makes everything more noisy,
  464 # it is disabled by default.
  465 #
  466 options         DIAGNOSTIC
  467 
  468 #
  469 # REGRESSION causes optional kernel interfaces necessary only for regression
  470 # testing to be enabled.  These interfaces may constitute security risks
  471 # when enabled, as they permit processes to easily modify aspects of the
  472 # run-time environment to reproduce unlikely or unusual (possibly normally
  473 # impossible) scenarios.
  474 #
  475 options         REGRESSION
  476 
  477 #
  478 # RESTARTABLE_PANICS allows one to continue from a panic as if it were
  479 # a call to the debugger to continue from a panic as instead.  It is only
  480 # useful if a kernel debugger is present.  To restart from a panic, reset
  481 # the panicstr variable to NULL and continue execution.  This option is
  482 # for development use only and should NOT be used in production systems
  483 # to "workaround" a panic.
  484 #
  485 #options        RESTARTABLE_PANICS
  486 
  487 #
  488 # This option let some drivers co-exist that can't co-exist in a running
  489 # system.  This is used to be able to compile all kernel code in one go for
  490 # quality assurance purposes (like this file, which the option takes it name
  491 # from.)
  492 #
  493 options         COMPILING_LINT
  494 
  495 #
  496 # STACK enables the stack(9) facility, allowing the capture of kernel stack
  497 # for the purpose of procinfo(1), etc.  stack(9) will also be compiled in
  498 # automatically if DDB(4) is compiled into the kernel.
  499 #
  500 options         STACK
  501 
  502 
  503 #####################################################################
  504 # PERFORMANCE MONITORING OPTIONS
  505 
  506 #
  507 # The hwpmc driver that allows the use of in-CPU performance monitoring
  508 # counters for performance monitoring.  The base kernel needs to configured
  509 # with the 'options' line, while the hwpmc device can be either compiled
  510 # in or loaded as a loadable kernel module.
  511 #
  512 # Additional configuration options may be required on specific architectures,
  513 # please see hwpmc(4).
  514 
  515 device          hwpmc                   # Driver (also a loadable module)
  516 options         HWPMC_HOOKS             # Other necessary kernel hooks
  517 
  518 
  519 #####################################################################
  520 # NETWORKING OPTIONS
  521 
  522 #
  523 # Protocol families
  524 #
  525 options         INET                    #Internet communications protocols
  526 options         INET6                   #IPv6 communications protocols
  527 
  528 options         ROUTETABLES=2           # max 16. 1 is back compatible.
  529 
  530 # In order to enable IPSEC you MUST also add device crypto to 
  531 # your kernel configuration
  532 options         IPSEC                   #IP security (requires device crypto)
  533 #options        IPSEC_DEBUG             #debug for IP security
  534 #
  535 # #DEPRECATED#
  536 # Set IPSEC_FILTERTUNNEL to change the default of the sysctl to force packets
  537 # coming through a tunnel to be processed by any configured packet filtering
  538 # twice. The default is that packets coming out of a tunnel are _not_ processed;
  539 # they are assumed trusted.
  540 #
  541 # IPSEC history is preserved for such packets, and can be filtered
  542 # using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
  543 #
  544 #options        IPSEC_FILTERTUNNEL      #filter ipsec packets from a tunnel
  545 #
  546 # Set IPSEC_NAT_T to enable NAT-Traversal support.  This enables
  547 # optional UDP encapsulation of ESP packets.
  548 #
  549 options         IPSEC_NAT_T             #NAT-T support, UDP encap of ESP
  550 
  551 options         IPX                     #IPX/SPX communications protocols
  552 
  553 options         NCP                     #NetWare Core protocol
  554 
  555 options         NETATALK                #Appletalk communications protocols
  556 options         NETATALKDEBUG           #Appletalk debugging
  557 
  558 #
  559 # SMB/CIFS requester
  560 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  561 # options.
  562 options         NETSMB                  #SMB/CIFS requester
  563 
  564 # mchain library. It can be either loaded as KLD or compiled into kernel
  565 options         LIBMCHAIN
  566 
  567 # libalias library, performing NAT
  568 options         LIBALIAS
  569 
  570 # flowtable cache
  571 options         FLOWTABLE
  572 
  573 #
  574 # SCTP is a NEW transport protocol defined by
  575 # RFC2960 updated by RFC3309 and RFC3758.. and
  576 # soon to have a new base RFC and many many more
  577 # extensions. This release supports all the extensions
  578 # including many drafts (most about to become RFC's).
  579 # It is the premeier SCTP implementation in the NET
  580 # and is quite well tested.
  581 #
  582 # Note YOU MUST have both INET and INET6 defined.
  583 # you don't have to enable V6, but SCTP is 
  584 # dual stacked and so far we have not teased apart
  585 # the V6 and V4.. since an association can span
  586 # both a V6 and V4 address at the SAME time :-)
  587 #
  588 options         SCTP
  589 # There are bunches of options:
  590 # this one turns on all sorts of
  591 # nastly printing that you can
  592 # do. Its all controled by a
  593 # bit mask (settable by socket opt and
  594 # by sysctl). Including will not cause
  595 # logging until you set the bits.. but it
  596 # can be quite verbose.. so without this
  597 # option we don't do any of the tests for
  598 # bits and prints.. which makes the code run
  599 # faster.. if you are not debugging don't use.
  600 options         SCTP_DEBUG
  601 #
  602 # This option turns off the CRC32c checksum. Basically
  603 # You will not be able to talk to anyone else that
  604 # has not done this. Its more for expermentation to
  605 # see how much CPU the CRC32c really takes. Most new
  606 # cards for TCP support checksum offload.. so this 
  607 # option gives you a "view" into what SCTP would be
  608 # like with such an offload (which only exists in
  609 # high in iSCSI boards so far). With the new
  610 # splitting 8's algorithm its not as bad as it used
  611 # to be.. but it does speed things up try only
  612 # for in a captured lab environment :-)
  613 options         SCTP_WITH_NO_CSUM
  614 #
  615 
  616 #
  617 # All that options after that turn on specific types of
  618 # logging. You can monitor CWND growth, flight size
  619 # and all sorts of things. Go look at the code and
  620 # see. I have used this to produce interesting 
  621 # charts and graphs as well :->
  622 # 
  623 # I have not yet commited the tools to get and print
  624 # the logs, I will do that eventually .. before then
  625 # if you want them send me an email rrs@freebsd.org
  626 # You basically must have KTR enabled for these
  627 # and you then set the sysctl to turn on/off various
  628 # logging bits. Use ktrdump to pull the log and run
  629 # it through a dispaly program.. and graphs and other
  630 # things too.
  631 #
  632 options         SCTP_LOCK_LOGGING
  633 options         SCTP_MBUF_LOGGING
  634 options         SCTP_MBCNT_LOGGING
  635 options         SCTP_PACKET_LOGGING
  636 options         SCTP_LTRACE_CHUNKS
  637 options         SCTP_LTRACE_ERRORS
  638 
  639 
  640 # altq(9). Enable the base part of the hooks with the ALTQ option.
  641 # Individual disciplines must be built into the base system and can not be
  642 # loaded as modules at this point. ALTQ requires a stable TSC so if yours is
  643 # broken or changes with CPU throttling then you must also have the ALTQ_NOPCC
  644 # option.
  645 options         ALTQ
  646 options         ALTQ_CBQ        # Class Based Queueing
  647 options         ALTQ_RED        # Random Early Detection
  648 options         ALTQ_RIO        # RED In/Out
  649 options         ALTQ_HFSC       # Hierarchical Packet Scheduler
  650 options         ALTQ_CDNR       # Traffic conditioner
  651 options         ALTQ_PRIQ       # Priority Queueing
  652 options         ALTQ_NOPCC      # Required if the TSC is unusable
  653 options         ALTQ_DEBUG
  654 
  655 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  656 # Individual node types can be enabled with the corresponding option
  657 # listed below; however, this is not strictly necessary as netgraph
  658 # will automatically load the corresponding KLD module if the node type
  659 # is not already compiled into the kernel. Each type below has a
  660 # corresponding man page, e.g., ng_async(8).
  661 options         NETGRAPH                # netgraph(4) system
  662 options         NETGRAPH_DEBUG          # enable extra debugging, this
  663                                         # affects netgraph(4) and nodes
  664 # Node types
  665 options         NETGRAPH_ASYNC
  666 options         NETGRAPH_ATMLLC
  667 options         NETGRAPH_ATM_ATMPIF
  668 options         NETGRAPH_BLUETOOTH              # ng_bluetooth(4)
  669 options         NETGRAPH_BLUETOOTH_BT3C         # ng_bt3c(4)
  670 options         NETGRAPH_BLUETOOTH_HCI          # ng_hci(4)
  671 options         NETGRAPH_BLUETOOTH_L2CAP        # ng_l2cap(4)
  672 options         NETGRAPH_BLUETOOTH_SOCKET       # ng_btsocket(4)
  673 options         NETGRAPH_BLUETOOTH_UBT          # ng_ubt(4)
  674 options         NETGRAPH_BLUETOOTH_UBTBCMFW     # ubtbcmfw(4)
  675 options         NETGRAPH_BPF
  676 options         NETGRAPH_BRIDGE
  677 options         NETGRAPH_CAR
  678 options         NETGRAPH_CISCO
  679 options         NETGRAPH_DEFLATE
  680 options         NETGRAPH_DEVICE
  681 options         NETGRAPH_ECHO
  682 options         NETGRAPH_EIFACE
  683 options         NETGRAPH_ETHER
  684 options         NETGRAPH_FEC
  685 options         NETGRAPH_FRAME_RELAY
  686 options         NETGRAPH_GIF
  687 options         NETGRAPH_GIF_DEMUX
  688 options         NETGRAPH_HOLE
  689 options         NETGRAPH_IFACE
  690 options         NETGRAPH_IP_INPUT
  691 options         NETGRAPH_IPFW
  692 options         NETGRAPH_KSOCKET
  693 options         NETGRAPH_L2TP
  694 options         NETGRAPH_LMI
  695 # MPPC compression requires proprietary files (not included)
  696 #options        NETGRAPH_MPPC_COMPRESSION
  697 options         NETGRAPH_MPPC_ENCRYPTION
  698 options         NETGRAPH_NETFLOW
  699 options         NETGRAPH_NAT
  700 options         NETGRAPH_ONE2MANY
  701 options         NETGRAPH_PIPE
  702 options         NETGRAPH_PPP
  703 options         NETGRAPH_PPPOE
  704 options         NETGRAPH_PPTPGRE
  705 options         NETGRAPH_PRED1
  706 options         NETGRAPH_RFC1490
  707 options         NETGRAPH_SOCKET
  708 options         NETGRAPH_SPLIT
  709 options         NETGRAPH_SPPP
  710 options         NETGRAPH_TAG
  711 options         NETGRAPH_TCPMSS
  712 options         NETGRAPH_TEE
  713 options         NETGRAPH_UI
  714 options         NETGRAPH_VJC
  715 
  716 # NgATM - Netgraph ATM
  717 options         NGATM_ATM
  718 options         NGATM_ATMBASE
  719 options         NGATM_SSCOP
  720 options         NGATM_SSCFU
  721 options         NGATM_UNI
  722 options         NGATM_CCATM
  723 
  724 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  725 
  726 #
  727 # Network interfaces:
  728 #  The `loop' device is MANDATORY when networking is enabled.
  729 device          loop
  730 
  731 #  The `ether' device provides generic code to handle
  732 #  Ethernets; it is MANDATORY when an Ethernet device driver is
  733 #  configured or token-ring is enabled.
  734 device          ether
  735 
  736 #  The `vlan' device implements the VLAN tagging of Ethernet frames
  737 #  according to IEEE 802.1Q.
  738 device          vlan
  739 
  740 #  The `wlan' device provides generic code to support 802.11
  741 #  drivers, including host AP mode; it is MANDATORY for the wi,
  742 #  and ath drivers and will eventually be required by all 802.11 drivers.
  743 device          wlan
  744 options         IEEE80211_DEBUG         #enable debugging msgs
  745 options         IEEE80211_AMPDU_AGE     #age frames in AMPDU reorder q's
  746 options         IEEE80211_SUPPORT_MESH  #enable 802.11s D3.0 support
  747 options         IEEE80211_SUPPORT_TDMA  #enable TDMA support
  748 
  749 #  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
  750 #  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
  751 #  used with 802.11 devices that depend on the `wlan' module.
  752 device          wlan_wep
  753 device          wlan_ccmp
  754 device          wlan_tkip
  755 
  756 #  The `wlan_xauth' device provides support for external (i.e. user-mode)
  757 #  authenticators for use with 802.11 drivers that use the `wlan'
  758 #  module and support 802.1x and/or WPA security protocols.
  759 device          wlan_xauth
  760 
  761 #  The `wlan_acl' device provides a MAC-based access control mechanism
  762 #  for use with 802.11 drivers operating in ap mode and using the
  763 #  `wlan' module.
  764 #  The 'wlan_amrr' device provides AMRR transmit rate control algorithm
  765 device          wlan_acl
  766 device          wlan_amrr
  767 
  768 # Generic TokenRing
  769 device          token
  770 
  771 #  The `fddi' device provides generic code to support FDDI.
  772 device          fddi
  773 
  774 #  The `arcnet' device provides generic code to support Arcnet.
  775 device          arcnet
  776 
  777 #  The `sppp' device serves a similar role for certain types
  778 #  of synchronous PPP links (like `cx', `ar').
  779 device          sppp
  780 
  781 #  The `bpf' device enables the Berkeley Packet Filter.  Be
  782 #  aware of the legal and administrative consequences of enabling this
  783 #  option.  The number of devices determines the maximum number of
  784 #  simultaneous BPF clients programs runnable.  DHCP requires bpf.
  785 device          bpf
  786 
  787 #  The `disc' device implements a minimal network interface,
  788 #  which throws away all packets sent and never receives any.  It is
  789 #  included for testing and benchmarking purposes.
  790 device          disc
  791 
  792 # The `epair' device implements a virtual back-to-back connected Ethernet
  793 # like interface pair.
  794 device          epair
  795 
  796 #  The `edsc' device implements a minimal Ethernet interface,
  797 #  which discards all packets sent and receives none.
  798 device          edsc
  799 
  800 #  The `tap' device is a pty-like virtual Ethernet interface
  801 device          tap
  802 
  803 #  The `tun' device implements (user-)ppp and nos-tun(8)
  804 device          tun
  805 
  806 #  The `gif' device implements IPv6 over IP4 tunneling,
  807 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  808 #  IPv6 over IPv6 tunneling.
  809 #  The `gre' device implements two types of IP4 over IP4 tunneling:
  810 #  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
  811 #  The XBONEHACK option allows the same pair of addresses to be configured on
  812 #  multiple gif interfaces.
  813 device          gif
  814 device          gre
  815 options         XBONEHACK
  816 
  817 #  The `faith' device captures packets sent to it and diverts them
  818 #  to the IPv4/IPv6 translation daemon.
  819 #  The `stf' device implements 6to4 encapsulation.
  820 device          faith
  821 device          stf
  822 
  823 #  The `ef' device provides support for multiple ethernet frame types
  824 #  specified via ETHER_* options. See ef(4) for details.
  825 device          ef
  826 options         ETHER_II                # enable Ethernet_II frame
  827 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  828 options         ETHER_8022              # enable Ethernet_802.2 frame
  829 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  830 
  831 # The pf packet filter consists of three devices:
  832 #  The `pf' device provides /dev/pf and the firewall code itself.
  833 #  The `pflog' device provides the pflog0 interface which logs packets.
  834 #  The `pfsync' device provides the pfsync0 interface used for
  835 #   synchronization of firewall state tables (over the net).
  836 device          pf
  837 device          pflog
  838 device          pfsync
  839 
  840 # Bridge interface.
  841 device          if_bridge
  842 
  843 # Common Address Redundancy Protocol. See carp(4) for more details.
  844 device          carp
  845 
  846 # IPsec interface.
  847 device          enc
  848 
  849 # Link aggregation interface.
  850 device          lagg
  851 
  852 #
  853 # Internet family options:
  854 #
  855 # MROUTING enables the kernel multicast packet forwarder, which works
  856 # with mrouted and XORP.
  857 #
  858 # IPFIREWALL enables support for IP firewall construction, in
  859 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  860 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  861 # limits the number of times a matching entry can be logged.
  862 #
  863 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  864 # and if you do not add other rules during startup to allow access,
  865 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  866 # in /etc/rc.conf when first enabling this feature, then refining the
  867 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  868 # feature works properly.
  869 #
  870 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  871 # allow everything.  Use with care, if a cracker can crash your
  872 # firewall machine, they can get to your protected machines.  However,
  873 # if you are using it as an as-needed filter for specific problems as
  874 # they arise, then this may be for you.  Changing the default to 'allow'
  875 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  876 # out of sync.
  877 #
  878 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
  879 # depends on IPFIREWALL if compiled into the kernel.
  880 #
  881 # IPFIREWALL_FORWARD enables changing of the packet destination either
  882 # to do some sort of policy routing or transparent proxying.  Used by
  883 # ``ipfw forward''. All  redirections apply to locally generated
  884 # packets too.  Because of this great care is required when
  885 # crafting the ruleset.
  886 #
  887 # IPFIREWALL_NAT adds support for in kernel nat in ipfw, and it requires
  888 # LIBALIAS.
  889 #
  890 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  891 # packets without touching the TTL).  This can be useful to hide firewalls
  892 # from traceroute and similar tools.
  893 #
  894 # TCPDEBUG enables code which keeps traces of the TCP state machine
  895 # for sockets with the SO_DEBUG option set, which can then be examined
  896 # using the trpt(8) utility.
  897 #
  898 options         MROUTING                # Multicast routing
  899 options         IPFIREWALL              #firewall
  900 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  901 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  902 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  903 options         IPFIREWALL_FORWARD      #packet destination changes
  904 options         IPFIREWALL_NAT          #ipfw kernel nat support
  905 options         IPDIVERT                #divert sockets
  906 options         IPFILTER                #ipfilter support
  907 options         IPFILTER_LOG            #ipfilter logging
  908 options         IPFILTER_LOOKUP         #ipfilter pools
  909 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  910 options         IPSTEALTH               #support for stealth forwarding
  911 options         TCPDEBUG
  912 
  913 # The MBUF_STRESS_TEST option enables options which create
  914 # various random failures / extreme cases related to mbuf
  915 # functions.  See mbuf(9) for a list of available test cases.
  916 # MBUF_PROFILING enables code to profile the mbuf chains
  917 # exiting the system (via participating interfaces) and
  918 # return a logarithmic histogram of monitored parameters
  919 # (e.g. packet size, wasted space, number of mbufs in chain).
  920 options         MBUF_STRESS_TEST
  921 options         MBUF_PROFILING
  922 
  923 # Statically Link in accept filters
  924 options         ACCEPT_FILTER_DATA
  925 options         ACCEPT_FILTER_DNS
  926 options         ACCEPT_FILTER_HTTP
  927 
  928 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
  929 # carried in TCP option 19. This option is commonly used to protect
  930 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
  931 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
  932 # This requires the use of 'device crypto', 'options IPSEC'
  933 # or 'device cryptodev'.
  934 options         TCP_SIGNATURE           #include support for RFC 2385
  935 
  936 # DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
  937 # as well.  See dummynet(4) and ipfw(8) for more info.  When you run
  938 # DUMMYNET it is advisable to also have at least "options HZ=1000" to achieve
  939 # a smooth scheduling of the traffic.
  940 options         DUMMYNET
  941 
  942 # Zero copy sockets support.  This enables "zero copy" for sending and
  943 # receiving data via a socket.  The send side works for any type of NIC,
  944 # the receive side only works for NICs that support MTUs greater than the
  945 # page size of your architecture and that support header splitting.  See
  946 # zero_copy(9) for more details.
  947 options         ZERO_COPY_SOCKETS
  948 
  949 
  950 #####################################################################
  951 # FILESYSTEM OPTIONS
  952 
  953 #
  954 # Only the root, /usr, and /tmp filesystems need be statically
  955 # compiled; everything else will be automatically loaded at mount
  956 # time.  (Exception: the UFS family--- FFS --- cannot
  957 # currently be demand-loaded.)  Some people still prefer to statically
  958 # compile other filesystems as well.
  959 #
  960 # NB: The PORTAL filesystem is known to be buggy, and WILL panic your
  961 # system if you attempt to do anything with it.  It is included here
  962 # as an incentive for some enterprising soul to sit down and fix it.
  963 # The UNION filesystem was known to be buggy in the past.  It is now
  964 # being actively maintained, although there are still some issues being
  965 # resolved.
  966 #
  967 
  968 # One of these is mandatory:
  969 options         FFS                     #Fast filesystem
  970 options         NFSCLIENT               #Network File System client
  971 
  972 # The rest are optional:
  973 options         CD9660                  #ISO 9660 filesystem
  974 options         FDESCFS                 #File descriptor filesystem
  975 options         HPFS                    #OS/2 File system
  976 options         MSDOSFS                 #MS DOS File System (FAT, FAT32)
  977 options         NFSSERVER               #Network File System server
  978 options         NFSLOCKD                #Network Lock Manager
  979 options         NFSCL                   #experimental NFS client with NFSv4
  980 options         NFSD                    #experimental NFS server with NFSv4
  981 options         KGSSAPI                 #Kernel GSSAPI implementaion
  982 
  983 # NT File System. Read-mostly, see mount_ntfs(8) for details.
  984 # For a full read-write NTFS support consider sysutils/fusefs-ntfs
  985 # port/package.
  986 options         NTFS
  987 
  988 options         NULLFS                  #NULL filesystem
  989 # Broken (depends on NCP):
  990 #options        NWFS                    #NetWare filesystem
  991 options         PORTALFS                #Portal filesystem
  992 options         PROCFS                  #Process filesystem (requires PSEUDOFS)
  993 options         PSEUDOFS                #Pseudo-filesystem framework
  994 options         PSEUDOFS_TRACE          #Debugging support for PSEUDOFS
  995 options         SMBFS                   #SMB/CIFS filesystem
  996 options         UDF                     #Universal Disk Format
  997 options         UNIONFS                 #Union filesystem
  998 # The xFS_ROOT options REQUIRE the associated ``options xFS''
  999 options         NFS_ROOT                #NFS usable as root device
 1000 
 1001 # Soft updates is a technique for improving filesystem speed and
 1002 # making abrupt shutdown less risky.
 1003 #
 1004 options         SOFTUPDATES
 1005 
 1006 # Extended attributes allow additional data to be associated with files,
 1007 # and is used for ACLs, Capabilities, and MAC labels.
 1008 # See src/sys/ufs/ufs/README.extattr for more information.
 1009 options         UFS_EXTATTR
 1010 options         UFS_EXTATTR_AUTOSTART
 1011 
 1012 # Access Control List support for UFS filesystems.  The current ACL
 1013 # implementation requires extended attribute support, UFS_EXTATTR,
 1014 # for the underlying filesystem.
 1015 # See src/sys/ufs/ufs/README.acls for more information.
 1016 options         UFS_ACL
 1017 
 1018 # Directory hashing improves the speed of operations on very large
 1019 # directories at the expense of some memory.
 1020 options         UFS_DIRHASH
 1021 
 1022 # Gjournal-based UFS journaling support.
 1023 options         UFS_GJOURNAL
 1024 
 1025 # Make space in the kernel for a root filesystem on a md device.
 1026 # Define to the number of kilobytes to reserve for the filesystem.
 1027 options         MD_ROOT_SIZE=10
 1028 
 1029 # Make the md device a potential root device, either with preloaded
 1030 # images of type mfs_root or md_root.
 1031 options         MD_ROOT
 1032 
 1033 # Disk quotas are supported when this option is enabled.
 1034 options         QUOTA                   #enable disk quotas
 1035 
 1036 # If you are running a machine just as a fileserver for PC and MAC
 1037 # users, using SAMBA or Netatalk, you may consider setting this option
 1038 # and keeping all those users' directories on a filesystem that is
 1039 # mounted with the suiddir option. This gives new files the same
 1040 # ownership as the directory (similar to group). It's a security hole
 1041 # if you let these users run programs, so confine it to file-servers
 1042 # (but it'll save you lots of headaches in those cases). Root owned
 1043 # directories are exempt and X bits are cleared. The suid bit must be
 1044 # set on the directory as well; see chmod(1) PC owners can't see/set
 1045 # ownerships so they keep getting their toes trodden on. This saves
 1046 # you all the support calls as the filesystem it's used on will act as
 1047 # they expect: "It's my dir so it must be my file".
 1048 #
 1049 options         SUIDDIR
 1050 
 1051 # NFS options:
 1052 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
 1053 options         NFS_MAXATTRTIMO=60
 1054 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
 1055 options         NFS_MAXDIRATTRTIMO=60
 1056 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
 1057 options         NFS_WDELAYHASHSIZ=16    # and with this
 1058 options         NFS_DEBUG               # Enable NFS Debugging
 1059 
 1060 # Coda stuff:
 1061 options         CODA                    #CODA filesystem.
 1062 device          vcoda                   #coda minicache <-> venus comm.
 1063 # Use the old Coda 5.x venus<->kernel interface instead of the new
 1064 # realms-aware 6.x protocol.
 1065 #options        CODA_COMPAT_5
 1066 
 1067 #
 1068 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
 1069 # careful with this - the ext2fs code has a tendency to lag behind
 1070 # changes and not be exercised very much, so mounting read/write could
 1071 # be dangerous (and even mounting read only could result in panics.)
 1072 #
 1073 options         EXT2FS
 1074 
 1075 #
 1076 # Add support for the ReiserFS filesystem (used in Linux). Currently,
 1077 # this is limited to read-only access.
 1078 #
 1079 options         REISERFS
 1080 
 1081 #
 1082 # Add support for the SGI XFS filesystem. Currently,
 1083 # this is limited to read-only access.
 1084 #
 1085 options         XFS
 1086 
 1087 # Use real implementations of the aio_* system calls.  There are numerous
 1088 # stability and security issues in the current aio code that make it
 1089 # unsuitable for inclusion on machines with untrusted local users.
 1090 options         VFS_AIO
 1091 
 1092 # Cryptographically secure random number generator; /dev/random
 1093 device          random
 1094 
 1095 # The system memory devices; /dev/mem, /dev/kmem
 1096 device          mem
 1097 
 1098 # The kernel symbol table device; /dev/ksyms
 1099 device          ksyms
 1100 
 1101 # Optional character code conversion support with LIBICONV.
 1102 # Each option requires their base file system and LIBICONV.
 1103 options         CD9660_ICONV
 1104 options         MSDOSFS_ICONV
 1105 options         NTFS_ICONV
 1106 options         UDF_ICONV
 1107 
 1108 
 1109 #####################################################################
 1110 # POSIX P1003.1B
 1111 
 1112 # Real time extensions added in the 1993 POSIX
 1113 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
 1114 
 1115 options         _KPOSIX_PRIORITY_SCHEDULING
 1116 # p1003_1b_semaphores are very experimental,
 1117 # user should be ready to assist in debugging if problems arise.
 1118 options         P1003_1B_SEMAPHORES
 1119 
 1120 # POSIX message queue
 1121 options         P1003_1B_MQUEUE
 1122 
 1123 #####################################################################
 1124 # SECURITY POLICY PARAMETERS
 1125 
 1126 # Support for BSM audit
 1127 options         AUDIT
 1128 
 1129 # Support for Mandatory Access Control (MAC):
 1130 options         MAC
 1131 options         MAC_BIBA
 1132 options         MAC_BSDEXTENDED
 1133 options         MAC_IFOFF
 1134 options         MAC_LOMAC
 1135 options         MAC_MLS
 1136 options         MAC_NONE
 1137 options         MAC_PARTITION
 1138 options         MAC_PORTACL
 1139 options         MAC_SEEOTHERUIDS
 1140 options         MAC_STUB
 1141 options         MAC_TEST
 1142 
 1143 
 1144 #####################################################################
 1145 # CLOCK OPTIONS
 1146 
 1147 # The granularity of operation is controlled by the kernel option HZ whose
 1148 # default value (1000 on most architectures) means a granularity of 1ms
 1149 # (1s/HZ).  Historically, the default was 100, but finer granularity is
 1150 # required for DUMMYNET and other systems on modern hardware.  There are
 1151 # reasonable arguments that HZ should, in fact, be 100 still; consider,
 1152 # that reducing the granularity too much might cause excessive overhead in
 1153 # clock interrupt processing, potentially causing ticks to be missed and thus
 1154 # actually reducing the accuracy of operation.
 1155 
 1156 options         HZ=100
 1157 
 1158 # Enable support for the kernel PLL to use an external PPS signal,
 1159 # under supervision of [x]ntpd(8)
 1160 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
 1161 
 1162 options         PPS_SYNC
 1163 
 1164 
 1165 #####################################################################
 1166 # SCSI DEVICES
 1167 
 1168 # SCSI DEVICE CONFIGURATION
 1169 
 1170 # The SCSI subsystem consists of the `base' SCSI code, a number of
 1171 # high-level SCSI device `type' drivers, and the low-level host-adapter
 1172 # device drivers.  The host adapters are listed in the ISA and PCI
 1173 # device configuration sections below.
 1174 #
 1175 # It is possible to wire down your SCSI devices so that a given bus,
 1176 # target, and LUN always come on line as the same device unit.  In
 1177 # earlier versions the unit numbers were assigned in the order that
 1178 # the devices were probed on the SCSI bus.  This means that if you
 1179 # removed a disk drive, you may have had to rewrite your /etc/fstab
 1180 # file, and also that you had to be careful when adding a new disk
 1181 # as it may have been probed earlier and moved your device configuration
 1182 # around.  (See also option GEOM_VOL for a different solution to this
 1183 # problem.)
 1184 
 1185 # This old behavior is maintained as the default behavior.  The unit
 1186 # assignment begins with the first non-wired down unit for a device
 1187 # type.  For example, if you wire a disk as "da3" then the first
 1188 # non-wired disk will be assigned da4.
 1189 
 1190 # The syntax for wiring down devices is:
 1191 
 1192 hint.scbus.0.at="ahc0"
 1193 hint.scbus.1.at="ahc1"
 1194 hint.scbus.1.bus="0"
 1195 hint.scbus.3.at="ahc2"
 1196 hint.scbus.3.bus="0"
 1197 hint.scbus.2.at="ahc2"
 1198 hint.scbus.2.bus="1"
 1199 hint.da.0.at="scbus0"
 1200 hint.da.0.target="0"
 1201 hint.da.0.unit="0"
 1202 hint.da.1.at="scbus3"
 1203 hint.da.1.target="1"
 1204 hint.da.2.at="scbus2"
 1205 hint.da.2.target="3"
 1206 hint.sa.1.at="scbus1"
 1207 hint.sa.1.target="6"
 1208 
 1209 # "units" (SCSI logical unit number) that are not specified are
 1210 # treated as if specified as LUN 0.
 1211 
 1212 # All SCSI devices allocate as many units as are required.
 1213 
 1214 # The ch driver drives SCSI Media Changer ("jukebox") devices.
 1215 #
 1216 # The da driver drives SCSI Direct Access ("disk") and Optical Media
 1217 # ("WORM") devices.
 1218 #
 1219 # The sa driver drives SCSI Sequential Access ("tape") devices.
 1220 #
 1221 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
 1222 #
 1223 # The ses driver drives SCSI Environment Services ("ses") and
 1224 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
 1225 #
 1226 # The pt driver drives SCSI Processor devices.
 1227 #
 1228 # The sg driver provides a passthrough API that is compatible with the
 1229 # Linux SG driver.  It will work in conjunction with the COMPAT_LINUX
 1230 # option to run linux SG apps.  It can also stand on its own and provide
 1231 # source level API compatiblity for porting apps to FreeBSD.
 1232 #
 1233 # Target Mode support is provided here but also requires that a SIM
 1234 # (SCSI Host Adapter Driver) provide support as well.
 1235 #
 1236 # The targ driver provides target mode support as a Processor type device.
 1237 # It exists to give the minimal context necessary to respond to Inquiry
 1238 # commands. There is a sample user application that shows how the rest
 1239 # of the command support might be done in /usr/share/examples/scsi_target.
 1240 #
 1241 # The targbh driver provides target mode support and exists to respond
 1242 # to incoming commands that do not otherwise have a logical unit assigned
 1243 # to them.
 1244 #
 1245 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
 1246 # configuration as the "pass" driver.
 1247 
 1248 device          scbus           #base SCSI code
 1249 device          ch              #SCSI media changers
 1250 device          da              #SCSI direct access devices (aka disks)
 1251 device          sa              #SCSI tapes
 1252 device          cd              #SCSI CD-ROMs
 1253 device          ses             #SCSI Environmental Services (and SAF-TE)
 1254 device          pt              #SCSI processor
 1255 device          targ            #SCSI Target Mode Code
 1256 device          targbh          #SCSI Target Mode Blackhole Device
 1257 device          pass            #CAM passthrough driver
 1258 device          sg              #Linux SCSI passthrough
 1259 
 1260 # CAM OPTIONS:
 1261 # debugging options:
 1262 # -- NOTE --  If you specify one of the bus/target/lun options, you must
 1263 #             specify them all!
 1264 # CAMDEBUG: When defined enables debugging macros
 1265 # CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
 1266 # CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
 1267 # CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
 1268 # CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
 1269 #                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
 1270 #
 1271 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
 1272 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
 1273 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
 1274 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
 1275 #             queue after a bus reset, and the number of milliseconds to
 1276 #             freeze the device queue after a bus device reset.  This
 1277 #             can be changed at boot and runtime with the
 1278 #             kern.cam.scsi_delay tunable/sysctl.
 1279 options         CAMDEBUG
 1280 options         CAM_DEBUG_BUS=-1
 1281 options         CAM_DEBUG_TARGET=-1
 1282 options         CAM_DEBUG_LUN=-1
 1283 options         CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
 1284 options         CAM_MAX_HIGHPOWER=4
 1285 options         SCSI_NO_SENSE_STRINGS
 1286 options         SCSI_NO_OP_STRINGS
 1287 options         SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
 1288 
 1289 # Options for the CAM CDROM driver:
 1290 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
 1291 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
 1292 #                           enforced if there is I/O waiting for another LUN
 1293 # The compiled in defaults for these variables are 2 and 10 seconds,
 1294 # respectively.
 1295 #
 1296 # These can also be changed on the fly with the following sysctl variables:
 1297 # kern.cam.cd.changer.min_busy_seconds
 1298 # kern.cam.cd.changer.max_busy_seconds
 1299 #
 1300 options         CHANGER_MIN_BUSY_SECONDS=2
 1301 options         CHANGER_MAX_BUSY_SECONDS=10
 1302 
 1303 # Options for the CAM sequential access driver:
 1304 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
 1305 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
 1306 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
 1307 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
 1308 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
 1309 options         SA_IO_TIMEOUT=4
 1310 options         SA_SPACE_TIMEOUT=60
 1311 options         SA_REWIND_TIMEOUT=(2*60)
 1312 options         SA_ERASE_TIMEOUT=(4*60)
 1313 options         SA_1FM_AT_EOD
 1314 
 1315 # Optional timeout for the CAM processor target (pt) device
 1316 # This is specified in seconds.  The default is 60 seconds.
 1317 options         SCSI_PT_DEFAULT_TIMEOUT=60
 1318 
 1319 # Optional enable of doing SES passthrough on other devices (e.g., disks)
 1320 #
 1321 # Normally disabled because a lot of newer SCSI disks report themselves
 1322 # as having SES capabilities, but this can then clot up attempts to build
 1323 # build a topology with the SES device that's on the box these drives
 1324 # are in....
 1325 options         SES_ENABLE_PASSTHROUGH
 1326 
 1327 
 1328 #####################################################################
 1329 # MISCELLANEOUS DEVICES AND OPTIONS
 1330 
 1331 device          pty             #BSD-style compatibility pseudo ttys
 1332 device          nmdm            #back-to-back tty devices
 1333 device          md              #Memory/malloc disk
 1334 device          snp             #Snoop device - to look at pty/vty/etc..
 1335 device          ccd             #Concatenated disk driver
 1336 device          firmware        #firmware(9) support
 1337 
 1338 # Kernel side iconv library
 1339 options         LIBICONV
 1340 
 1341 # Size of the kernel message buffer.  Should be N * pagesize.
 1342 options         MSGBUF_SIZE=40960
 1343 
 1344 
 1345 #####################################################################
 1346 # HARDWARE DEVICE CONFIGURATION
 1347 
 1348 # For ISA the required hints are listed.
 1349 # EISA, MCA, PCI, CardBus, SD/MMC and pccard are self identifying buses, so
 1350 # no hints are needed.
 1351 
 1352 #
 1353 # Mandatory devices:
 1354 #
 1355 
 1356 # These options are valid for other keyboard drivers as well.
 1357 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1358 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1359 
 1360 options         FB_DEBUG                # Frame buffer debugging
 1361 
 1362 device          splash                  # Splash screen and screen saver support
 1363 
 1364 # Various screen savers.
 1365 device          blank_saver
 1366 device          daemon_saver
 1367 device          dragon_saver
 1368 device          fade_saver
 1369 device          fire_saver
 1370 device          green_saver
 1371 device          logo_saver
 1372 device          rain_saver
 1373 device          snake_saver
 1374 device          star_saver
 1375 device          warp_saver
 1376 
 1377 # The syscons console driver (SCO color console compatible).
 1378 device          sc
 1379 hint.sc.0.at="isa"
 1380 options         MAXCONS=16              # number of virtual consoles
 1381 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1382 options         SC_DFLT_FONT            # compile font in
 1383 makeoptions     SC_DFLT_FONT=cp850
 1384 options         SC_DISABLE_KDBKEY       # disable `debug' key
 1385 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1386 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1387 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1388 options         SC_PIXEL_MODE           # add support for the raster text mode
 1389 
 1390 # The following options will let you change the default colors of syscons.
 1391 options         SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
 1392 options         SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
 1393 options         SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
 1394 options         SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
 1395 
 1396 # The following options will let you change the default behaviour of
 1397 # cut-n-paste feature
 1398 options         SC_CUT_SPACES2TABS      # convert leading spaces into tabs
 1399 options         SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
 1400                                         # (default is single space - \"x20\")
 1401 
 1402 # If you have a two button mouse, you may want to add the following option
 1403 # to use the right button of the mouse to paste text.
 1404 options         SC_TWOBUTTON_MOUSE
 1405 
 1406 # You can selectively disable features in syscons.
 1407 options         SC_NO_CUTPASTE
 1408 options         SC_NO_FONT_LOADING
 1409 options         SC_NO_HISTORY
 1410 options         SC_NO_MODE_CHANGE
 1411 options         SC_NO_SYSMOUSE
 1412 options         SC_NO_SUSPEND_VTYSWITCH
 1413 
 1414 # `flags' for sc
 1415 #       0x80    Put the video card in the VESA 800x600 dots, 16 color mode
 1416 #       0x100   Probe for a keyboard device periodically if one is not present
 1417 
 1418 # Enable experimental features of the syscons terminal emulator (teken).
 1419 options         TEKEN_UTF8              # UTF-8 output handling
 1420 options         TEKEN_XTERM             # xterm-style terminal emulation
 1421 
 1422 #
 1423 # Optional devices:
 1424 #
 1425 
 1426 #
 1427 # SCSI host adapters:
 1428 #
 1429 # adv: All Narrow SCSI bus AdvanSys controllers.
 1430 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1431 # aha: Adaptec 154x/1535/1640
 1432 # ahb: Adaptec 174x EISA controllers
 1433 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
 1434 #      19160x/29160x, aic7770/aic78xx
 1435 # ahd: Adaptec 29320/39320 Controllers.
 1436 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
 1437 # amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
 1438 #      such as the Tekram DC-390(T).
 1439 # bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
 1440 #      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
 1441 # esp: NCR53c9x.  Only for SBUS hardware right now.
 1442 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
 1443 #      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
 1444 #      ISP 12160 Ultra3 SCSI,
 1445 #      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
 1446 #      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
 1447 #      Qlogic ISP 2322 and ISP 6322 2Gb Fibre Channel host adapters.
 1448 # ispfw: Firmware module for Qlogic host adapters
 1449 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
 1450 #      or FC9x9 Fibre Channel host adapters.
 1451 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
 1452 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
 1453 #      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
 1454 #      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
 1455 #      53C1010-33, 53C1010-66.
 1456 # trm: Tekram DC395U/UW/F DC315U adapters.
 1457 # wds: WD7000
 1458 
 1459 #
 1460 # Note that the order is important in order for Buslogic ISA/EISA cards to be
 1461 # probed correctly.
 1462 #
 1463 device          bt
 1464 hint.bt.0.at="isa"
 1465 hint.bt.0.port="0x330"
 1466 device          adv
 1467 hint.adv.0.at="isa"
 1468 device          adw
 1469 device          aha
 1470 hint.aha.0.at="isa"
 1471 device          aic
 1472 hint.aic.0.at="isa"
 1473 device          ahb
 1474 device          ahc
 1475 device          ahd
 1476 device          amd
 1477 device          esp
 1478 device          iscsi_initiator
 1479 device          isp
 1480 hint.isp.0.disable="1"
 1481 hint.isp.0.role="3"
 1482 hint.isp.0.prefer_iomap="1"
 1483 hint.isp.0.prefer_memmap="1"
 1484 hint.isp.0.fwload_disable="1"
 1485 hint.isp.0.ignore_nvram="1"
 1486 hint.isp.0.fullduplex="1"
 1487 hint.isp.0.topology="lport"
 1488 hint.isp.0.topology="nport"
 1489 hint.isp.0.topology="lport-only"
 1490 hint.isp.0.topology="nport-only"
 1491 # we can't get u_int64_t types, nor can we get strings if it's got
 1492 # a leading 0x, hence this silly dodge.
 1493 hint.isp.0.portwnn="w50000000aaaa0000"
 1494 hint.isp.0.nodewnn="w50000000aaaa0001"
 1495 device          ispfw
 1496 device          mpt
 1497 device          ncr
 1498 device          sym
 1499 device          trm
 1500 device          wds
 1501 hint.wds.0.at="isa"
 1502 hint.wds.0.port="0x350"
 1503 hint.wds.0.irq="11"
 1504 hint.wds.0.drq="6"
 1505 
 1506 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1507 # controllers that have it configured only if this option is set. Unfortunately,
 1508 # this doesn't work on some motherboards, which prevents it from being the
 1509 # default.
 1510 options         AHC_ALLOW_MEMIO
 1511 
 1512 # Dump the contents of the ahc controller configuration PROM.
 1513 options         AHC_DUMP_EEPROM
 1514 
 1515 # Bitmap of units to enable targetmode operations.
 1516 options         AHC_TMODE_ENABLE
 1517 
 1518 # Compile in Aic7xxx Debugging code.
 1519 options         AHC_DEBUG
 1520 
 1521 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
 1522 options         AHC_DEBUG_OPTS
 1523 
 1524 # Print register bitfields in debug output.  Adds ~128k to driver
 1525 # See ahc(4).
 1526 options         AHC_REG_PRETTY_PRINT
 1527 
 1528 # Compile in aic79xx debugging code.
 1529 options         AHD_DEBUG
 1530 
 1531 # Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
 1532 options         AHD_DEBUG_OPTS=0xFFFFFFFF
 1533 
 1534 # Print human-readable register definitions when debugging
 1535 options         AHD_REG_PRETTY_PRINT
 1536 
 1537 # Bitmap of units to enable targetmode operations.
 1538 options         AHD_TMODE_ENABLE
 1539 
 1540 # The adw driver will attempt to use memory mapped I/O for all PCI
 1541 # controllers that have it configured only if this option is set.
 1542 options         ADW_ALLOW_MEMIO
 1543 
 1544 # Options used in dev/iscsi (Software iSCSI stack)
 1545 #
 1546 options         ISCSI_INITIATOR_DEBUG=9
 1547 
 1548 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
 1549 #
 1550 #       ISP_TARGET_MODE         -       enable target mode operation
 1551 #
 1552 options         ISP_TARGET_MODE=1
 1553 #
 1554 #       ISP_DEFAULT_ROLES       -       default role
 1555 #               none=0
 1556 #               target=1
 1557 #               initiator=2
 1558 #               both=3                  (not supported currently)
 1559 #
 1560 options         ISP_DEFAULT_ROLES=2
 1561 
 1562 # Options used in dev/sym/ (Symbios SCSI driver).
 1563 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 1564                                         # Allows the ncr to take precedence
 1565                                         # 1 (1<<0) -> 810a, 860
 1566                                         # 2 (1<<1) -> 825a, 875, 885, 895
 1567                                         # 4 (1<<2) -> 895a, 896, 1510d
 1568 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 1569                                         # disabled:0 (default), enabled:1
 1570 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 1571                                         # disabled:0, enabled:1 (default)
 1572 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 1573                                         # default:8, range:[1..64]
 1574 
 1575 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
 1576 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 1577 # The DPT controllers are commonly re-licensed under other brand-names -
 1578 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 1579 # Compaq are actually DPT controllers.
 1580 #
 1581 # See src/sys/dev/dpt for debugging and other subtle options.
 1582 #   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
 1583 #                           instruments are enabled.  The tools in
 1584 #                           /usr/sbin/dpt_* assume these to be enabled.
 1585 #   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
 1586 #                           If you ant the driver to handle timeouts, enable
 1587 #                           this option.  If your system is very busy, this
 1588 #                           option will create more trouble than solve.
 1589 #   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
 1590 #                           wait when timing out with the above option.
 1591 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 1592 #  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
 1593 #                           any interrupt that got lost.  Seems to help in some
 1594 #                           DPT-firmware/Motherboard combinations.  Minimal
 1595 #                           cost, great benefit.
 1596 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 1597 #                           instead of fudging it.  Only enable this if you
 1598 #                           are 100% certain you need it.
 1599 
 1600 device          dpt
 1601 
 1602 # DPT options
 1603 #!CAM# options  DPT_MEASURE_PERFORMANCE
 1604 #!CAM# options  DPT_HANDLE_TIMEOUTS
 1605 options         DPT_TIMEOUT_FACTOR=4
 1606 options         DPT_LOST_IRQ
 1607 options         DPT_RESET_HBA
 1608 
 1609 #
 1610 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 1611 # These controllers have a SCSI-like interface, and require the
 1612 # CAM infrastructure.
 1613 #
 1614 device          ciss
 1615 
 1616 #
 1617 # Intel Integrated RAID controllers.
 1618 # This driver was developed and is maintained by Intel.  Contacts
 1619 # at Intel for this driver are
 1620 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 1621 # "Leubner, Achim" <achim.leubner@intel.com>.
 1622 #
 1623 device          iir
 1624 
 1625 #
 1626 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 1627 # firmware.  These controllers have a SCSI-like interface, and require
 1628 # the CAM infrastructure.
 1629 #
 1630 device          mly
 1631 
 1632 #
 1633 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1634 # one entry is needed; the code will find and configure all supported
 1635 # controllers.
 1636 #
 1637 device          ida             # Compaq Smart RAID
 1638 device          mlx             # Mylex DAC960
 1639 device          amr             # AMI MegaRAID
 1640 device          amrp            # SCSI Passthrough interface (optional, CAM req.)
 1641 device          mfi             # LSI MegaRAID SAS
 1642 device          mfip            # LSI MegaRAID SAS passthrough, requires CAM
 1643 options         MFI_DEBUG
 1644 
 1645 #
 1646 # 3ware ATA RAID
 1647 #
 1648 device          twe             # 3ware ATA RAID
 1649 
 1650 #
 1651 # Serial ATA host controllers:
 1652 #
 1653 # ahci: Advanced Host Controller Interface (AHCI) compatible
 1654 # mvs:  Marvell 88SX50XX/88SX60XX/88SX70XX/SoC controllers
 1655 # siis: SiliconImage SiI3124/SiI3132/SiI3531 controllers
 1656 #
 1657 # These drivers are part of cam(4) subsystem. They supersede less featured
 1658 # ata(4) subsystem drivers, supporting same hardware.
 1659 
 1660 device          ahci
 1661 device          mvs
 1662 device          siis
 1663 
 1664 #
 1665 # The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
 1666 # devices. You only need one "device ata" for it to find all
 1667 # PCI and PC Card ATA/ATAPI devices on modern machines.
 1668 # Alternatively, individual bus and chipset drivers may be chosen by using
 1669 # the 'atacore' driver then selecting the drivers on a per vendor basis.
 1670 # For example to build a system which only supports a VIA chipset,
 1671 # omit 'ata' and include the 'atacore', 'atapci' and 'atavia' drivers.
 1672 device          ata
 1673 device          atadisk         # ATA disk drives
 1674 device          ataraid         # ATA RAID drives
 1675 device          atapicd         # ATAPI CDROM drives
 1676 device          atapifd         # ATAPI floppy drives
 1677 device          atapist         # ATAPI tape drives
 1678 device          atapicam        # emulate ATAPI devices as SCSI ditto via CAM
 1679                                 # needs CAM to be present (scbus & pass)
 1680 
 1681 # Modular ATA
 1682 #device         atacore         # Core ATA functionality
 1683 #device         atacard         # CARDBUS support
 1684 #device         atabus          # PC98 cbus support
 1685 #device         ataisa          # ISA bus support
 1686 #device         atapci          # PCI bus support; only generic chipset support
 1687 
 1688 # PCI ATA chipsets
 1689 #device         ataahci         # AHCI SATA
 1690 #device         ataacard        # ACARD
 1691 #device         ataacerlabs     # Acer Labs Inc. (ALI)
 1692 #device         ataadaptec      # Adaptec
 1693 #device         ataamd          # American Micro Devices (AMD)
 1694 #device         ataati          # ATI
 1695 #device         atacenatek      # Cenatek
 1696 #device         atacypress      # Cypress
 1697 #device         atacyrix        # Cyrix
 1698 #device         atahighpoint    # HighPoint
 1699 #device         ataintel        # Intel
 1700 #device         ataite          # Integrated Technology Inc. (ITE)
 1701 #device         atajmicron      # JMicron
 1702 #device         atamarvell      # Marvell
 1703 #device         atamicron       # Micron
 1704 #device         atanational     # National
 1705 #device         atanetcell      # NetCell
 1706 #device         atanvidia       # nVidia
 1707 #device         atapromise      # Promise
 1708 #device         ataserverworks  # ServerWorks
 1709 #device         atasiliconimage # Silicon Image Inc. (SiI) (formerly CMD)
 1710 #device         atasis          # Silicon Integrated Systems Corp.(SiS)
 1711 #device         atavia          # VIA Technologies Inc.
 1712 
 1713 #
 1714 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
 1715 hint.ata.0.at="isa"
 1716 hint.ata.0.port="0x1f0"
 1717 hint.ata.0.irq="14"
 1718 hint.ata.1.at="isa"
 1719 hint.ata.1.port="0x170"
 1720 hint.ata.1.irq="15"
 1721 
 1722 #
 1723 # The following options are valid on the ATA driver:
 1724 #
 1725 # ATA_STATIC_ID:        controller numbering is static ie depends on location
 1726 #                       else the device numbers are dynamically allocated.
 1727 # ATA_REQUEST_TIMEOUT:  the number of seconds to wait for an ATA request
 1728 #                       before timing out.
 1729 # ATA_CAM:              Turn ata(4) subsystem controller drivers into cam(4)
 1730 #                       interface modules. This deprecates all ata(4)
 1731 #                       peripheral device drivers (atadisk, ataraid, atapicd,
 1732 #                       atapifd. atapist, atapicam) and all user-level APIs.
 1733 #                       cam(4) drivers and APIs will be connected instead.
 1734 
 1735 options         ATA_STATIC_ID
 1736 #options        ATA_REQUEST_TIMEOUT=10
 1737 #options        ATA_CAM
 1738 
 1739 #
 1740 # Standard floppy disk controllers and floppy tapes, supports
 1741 # the Y-E DATA External FDD (PC Card)
 1742 #
 1743 device          fdc
 1744 hint.fdc.0.at="isa"
 1745 hint.fdc.0.port="0x3F0"
 1746 hint.fdc.0.irq="6"
 1747 hint.fdc.0.drq="2"
 1748 #
 1749 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1750 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1751 # however.
 1752 options         FDC_DEBUG
 1753 #
 1754 # Activate this line if you happen to have an Insight floppy tape.
 1755 # Probing them proved to be dangerous for people with floppy disks only,
 1756 # so it's "hidden" behind a flag:
 1757 #hint.fdc.0.flags="1"
 1758 
 1759 # Specify floppy devices
 1760 hint.fd.0.at="fdc0"
 1761 hint.fd.0.drive="0"
 1762 hint.fd.1.at="fdc0"
 1763 hint.fd.1.drive="1"
 1764 
 1765 #
 1766 # uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
 1767 #       sab(4) and zs(4) drivers.
 1768 #
 1769 device          uart
 1770 
 1771 # Options for uart(4)
 1772 options         UART_PPS_ON_CTS         # Do time pulse capturing using CTS
 1773                                         # instead of DCD.
 1774 
 1775 # The following hint should only be used for pure ISA devices.  It is not
 1776 # needed otherwise.  Use of hints is strongly discouraged.
 1777 hint.uart.0.at="isa"
 1778 
 1779 # The following 3 hints are used when the UART is a system device (i.e., a
 1780 # console or debug port), but only on platforms that don't have any other
 1781 # means to pass the information to the kernel.  The unit number of the hint
 1782 # is only used to bundle the hints together.  There is no relation to the
 1783 # unit number of the probed UART.
 1784 hint.uart.0.port="0x3f8"
 1785 hint.uart.0.flags="0x10"
 1786 hint.uart.0.baud="115200"
 1787 
 1788 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
 1789 #       0x10    enable console support for this unit.  Other console flags
 1790 #               (if applicable) are ignored unless this is set.  Enabling
 1791 #               console support does not make the unit the preferred console.
 1792 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
 1793 #               specifically, the 0x20 flag can also be set (see above).
 1794 #               Currently, at most one unit can have console support; the
 1795 #               first one (in config file order) with this flag set is
 1796 #               preferred.  Setting this flag for sio0 gives the old behaviour.
 1797 #       0x80    use this port for serial line gdb support in ddb.  Also known
 1798 #               as debug port.
 1799 #
 1800 
 1801 # Options for serial drivers that support consoles:
 1802 options         BREAK_TO_DEBUGGER       # A BREAK on a serial console goes to
 1803                                         # ddb, if available.
 1804 
 1805 # Solaris implements a new BREAK which is initiated by a character
 1806 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1807 # Sun servers by the Remote Console.  There are FreeBSD extentions:
 1808 # CR ~ ^p requests force panic and CR ~ ^r requests a clean reboot.
 1809 options         ALT_BREAK_TO_DEBUGGER
 1810 
 1811 # Serial Communications Controller
 1812 # Supports the Siemens SAB 82532 and Zilog Z8530 multi-channel
 1813 # communications controllers.
 1814 device          scc
 1815 
 1816 # PCI Universal Communications driver
 1817 # Supports various multi port PCI I/O cards.
 1818 device          puc
 1819 
 1820 #
 1821 # Network interfaces:
 1822 #
 1823 # MII bus support is required for some PCI 10/100 ethernet NICs,
 1824 # namely those which use MII-compliant transceivers or implement
 1825 # transceiver control interfaces that operate like an MII. Adding
 1826 # "device miibus" to the kernel config pulls in support for
 1827 # the generic miibus API and all of the PHY drivers, including a
 1828 # generic one for PHYs that aren't specifically handled by an
 1829 # individual driver.
 1830 device          miibus
 1831 
 1832 # an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1833 #       PCI and ISA varieties.
 1834 # ae:   Support for gigabit ethernet adapters based on the Attansic/Atheros
 1835 #       L2 PCI-Express FastEthernet controllers.
 1836 # age:  Support for gigabit ethernet adapters based on the Attansic/Atheros
 1837 #       L1 PCI express gigabit ethernet controllers.
 1838 # alc:  Support for Atheros AR8131/AR8132 PCIe ethernet controllers.
 1839 # ale:  Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers.
 1840 # bce:  Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet
 1841 #       adapters.
 1842 # bfe:  Broadcom BCM4401 Ethernet adapter.
 1843 # bge:  Support for gigabit ethernet adapters based on the Broadcom
 1844 #       BCM570x family of controllers, including the 3Com 3c996-T,
 1845 #       the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
 1846 #       the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1847 # cas:  Sun Cassini/Cassini+ and National Semiconductor DP83065 Saturn
 1848 # cm:   Arcnet SMC COM90c26 / SMC COM90c56
 1849 #       (and SMC COM90c66 in '56 compatibility mode) adapters.
 1850 # dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
 1851 #       and various workalikes including:
 1852 #       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1853 #       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1854 #       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1855 #       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1856 #       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1857 #       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
 1858 #       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
 1859 #       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1860 #       KNE110TX.
 1861 # de:   Digital Equipment DC21040
 1862 # em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
 1863 # igb:  Intel Pro/1000 PCI Express Gigabit Ethernet: 82575 and later adapters.
 1864 # ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
 1865 #       and PC Card devices using these chipsets.
 1866 # ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
 1867 #       Olicom Ethernet PC Card devices.
 1868 # fe:   Fujitsu MB86960A/MB86965A Ethernet
 1869 # fea:  DEC DEFEA EISA FDDI adapter
 1870 # fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
 1871 # fxp:  Intel EtherExpress Pro/100B
 1872 #       (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
 1873 # gem:  Apple GMAC/Sun ERI/Sun GEM
 1874 # hme:  Sun HME (Happy Meal Ethernet)
 1875 # jme:  JMicron JMC260 Fast Ethernet/JMC250 Gigabit Ethernet based adapters.
 1876 # le:   AMD Am7900 LANCE and Am79C9xx PCnet
 1877 # lge:  Support for PCI gigabit ethernet adapters based on the Level 1
 1878 #       LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
 1879 #       SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1880 # msk:  Support for gigabit ethernet adapters based on the Marvell/SysKonnect
 1881 #       Yukon II Gigabit controllers, including 88E8021, 88E8022, 88E8061,
 1882 #       88E8062, 88E8035, 88E8036, 88E8038, 88E8050, 88E8052, 88E8053,
 1883 #       88E8055, 88E8056 and D-Link 560T/550SX.
 1884 # lmc:  Support for the LMC/SBE wide-area network interface cards.
 1885 # my:   Myson Fast Ethernet (MTD80X, MTD89X)
 1886 # nge:  Support for PCI gigabit ethernet adapters based on the National
 1887 #       Semiconductor DP83820 and DP83821 chipset. This includes the
 1888 #       SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
 1889 #       GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the Surecom
 1890 #       EP-320G-TX and the Netgear GA622T.
 1891 # pcn:  Support for PCI fast ethernet adapters based on the AMD Am79c97x
 1892 #       PCnet-FAST, PCnet-FAST+, PCnet-FAST III, PCnet-PRO and PCnet-Home
 1893 #       chipsets. These can also be handled by the le(4) driver if the
 1894 #       pcn(4) driver is left out of the kernel. The le(4) driver does not
 1895 #       support the additional features like the MII bus and burst mode of
 1896 #       the PCnet-FAST and greater chipsets though.
 1897 # re:   RealTek 8139C+/8169/816xS/811xS/8101E PCI/PCIe Ethernet adapter
 1898 # rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
 1899 #       chipset.  Note that the RealTek driver defaults to using programmed
 1900 #       I/O to do register accesses because memory mapped mode seems to cause
 1901 #       severe lockups on SMP hardware.  This driver also supports the
 1902 #       Accton EN1207D `Cheetah' adapter, which uses a chip called
 1903 #       the MPX 5030/5038, which is either a RealTek in disguise or a
 1904 #       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
 1905 #       chipset and is supported by this driver, not the 'vr' driver.
 1906 # sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
 1907 #       Adaptec AIC-6915 "starfire" controller.
 1908 #       This includes dual and quad port cards, as well as one 100baseFX card.
 1909 #       Most of these are 64-bit PCI devices, except for one single port
 1910 #       card which is 32-bit.
 1911 # sge:  Silicon Integrated Systems SiS190/191 Fast/Gigabit Ethernet adapter
 1912 # sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
 1913 #       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
 1914 # sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
 1915 #       This includes the SK-9841 and SK-9842 single port cards (single mode
 1916 #       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
 1917 #       (also single mode and multimode).
 1918 #       The driver will autodetect the number of ports on the card and
 1919 #       attach each one as a separate network interface.
 1920 # sn:   Support for ISA and PC Card Ethernet devices using the
 1921 #       SMC91C90/92/94/95 chips.
 1922 # ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
 1923 #       the D-Link DFE-550TX.
 1924 # stge: Support for gigabit ethernet adapters based on the Sundance/Tamarack
 1925 #       TC9021 family of controllers, including the Sundance ST2021/ST2023,
 1926 #       the Sundance/Tamarack TC9021, the D-Link DL-4000 and ASUS NX1101.
 1927 # ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
 1928 #       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
 1929 #       3Com 3c985, the Netgear GA620 and various others.  Note that you will
 1930 #       probably want to bump up kern.ipc.nmbclusters a lot to use this driver.
 1931 # tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
 1932 #       cards and integrated ethernet controllers.  This includes several
 1933 #       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
 1934 #       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
 1935 #       supports several Olicom 10Mbps and 10/100 boards.
 1936 # tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
 1937 # txp:  Support for 3Com 3cR990 cards with the "Typhoon" chipset
 1938 # vr:   Support for various fast ethernet adapters based on the VIA
 1939 #       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
 1940 #       including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking
 1941 #       Technologies PN102TX, and the AOpen/Acer ALN-320.
 1942 # vx:   3Com 3C590 and 3C595
 1943 # wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
 1944 #       Note: this is not the same as the Winbond W89C940F, which is a
 1945 #       NE2000 clone.
 1946 # wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 1947 #       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 1948 #       bridge with a PCMCIA adapter plugged into it.
 1949 # xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
 1950 #       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
 1951 #       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
 1952 # xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
 1953 #       Etherlink XL cards and integrated controllers.  This includes the
 1954 #       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
 1955 #       Precision desktop machines and the integrated 3c905-TX chips
 1956 #       in Dell Latitude laptop docking stations.
 1957 #       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
 1958 
 1959 # Order for ISA/EISA devices is important here
 1960 
 1961 device          cm
 1962 hint.cm.0.at="isa"
 1963 hint.cm.0.port="0x2e0"
 1964 hint.cm.0.irq="9"
 1965 hint.cm.0.maddr="0xdc000"
 1966 device          ep
 1967 device          ex
 1968 device          fe
 1969 hint.fe.0.at="isa"
 1970 hint.fe.0.port="0x300"
 1971 device          fea
 1972 device          sn
 1973 hint.sn.0.at="isa"
 1974 hint.sn.0.port="0x300"
 1975 hint.sn.0.irq="10"
 1976 device          an
 1977 device          wi
 1978 device          xe
 1979 
 1980 # PCI Ethernet NICs that use the common MII bus controller code.
 1981 device          ae              # Attansic/Atheros L2 FastEthernet
 1982 device          age             # Attansic/Atheros L1 Gigabit Ethernet
 1983 device          alc             # Atheros AR8131/AR8132 Ethernet
 1984 device          ale             # Atheros AR8121/AR8113/AR8114 Ethernet
 1985 device          bce             # Broadcom BCM5706/BCM5708 Gigabit Ethernet
 1986 device          bfe             # Broadcom BCM440x 10/100 Ethernet
 1987 device          bge             # Broadcom BCM570xx Gigabit Ethernet
 1988 device          cas             # Sun Cassini/Cassini+ and NS DP83065 Saturn
 1989 device          cxgb            # Chelsio T3 10 Gigabit Ethernet
 1990 device          cxgb_t3fw       # Chelsio T3 10 Gigabit Ethernet firmware
 1991 device          dc              # DEC/Intel 21143 and various workalikes
 1992 device          et              # Agere ET1310 10/100/Gigabit Ethernet
 1993 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 1994 hint.fxp.0.prefer_iomap="0"
 1995 device          gem             # Apple GMAC/Sun ERI/Sun GEM
 1996 device          hme             # Sun HME (Happy Meal Ethernet)
 1997 device          jme             # JMicron JMC250 Gigabit/JMC260 Fast Ethernet
 1998 device          lge             # Level 1 LXT1001 gigabit Ethernet
 1999 device          msk             # Marvell/SysKonnect Yukon II Gigabit Ethernet
 2000 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 2001 device          nge             # NatSemi DP83820 gigabit Ethernet
 2002 device          re              # RealTek 8139C+/8169/8169S/8110S
 2003 device          rl              # RealTek 8129/8139
 2004 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 2005 device          sf              # Adaptec AIC-6915 (``Starfire'')
 2006 device          sge             # Silicon Integrated Systems SiS190/191
 2007 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 2008 device          sk              # SysKonnect SK-984x & SK-982x gigabit Ethernet
 2009 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 2010 device          stge            # Sundance/Tamarack TC9021 gigabit Ethernet
 2011 device          tl              # Texas Instruments ThunderLAN
 2012 device          tx              # SMC EtherPower II (83c170 ``EPIC'')
 2013 device          vr              # VIA Rhine, Rhine II
 2014 device          wb              # Winbond W89C840F
 2015 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 2016 
 2017 # PCI Ethernet NICs.
 2018 device          de              # DEC/Intel DC21x4x (``Tulip'')
 2019 device          em              # Intel Pro/1000 Gigabit Ethernet
 2020 device          igb             # Intel Pro/1000 PCIE Gigabit Ethernet
 2021 device          ixgbe           # Intel Pro/10Gbe PCIE Ethernet
 2022 device          le              # AMD Am7900 LANCE and Am79C9xx PCnet
 2023 device          mxge            # Myricom Myri-10G 10GbE NIC
 2024 device          nxge            # Neterion Xframe 10GbE Server/Storage Adapter
 2025 device          ti              # Alteon Networks Tigon I/II gigabit Ethernet
 2026 device          txp             # 3Com 3cR990 (``Typhoon'')
 2027 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 2028 
 2029 # PCI FDDI NICs.
 2030 device          fpa
 2031 
 2032 # PCI WAN adapters.
 2033 device          lmc
 2034 
 2035 # Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
 2036 # This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
 2037 #options        TI_PRIVATE_JUMBOS
 2038 # Turn on the header splitting option for the ti(4) driver firmware.  This
 2039 # only works for Tigon II chips, and has no effect for Tigon I chips.
 2040 options         TI_JUMBO_HDRSPLIT
 2041 
 2042 #
 2043 # Use header splitting feature on bce(4) adapters.
 2044 # This may help to reduce the amount of jumbo-sized memory buffers used.
 2045 #
 2046 options         BCE_JUMBO_HDRSPLIT
 2047 
 2048 # These two options allow manipulating the mbuf cluster size and mbuf size,
 2049 # respectively.  Be very careful with NIC driver modules when changing
 2050 # these from their default values, because that can potentially cause a
 2051 # mismatch between the mbuf size assumed by the kernel and the mbuf size
 2052 # assumed by a module.  The only driver that currently has the ability to
 2053 # detect a mismatch is ti(4).
 2054 options         MCLSHIFT=12     # mbuf cluster shift in bits, 12 == 4KB
 2055 options         MSIZE=512       # mbuf size in bytes
 2056 
 2057 #
 2058 # ATM related options (Cranor version)
 2059 # (note: this driver cannot be used with the HARP ATM stack)
 2060 #
 2061 # The `en' device provides support for Efficient Networks (ENI)
 2062 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 2063 #
 2064 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
 2065 # ATM PCI cards.
 2066 #
 2067 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
 2068 #
 2069 # The `patm' device provides support for IDT77252 based cards like
 2070 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
 2071 #
 2072 # atm device provides generic atm functions and is required for
 2073 # atm devices.
 2074 # NATM enables the netnatm protocol family that can be used to
 2075 # bypass TCP/IP.
 2076 #
 2077 # utopia provides the access to the ATM PHY chips and is required for en,
 2078 # hatm and fatm.
 2079 #
 2080 # the current driver supports only PVC operations (no atm-arp, no multicast).
 2081 # for more details, please read the original documents at
 2082 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 2083 #
 2084 device          atm
 2085 device          en
 2086 device          fatm                    #Fore PCA200E
 2087 device          hatm                    #Fore/Marconi HE155/622
 2088 device          patm                    #IDT77252 cards (ProATM and IDT)
 2089 device          utopia                  #ATM PHY driver
 2090 #options        NATM                    #native ATM
 2091 
 2092 options         LIBMBPOOL               #needed by patm, iatm
 2093 
 2094 #
 2095 # Sound drivers
 2096 #
 2097 # sound: The generic sound driver.
 2098 #
 2099 
 2100 device          sound
 2101 
 2102 #
 2103 # snd_*: Device-specific drivers.
 2104 #
 2105 # The flags of the device tells the device a bit more info about the
 2106 # device that normally is obtained through the PnP interface.
 2107 #       bit  2..0   secondary DMA channel;
 2108 #       bit  4      set if the board uses two dma channels;
 2109 #       bit 15..8   board type, overrides autodetection; leave it
 2110 #                   zero if don't know what to put in (and you don't,
 2111 #                   since this is unsupported at the moment...).
 2112 #
 2113 # snd_ad1816:           Analog Devices AD1816 ISA PnP/non-PnP.
 2114 # snd_als4000:          Avance Logic ALS4000 PCI.
 2115 # snd_atiixp:           ATI IXP 200/300/400 PCI.
 2116 # snd_audiocs:          Crystal Semiconductor CS4231 SBus/EBus. Only
 2117 #                       for sparc64.
 2118 # snd_cmi:              CMedia CMI8338/CMI8738 PCI.
 2119 # snd_cs4281:           Crystal Semiconductor CS4281 PCI.
 2120 # snd_csa:              Crystal Semiconductor CS461x/428x PCI. (except
 2121 #                       4281)
 2122 # snd_ds1:              Yamaha DS-1 PCI.
 2123 # snd_emu10k1:          Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
 2124 # snd_emu10kx:          Creative SoundBlaster Live! and Audigy
 2125 # snd_envy24:           VIA Envy24 and compatible, needs snd_spicds.
 2126 # snd_envy24ht:         VIA Envy24HT and compatible, needs snd_spicds.
 2127 # snd_es137x:           Ensoniq AudioPCI ES137x PCI.
 2128 # snd_ess:              Ensoniq ESS ISA PnP/non-PnP, to be used in
 2129 #                       conjunction with snd_sbc.
 2130 # snd_fm801:            Forte Media FM801 PCI.
 2131 # snd_gusc:             Gravis UltraSound ISA PnP/non-PnP.
 2132 # snd_hda:              Intel High Definition Audio (Controller) and
 2133 #                       compatible.
 2134 # snd_ich:              Intel ICH AC'97 and some more audio controllers
 2135 #                       embedded in a chipset, for example nVidia
 2136 #                       nForce controllers.
 2137 # snd_maestro:          ESS Technology Maestro-1/2x PCI.
 2138 # snd_maestro3:         ESS Technology Maestro-3/Allegro PCI.
 2139 # snd_mss:              Microsoft Sound System ISA PnP/non-PnP.
 2140 # snd_neomagic:         Neomagic 256 AV/ZX PCI.
 2141 # snd_sb16:             Creative SoundBlaster16, to be used in
 2142 #                       conjunction with snd_sbc.
 2143 # snd_sb8:              Creative SoundBlaster (pre-16), to be used in
 2144 #                       conjunction with snd_sbc.
 2145 # snd_sbc:              Creative SoundBlaster ISA PnP/non-PnP.
 2146 #                       Supports ESS and Avance ISA chips as well.
 2147 # snd_spicds:           SPI codec driver, needed by Envy24/Envy24HT drivers.
 2148 # snd_solo:             ESS Solo-1x PCI.
 2149 # snd_t4dwave:          Trident 4DWave DX/NX PCI, Sis 7018 PCI and Acer Labs
 2150 #                       M5451 PCI.
 2151 # snd_via8233:          VIA VT8233x PCI.
 2152 # snd_via82c686:        VIA VT82C686A PCI.
 2153 # snd_vibes:            S3 Sonicvibes PCI.
 2154 # snd_uaudio:           USB audio.
 2155 
 2156 device          snd_ad1816
 2157 device          snd_als4000
 2158 device          snd_atiixp
 2159 #device         snd_audiocs
 2160 device          snd_cmi
 2161 device          snd_cs4281
 2162 device          snd_csa
 2163 device          snd_ds1
 2164 device          snd_emu10k1
 2165 device          snd_emu10kx
 2166 device          snd_envy24
 2167 device          snd_envy24ht
 2168 device          snd_es137x
 2169 device          snd_ess
 2170 device          snd_fm801
 2171 device          snd_gusc
 2172 device          snd_hda
 2173 device          snd_ich
 2174 device          snd_maestro
 2175 device          snd_maestro3
 2176 device          snd_mss
 2177 device          snd_neomagic
 2178 device          snd_sb16
 2179 device          snd_sb8
 2180 device          snd_sbc
 2181 device          snd_solo
 2182 device          snd_spicds
 2183 device          snd_t4dwave
 2184 device          snd_via8233
 2185 device          snd_via82c686
 2186 device          snd_vibes
 2187 device          snd_uaudio
 2188 
 2189 # For non-PnP sound cards:
 2190 hint.pcm.0.at="isa"
 2191 hint.pcm.0.irq="10"
 2192 hint.pcm.0.drq="1"
 2193 hint.pcm.0.flags="0x0"
 2194 hint.sbc.0.at="isa"
 2195 hint.sbc.0.port="0x220"
 2196 hint.sbc.0.irq="5"
 2197 hint.sbc.0.drq="1"
 2198 hint.sbc.0.flags="0x15"
 2199 hint.gusc.0.at="isa"
 2200 hint.gusc.0.port="0x220"
 2201 hint.gusc.0.irq="5"
 2202 hint.gusc.0.drq="1"
 2203 hint.gusc.0.flags="0x13"
 2204 
 2205 #
 2206 # Following options are intended for debugging/testing purposes:
 2207 #
 2208 # SND_DEBUG                    Enable extra debugging code that includes
 2209 #                              sanity checking and possible increase of
 2210 #                              verbosity.
 2211 #
 2212 # SND_DIAGNOSTIC               Simmilar in a spirit of INVARIANTS/DIAGNOSTIC,
 2213 #                              zero tolerance against inconsistencies.
 2214 #
 2215 # SND_FEEDER_MULTIFORMAT       By default, only 16/32 bit feeders are compiled
 2216 #                              in. This options enable most feeder converters
 2217 #                              except for 8bit. WARNING: May bloat the kernel.
 2218 #
 2219 # SND_FEEDER_FULL_MULTIFORMAT  Ditto, but includes 8bit feeders as well.
 2220 #
 2221 # SND_FEEDER_RATE_HP           (feeder_rate) High precision 64bit arithmetic
 2222 #                              as much as possible (the default trying to
 2223 #                              avoid it). Possible slowdown.
 2224 #
 2225 # SND_PCM_64                   (Only applicable for i386/32bit arch)
 2226 #                              Process 32bit samples through 64bit
 2227 #                              integer/arithmetic. Slight increase of dynamic
 2228 #                              range at a cost of possible slowdown.
 2229 #
 2230 # SND_OLDSTEREO                Only 2 channels are allowed, effectively
 2231 #                              disabling multichannel processing.
 2232 #
 2233 options         SND_DEBUG
 2234 options         SND_DIAGNOSTIC
 2235 options         SND_FEEDER_MULTIFORMAT
 2236 options         SND_FEEDER_FULL_MULTIFORMAT
 2237 options         SND_FEEDER_RATE_HP
 2238 options         SND_PCM_64
 2239 options         SND_OLDSTEREO
 2240 
 2241 #
 2242 # IEEE-488 hardware:
 2243 # pcii:         PCIIA cards (uPD7210 based isa cards)
 2244 # tnt4882:      National Instruments PCI-GPIB card.
 2245 
 2246 device  pcii
 2247 hint.pcii.0.at="isa"
 2248 hint.pcii.0.port="0x2e1"
 2249 hint.pcii.0.irq="5"
 2250 hint.pcii.0.drq="1"
 2251 
 2252 device  tnt4882
 2253 
 2254 #
 2255 # Miscellaneous hardware:
 2256 #
 2257 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 2258 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 2259 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 2260 # joy: joystick (including IO DATA PCJOY PC Card joystick)
 2261 # cmx: OmniKey CardMan 4040 pccard smartcard reader
 2262 
 2263 # Mitsumi CD-ROM
 2264 device          mcd
 2265 hint.mcd.0.at="isa"
 2266 hint.mcd.0.port="0x300"
 2267 # for the Sony CDU31/33A CDROM
 2268 device          scd
 2269 hint.scd.0.at="isa"
 2270 hint.scd.0.port="0x230"
 2271 device          joy                     # PnP aware, hints for non-PnP only
 2272 hint.joy.0.at="isa"
 2273 hint.joy.0.port="0x201"
 2274 device          cmx
 2275 
 2276 #
 2277 # The 'bktr' device is a PCI video capture device using the Brooktree
 2278 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 2279 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 2280 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 2281 #
 2282 # options       OVERRIDE_CARD=xxx
 2283 # options       OVERRIDE_TUNER=xxx
 2284 # options       OVERRIDE_MSP=1
 2285 # options       OVERRIDE_DBX=1
 2286 # These options can be used to override the auto detection
 2287 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 2288 # Using sysctl(8) run-time overrides on a per-card basis can be made
 2289 #
 2290 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 2291 # or
 2292 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 2293 # Specifies the default video capture mode.
 2294 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
 2295 # to prevent hangs during initialisation, e.g. VideoLogic Captivator PCI.
 2296 #
 2297 # options       BKTR_USE_PLL
 2298 # This is required for PAL or SECAM boards with a 28Mhz crystal and no 35Mhz
 2299 # crystal, e.g. some new Bt878 cards.
 2300 #
 2301 # options       BKTR_GPIO_ACCESS
 2302 # This enable IOCTLs which give user level access to the GPIO port.
 2303 #
 2304 # options       BKTR_NO_MSP_RESET
 2305 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
 2306 #
 2307 # options       BKTR_430_FX_MODE
 2308 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 2309 #
 2310 # options       BKTR_SIS_VIA_MODE
 2311 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 2312 # needed for some old SiS and VIA chipset motherboards.
 2313 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 2314 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 2315 # As a rough guess, old = before 1998
 2316 #
 2317 # options       BKTR_NEW_MSP34XX_DRIVER
 2318 # Use new, more complete initialization scheme for the msp34* soundchip.
 2319 # Should fix stereo autodetection if the old driver does only output
 2320 # mono sound.
 2321 
 2322 #
 2323 # options       BKTR_USE_FREEBSD_SMBUS
 2324 # Compile with FreeBSD SMBus implementation
 2325 #
 2326 # Brooktree driver has been ported to the new I2C framework. Thus,
 2327 # you'll need to have the following 3 lines in the kernel config.
 2328 #     device smbus
 2329 #     device iicbus
 2330 #     device iicbb
 2331 #     device iicsmb
 2332 # The iic and smb devices are only needed if you want to control other
 2333 # I2C slaves connected to the external connector of some cards.
 2334 #
 2335 device          bktr
 2336  
 2337 #
 2338 # PC Card/PCMCIA and Cardbus
 2339 #
 2340 # cbb: pci/cardbus bridge implementing YENTA interface
 2341 # pccard: pccard slots
 2342 # cardbus: cardbus slots
 2343 device          cbb
 2344 device          pccard
 2345 device          cardbus
 2346 
 2347 #
 2348 # MMC/SD
 2349 #
 2350 # mmc           MMC/SD bus
 2351 # mmcsd         MMC/SD memory card
 2352 # sdhci         Generic PCI SD Host Controller
 2353 #
 2354 device          mmc
 2355 device          mmcsd
 2356 device          sdhci
 2357 
 2358 #
 2359 # SMB bus
 2360 #
 2361 # System Management Bus support is provided by the 'smbus' device.
 2362 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2363 # which is a child of the 'smbus' device.
 2364 #
 2365 # Supported devices:
 2366 # smb           standard I/O through /dev/smb*
 2367 #
 2368 # Supported SMB interfaces:
 2369 # iicsmb        I2C to SMB bridge with any iicbus interface
 2370 # bktr          brooktree848 I2C hardware interface
 2371 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2372 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2373 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2374 # viapm         VIA VT82C586B/596B/686A and VT8233 Power Management Unit
 2375 # amdpm         AMD 756 Power Management Unit
 2376 # amdsmb        AMD 8111 SMBus 2.0 Controller
 2377 # nfpm          NVIDIA nForce Power Management Unit
 2378 # nfsmb         NVIDIA nForce2/3/4 MCP SMBus 2.0 Controller
 2379 #
 2380 device          smbus           # Bus support, required for smb below.
 2381 
 2382 device          intpm
 2383 device          alpm
 2384 device          ichsmb
 2385 device          viapm
 2386 device          amdpm
 2387 device          amdsmb
 2388 device          nfpm
 2389 device          nfsmb
 2390 
 2391 device          smb
 2392 
 2393 #
 2394 # I2C Bus
 2395 #
 2396 # Philips i2c bus support is provided by the `iicbus' device.
 2397 #
 2398 # Supported devices:
 2399 # ic    i2c network interface
 2400 # iic   i2c standard io
 2401 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2402 #
 2403 # Supported interfaces:
 2404 # bktr  brooktree848 I2C software interface
 2405 #
 2406 # Other:
 2407 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2408 #
 2409 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2410 device          iicbb
 2411 
 2412 device          ic
 2413 device          iic
 2414 device          iicsmb          # smb over i2c bridge
 2415 
 2416 # I2C peripheral devices
 2417 #
 2418 # ds133x        Dallas Semiconductor DS1337, DS1338 and DS1339 RTC
 2419 # ds1672        Dallas Semiconductor DS1672 RTC
 2420 #
 2421 device          ds133x
 2422 device          ds1672
 2423 
 2424 # Parallel-Port Bus
 2425 #
 2426 # Parallel port bus support is provided by the `ppbus' device.
 2427 # Multiple devices may be attached to the parallel port, devices
 2428 # are automatically probed and attached when found.
 2429 #
 2430 # Supported devices:
 2431 # vpo   Iomega Zip Drive
 2432 #       Requires SCSI disk support ('scbus' and 'da'), best
 2433 #       performance is achieved with ports in EPP 1.9 mode.
 2434 # lpt   Parallel Printer
 2435 # plip  Parallel network interface
 2436 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2437 # pps   Pulse per second Timing Interface
 2438 # lpbb  Philips official parallel port I2C bit-banging interface
 2439 # pcfclock Parallel port clock driver.
 2440 #
 2441 # Supported interfaces:
 2442 # ppc   ISA-bus parallel port interfaces.
 2443 #
 2444 
 2445 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2446                                   # (see flags in ppc(4))
 2447 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2448 options         PERIPH_1284     # Makes your computer act as an IEEE1284
 2449                                 # compliant peripheral
 2450 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2451 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2452 options         LPT_DEBUG       # Printer driver debug
 2453 options         PPC_DEBUG       # Parallel chipset level debug
 2454 options         PLIP_DEBUG      # Parallel network IP interface debug
 2455 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2456 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2457 
 2458 device          ppc
 2459 hint.ppc.0.at="isa"
 2460 hint.ppc.0.irq="7"
 2461 device          ppbus
 2462 device          vpo
 2463 device          lpt
 2464 device          plip
 2465 device          ppi
 2466 device          pps
 2467 device          lpbb
 2468 device          pcfclock
 2469 
 2470 # Kernel BOOTP support
 2471 
 2472 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2473                                 # Requires NFSCLIENT and NFS_ROOT
 2474 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2475 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2476 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2477 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2478 options         BOOTP_BLOCKSIZE=8192 # Override NFS block size
 2479 
 2480 #
 2481 # Add software watchdog routines.
 2482 #
 2483 options         SW_WATCHDOG
 2484 
 2485 #
 2486 # Add the software deadlock resolver thread.
 2487 #
 2488 options         DEADLKRES
 2489 
 2490 #
 2491 # Disable swapping of stack pages.  This option removes all
 2492 # code which actually performs swapping, so it's not possible to turn
 2493 # it back on at run-time.
 2494 #
 2495 # This is sometimes usable for systems which don't have any swap space
 2496 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2497 # "vm.disable_swapspace_pageouts")
 2498 #
 2499 #options        NO_SWAPPING
 2500 
 2501 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2502 # for sendfile(2) that are used to map file VM pages, and normally
 2503 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2504 # typically want about 4 of these for each simultaneous file send.
 2505 #
 2506 options         NSFBUFS=1024
 2507 
 2508 #
 2509 # Enable extra debugging code for locks.  This stores the filename and
 2510 # line of whatever acquired the lock in the lock itself, and change a
 2511 # number of function calls to pass around the relevant data.  This is
 2512 # not at all useful unless you are debugging lock code.  Also note
 2513 # that it is likely to break e.g. fstat(1) unless you recompile your
 2514 # userland with -DDEBUG_LOCKS as well.
 2515 #
 2516 options         DEBUG_LOCKS
 2517 
 2518 
 2519 #####################################################################
 2520 # USB support
 2521 # UHCI controller
 2522 device          uhci
 2523 # OHCI controller
 2524 device          ohci
 2525 # EHCI controller
 2526 device          ehci
 2527 # SL811 Controller
 2528 #device         slhci
 2529 # General USB code (mandatory for USB)
 2530 device          usb
 2531 #
 2532 # USB Double Bulk Pipe devices
 2533 device          udbp
 2534 # USB Fm Radio
 2535 device          ufm
 2536 # Human Interface Device (anything with buttons and dials)
 2537 device          uhid
 2538 # USB keyboard
 2539 device          ukbd
 2540 # USB printer
 2541 device          ulpt
 2542 # USB mass storage driver (Requires scbus and da)
 2543 device          umass
 2544 # USB mass storage driver for device-side mode
 2545 device          usfs
 2546 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
 2547 device          umct
 2548 # USB modem support
 2549 device          umodem
 2550 # USB mouse
 2551 device          ums
 2552 # eGalax USB touch screen
 2553 device          uep
 2554 # Diamond Rio 500 MP3 player
 2555 device          urio
 2556 #
 2557 # USB serial support
 2558 device          ucom
 2559 # USB support for 3G modem cards by Option, Novatel, Huawei and Sierra
 2560 device          u3g
 2561 # USB support for Technologies ARK3116 based serial adapters
 2562 device          uark
 2563 # USB support for Belkin F5U103 and compatible serial adapters
 2564 device          ubsa
 2565 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
 2566 device          uftdi
 2567 # USB support for some Windows CE based serial communication.
 2568 device          uipaq
 2569 # USB support for Prolific PL-2303 serial adapters
 2570 device          uplcom
 2571 # USB support for Silicon Laboratories CP2101/CP2102 based USB serial adapters
 2572 device          uslcom
 2573 # USB Visor and Palm devices
 2574 device          uvisor
 2575 # USB serial support for DDI pocket's PHS
 2576 device          uvscom
 2577 #
 2578 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2579 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2580 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2581 # eval board.
 2582 device          aue
 2583 
 2584 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
 2585 # LinkSys USB200M and various other adapters.
 2586 device          axe
 2587 
 2588 #
 2589 # Devices which communicate using Ethernet over USB, particularly
 2590 # Communication Device Class (CDC) Ethernet specification. Supports
 2591 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
 2592 device          cdce
 2593 #
 2594 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2595 # and Netmate II, and the Belkin F5U111.
 2596 device          cue
 2597 #
 2598 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2599 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2600 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2601 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2602 # and 2104USB, and the Corega USB-T.
 2603 device          kue
 2604 #
 2605 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2606 # and the GREEN HOUSE GH-USB100B.
 2607 device          rue
 2608 #
 2609 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
 2610 device          udav
 2611 #
 2612 # HSxPA devices from Option N.V
 2613 device          uhso
 2614 
 2615 #
 2616 # Ralink Technology RT2501USB/RT2601USB wireless driver
 2617 device          rum
 2618 #
 2619 # Atheros AR5523 wireless driver
 2620 device          uath
 2621 #
 2622 # Ralink Technology RT2500USB wireless driver
 2623 device          ural
 2624 #
 2625 # ZyDas ZD1211/ZD1211B wireless driver
 2626 device          zyd
 2627 
 2628 # 
 2629 # debugging options for the USB subsystem
 2630 #
 2631 options         USB_DEBUG
 2632 options         U3G_DEBUG
 2633 
 2634 # options for ukbd:
 2635 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2636 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2637 
 2638 # options for uplcom:
 2639 options         UPLCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2640                                                 # in milliseconds
 2641 
 2642 # options for uvscom:
 2643 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2644 options         UVSCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2645                                                 # in milliseconds
 2646 
 2647 #####################################################################
 2648 # FireWire support
 2649 
 2650 device          firewire        # FireWire bus code
 2651 device          sbp             # SCSI over Firewire (Requires scbus and da)
 2652 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2653 device          fwe             # Ethernet over FireWire (non-standard!)
 2654 device          fwip            # IP over FireWire (RFC2734 and RFC3146)
 2655 
 2656 #####################################################################
 2657 # dcons support (Dumb Console Device)
 2658 
 2659 device          dcons                   # dumb console driver
 2660 device          dcons_crom              # FireWire attachment
 2661 options         DCONS_BUF_SIZE=16384    # buffer size
 2662 options         DCONS_POLL_HZ=100       # polling rate
 2663 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2664 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2665 
 2666 #####################################################################
 2667 # crypto subsystem
 2668 #
 2669 # This is a port of the OpenBSD crypto framework.  Include this when
 2670 # configuring IPSEC and when you have a h/w crypto device to accelerate
 2671 # user applications that link to OpenSSL.
 2672 #
 2673 # Drivers are ports from OpenBSD with some simple enhancements that have
 2674 # been fed back to OpenBSD.
 2675 
 2676 device          crypto          # core crypto support
 2677 device          cryptodev       # /dev/crypto for access to h/w
 2678 
 2679 device          rndtest         # FIPS 140-2 entropy tester
 2680 
 2681 device          hifn            # Hifn 7951, 7781, etc.
 2682 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2683 options         HIFN_RNDTEST    # enable rndtest support
 2684 
 2685 device          ubsec           # Broadcom 5501, 5601, 58xx
 2686 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2687 options         UBSEC_RNDTEST   # enable rndtest support
 2688 
 2689 #####################################################################
 2690 
 2691 
 2692 #
 2693 # Embedded system options:
 2694 #
 2695 # An embedded system might want to run something other than init.
 2696 options         INIT_PATH=/sbin/init:/stand/sysinstall
 2697 
 2698 # Debug options
 2699 options         BUS_DEBUG       # enable newbus debugging
 2700 options         DEBUG_VFS_LOCKS # enable VFS lock debugging
 2701 options         SOCKBUF_DEBUG   # enable sockbuf last record/mb tail checking
 2702 
 2703 #
 2704 # Verbose SYSINIT
 2705 #
 2706 # Make the SYSINIT process performed by mi_startup() verbose.  This is very
 2707 # useful when porting to a new architecture.  If DDB is also enabled, this
 2708 # will print function names instead of addresses.
 2709 options         VERBOSE_SYSINIT
 2710 
 2711 #####################################################################
 2712 # SYSV IPC KERNEL PARAMETERS
 2713 #
 2714 # Maximum number of entries in a semaphore map.
 2715 options         SEMMAP=31
 2716 
 2717 # Maximum number of System V semaphores that can be used on the system at
 2718 # one time.
 2719 options         SEMMNI=11
 2720 
 2721 # Total number of semaphores system wide
 2722 options         SEMMNS=61
 2723 
 2724 # Total number of undo structures in system
 2725 options         SEMMNU=31
 2726 
 2727 # Maximum number of System V semaphores that can be used by a single process
 2728 # at one time.
 2729 options         SEMMSL=61
 2730 
 2731 # Maximum number of operations that can be outstanding on a single System V
 2732 # semaphore at one time.
 2733 options         SEMOPM=101
 2734 
 2735 # Maximum number of undo operations that can be outstanding on a single
 2736 # System V semaphore at one time.
 2737 options         SEMUME=11
 2738 
 2739 # Maximum number of shared memory pages system wide.
 2740 options         SHMALL=1025
 2741 
 2742 # Maximum size, in bytes, of a single System V shared memory region.
 2743 options         SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
 2744 options         SHMMAXPGS=1025
 2745 
 2746 # Minimum size, in bytes, of a single System V shared memory region.
 2747 options         SHMMIN=2
 2748 
 2749 # Maximum number of shared memory regions that can be used on the system
 2750 # at one time.
 2751 options         SHMMNI=33
 2752 
 2753 # Maximum number of System V shared memory regions that can be attached to
 2754 # a single process at one time.
 2755 options         SHMSEG=9
 2756 
 2757 # Set the amount of time (in seconds) the system will wait before
 2758 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2759 # the system will wait indefinitely until a key is pressed on the
 2760 # console.
 2761 options         PANIC_REBOOT_WAIT_TIME=16
 2762 
 2763 # Attempt to bypass the buffer cache and put data directly into the
 2764 # userland buffer for read operation when O_DIRECT flag is set on the
 2765 # file.  Both offset and length of the read operation must be
 2766 # multiples of the physical media sector size.
 2767 #
 2768 options         DIRECTIO
 2769 
 2770 # Specify a lower limit for the number of swap I/O buffers.  They are
 2771 # (among other things) used when bypassing the buffer cache due to
 2772 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2773 #
 2774 options         NSWBUF_MIN=120
 2775 
 2776 #####################################################################
 2777 
 2778 # More undocumented options for linting.
 2779 # Note that documenting these are not considered an affront.
 2780 
 2781 options         CAM_DEBUG_DELAY
 2782 
 2783 # VFS cluster debugging.
 2784 options         CLUSTERDEBUG
 2785 
 2786 options         DEBUG
 2787 
 2788 # Kernel filelock debugging.
 2789 options         LOCKF_DEBUG
 2790 
 2791 # System V compatible message queues
 2792 # Please note that the values provided here are used to test kernel
 2793 # building.  The defaults in the sources provide almost the same numbers.
 2794 # MSGSSZ must be a power of 2 between 8 and 1024.
 2795 options         MSGMNB=2049     # Max number of chars in queue
 2796 options         MSGMNI=41       # Max number of message queue identifiers
 2797 options         MSGSEG=2049     # Max number of message segments
 2798 options         MSGSSZ=16       # Size of a message segment
 2799 options         MSGTQL=41       # Max number of messages in system
 2800 
 2801 options         NBUF=512        # Number of buffer headers
 2802 
 2803 options         SCSI_NCR_DEBUG
 2804 options         SCSI_NCR_MAX_SYNC=10000
 2805 options         SCSI_NCR_MAX_WIDE=1
 2806 options         SCSI_NCR_MYADDR=7
 2807 
 2808 options         SC_DEBUG_LEVEL=5        # Syscons debug level
 2809 options         SC_RENDER_DEBUG # syscons rendering debugging
 2810 
 2811 options         SHOW_BUSYBUFS   # List buffers that prevent root unmount
 2812 options         VFS_BIO_DEBUG   # VFS buffer I/O debugging
 2813 
 2814 options         KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
 2815 
 2816 # Adaptec Array Controller driver options
 2817 options         AAC_DEBUG       # Debugging levels:
 2818                                 # 0 - quiet, only emit warnings
 2819                                 # 1 - noisy, emit major function
 2820                                 #     points and things done
 2821                                 # 2 - extremely noisy, emit trace
 2822                                 #     items in loops, etc.
 2823 
 2824 # Yet more undocumented options for linting.
 2825 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
 2826 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
 2827 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
 2828 ##options       BKTR_ALLOC_PAGES=(217*4+1)
 2829 options         BROOKTREE_ALLOC_PAGES=(217*4+1)
 2830 options         MAXFILES=999
 2831 

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