The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: 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/6.0/sys/conf/NOTES 151816 2005-10-28 19:20:00Z jhb $
    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 builtin 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 Linux API modules and plus those parts of the sound system I need.
   77 #makeoptions    MODULES_OVERRIDE="linux 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 # Options for the VM subsystem
  114 # L2 cache size (in KB) can be specified in PQ_CACHESIZE
  115 options         PQ_CACHESIZE=512        # color for 512k cache
  116 # Deprecated options supported for backwards compatibility
  117 #options        PQ_NOOPT                # No coloring
  118 #options        PQ_LARGECACHE           # color for 512k cache
  119 #options        PQ_HUGECACHE            # color for 1024k cache
  120 #options        PQ_MEDIUMCACHE          # color for 256k cache
  121 #options        PQ_NORMALCACHE          # color for 64k cache
  122 
  123 # This allows you to actually store this configuration file into
  124 # the kernel binary itself, where it may be later read by saying:
  125 #    strings -n 3 /boot/kernel/kernel | sed -n 's/^___//p' > MYKERNEL
  126 #
  127 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
  128 
  129 options         GEOM_AES                # Don't use, use GEOM_BDE
  130 options         GEOM_APPLE              # Apple partitioning
  131 options         GEOM_BDE                # Disk encryption.
  132 options         GEOM_BSD                # BSD disklabels
  133 options         GEOM_CONCAT             # Disk concatenation.
  134 options         GEOM_ELI                # Disk encryption.
  135 options         GEOM_FOX                # Redundant path mitigation
  136 options         GEOM_GATE               # Userland services.
  137 options         GEOM_GPT                # GPT partitioning
  138 options         GEOM_LABEL              # Providers labelization.
  139 options         GEOM_MBR                # DOS/MBR partitioning
  140 options         GEOM_MIRROR             # Disk mirroring.
  141 options         GEOM_NOP                # Test class.
  142 options         GEOM_PC98               # NEC PC9800 partitioning
  143 options         GEOM_RAID3              # RAID3 functionality.
  144 options         GEOM_SHSEC              # Shared secret.
  145 options         GEOM_STRIPE             # Disk striping.
  146 options         GEOM_SUNLABEL           # Sun/Solaris partitioning
  147 options         GEOM_UZIP               # Read-only compressed disks
  148 options         GEOM_VOL                # Volume names from UFS superblock
  149 options         GEOM_ZERO               # Peformance testing helper.
  150 
  151 #
  152 # The root device and filesystem type can be compiled in;
  153 # this provides a fallback option if the root device cannot
  154 # be correctly guessed by the bootstrap code, or an override if
  155 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
  156 #
  157 options         ROOTDEVNAME=\"ufs:da0s2e\"
  158 
  159 
  160 #####################################################################
  161 # Scheduler options:
  162 #
  163 # Specifying one of SCHED_4BSD or SCHED_ULE is mandatory.  These options
  164 # select which scheduler is compiled in.
  165 #
  166 # SCHED_4BSD is the historical, proven, BSD scheduler.  It has a global run
  167 # queue and no cpu affinity which makes it suboptimal for SMP.  It has very
  168 # good interactivity and priority selection.
  169 #
  170 # SCHED_ULE is a new scheduler that has been designed for SMP and has some
  171 # advantages for UP as well.  It is intended to replace the 4BSD scheduler
  172 # over time.
  173 #
  174 options         SCHED_4BSD
  175 #options        SCHED_ULE
  176 
  177 #####################################################################
  178 # SMP OPTIONS:
  179 #
  180 # SMP enables building of a Symmetric MultiProcessor Kernel.
  181 
  182 # Mandatory:
  183 options         SMP                     # Symmetric MultiProcessor Kernel
  184 
  185 # ADAPTIVE_MUTEXES changes the behavior of blocking mutexes to spin
  186 # if the thread that currently owns the mutex is executing on another
  187 # CPU.  This behaviour is enabled by default, so this option can be used
  188 # to disable it.
  189 options         NO_ADAPTIVE_MUTEXES
  190 
  191 # ADAPTIVE_GIANT causes the Giant lock to also be made adaptive when
  192 # running without NO_ADAPTIVE_MUTEXES.  Normally, because Giant is assumed
  193 # to be held for extended periods, contention on Giant will cause a thread
  194 # to sleep rather than spinning.
  195 options         ADAPTIVE_GIANT
  196 
  197 # MUTEX_NOINLINE forces mutex operations to call functions to perform each
  198 # operation rather than inlining the simple cases.  This can be used to
  199 # shrink the size of the kernel text segment.  Note that this behavior is
  200 # already implied by the INVARIANT_SUPPORT, INVARIANTS, MUTEX_PROFILING,
  201 # and WITNESS options.
  202 options         MUTEX_NOINLINE
  203 
  204 # MUTEX_WAKE_ALL changes the mutex unlock algorithm to wake all waiters
  205 # when a contested mutex is released rather than just awaking the highest
  206 # priority waiter.
  207 options         MUTEX_WAKE_ALL
  208 
  209 # SMP Debugging Options:
  210 #
  211 # PREEMPTION allows the threads that are in the kernel to be preempted
  212 #         by higher priority threads.  It helps with interactivity and
  213 #         allows interrupt threads to run sooner rather than waiting.
  214 #         WARNING! Only tested on alpha, amd64, and i386.
  215 # FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
  216 #         threads.  Its sole use is to expose race conditions and other
  217 #         bugs during development.  Enabling this option will reduce
  218 #         performance and increase the frequency of kernel panics by
  219 #         design.  If you aren't sure that you need it then you don't.
  220 #         Relies on the PREEMPTION option.  DON'T TURN THIS ON.
  221 # MUTEX_DEBUG enables various extra assertions in the mutex code.
  222 # SLEEPQUEUE_PROFILING enables rudimentary profiling of the hash table
  223 #         used to hold active sleep queues.
  224 # TURNSTILE_PROFILING enables rudimentary profiling of the hash table
  225 #         used to hold active lock queues.
  226 # WITNESS enables the witness code which detects deadlocks and cycles
  227 #         during locking operations.
  228 # WITNESS_KDB causes the witness code to drop into the kernel debugger if
  229 #         a lock hierarchy violation occurs or if locks are held when going to
  230 #         sleep.
  231 # WITNESS_SKIPSPIN disables the witness checks on spin mutexes.
  232 options         PREEMPTION
  233 options         FULL_PREEMPTION
  234 options         MUTEX_DEBUG
  235 options         WITNESS
  236 options         WITNESS_KDB
  237 options         WITNESS_SKIPSPIN
  238 
  239 # MUTEX_PROFILING - Profiling mutual exclusion locks (mutexes).  See
  240 # MUTEX_PROFILING(9) for details.
  241 options         MUTEX_PROFILING
  242 # Set the number of buffers and the hash size.  The hash size MUST be larger
  243 # than the number of buffers.  Hash size should be prime.
  244 options         MPROF_BUFFERS="1536"
  245 options         MPROF_HASH_SIZE="1543"
  246 
  247 # Profiling for internal hash tables.
  248 options         SLEEPQUEUE_PROFILING
  249 options         TURNSTILE_PROFILING
  250 
  251 
  252 #####################################################################
  253 # COMPATIBILITY OPTIONS
  254 
  255 #
  256 # Implement system calls compatible with 4.3BSD and older versions of
  257 # FreeBSD.  You probably do NOT want to remove this as much current code
  258 # still relies on the 4.3 emulation.  Note that some architectures that
  259 # are supported by FreeBSD do not include support for certain important
  260 # aspects of this compatibility option, namely those related to the
  261 # signal delivery mechanism.
  262 #
  263 options         COMPAT_43
  264 
  265 # Enable FreeBSD4 compatibility syscalls
  266 options         COMPAT_FREEBSD4
  267 
  268 # Enable FreeBSD5 compatibility syscalls
  269 options         COMPAT_FREEBSD5
  270 
  271 #
  272 # These three options provide support for System V Interface
  273 # Definition-style interprocess communication, in the form of shared
  274 # memory, semaphores, and message queues, respectively.
  275 #
  276 options         SYSVSHM
  277 options         SYSVSEM
  278 options         SYSVMSG
  279 
  280 
  281 #####################################################################
  282 # DEBUGGING OPTIONS
  283 
  284 #
  285 # Compile with kernel debugger related code.
  286 #
  287 options         KDB
  288 
  289 #
  290 # Print a stack trace of the current thread on the console for a panic.
  291 #
  292 options         KDB_TRACE
  293 
  294 #
  295 # Don't enter the debugger for a panic. Intended for unattended operation
  296 # where you may want to enter the debugger from the console, but still want
  297 # the machine to recover from a panic.
  298 #
  299 options         KDB_UNATTENDED
  300 
  301 #
  302 # Enable the ddb debugger backend.
  303 #
  304 options         DDB
  305 
  306 #
  307 # Print the numerical value of symbols in addition to the symbolic
  308 # representation.
  309 #
  310 options         DDB_NUMSYM
  311 
  312 #
  313 # Enable the remote gdb debugger backend.
  314 #
  315 options         GDB
  316 
  317 #
  318 # SYSCTL_DEBUG enables a 'sysctl' debug tree that can be used to dump the
  319 # contents of the registered sysctl nodes on the console.  It is disabled by
  320 # default because it generates excessively verbose consol output that can
  321 # interfere with serial console operation.
  322 #
  323 options         SYSCTL_DEBUG
  324 
  325 #
  326 # DEBUG_MEMGUARD builds and enables memguard(9), a replacement allocator
  327 # for the kernel used to detect modify-after-free scenarios.  See the
  328 # memguard(9) man page for more information on usage.
  329 #
  330 options         DEBUG_MEMGUARD
  331 
  332 #
  333 # KTRACE enables the system-call tracing facility ktrace(2).  To be more
  334 # SMP-friendly, KTRACE uses a worker thread to process most trace events
  335 # asynchronously to the thread generating the event.  This requires a
  336 # pre-allocated store of objects representing trace events.  The
  337 # KTRACE_REQUEST_POOL option specifies the initial size of this store.
  338 # The size of the pool can be adjusted both at boottime and runtime via
  339 # the kern.ktrace_request_pool tunable and sysctl.
  340 #
  341 options         KTRACE                  #kernel tracing
  342 options         KTRACE_REQUEST_POOL=101
  343 
  344 #
  345 # KTR is a kernel tracing mechanism imported from BSD/OS.  Currently it
  346 # has no userland interface aside from a few sysctl's.  It is enabled with
  347 # the KTR option.  KTR_ENTRIES defines the number of entries in the circular
  348 # trace buffer.  KTR_COMPILE defines the mask of events to compile into the
  349 # kernel as defined by the KTR_* constants in <sys/ktr.h>.  KTR_MASK defines the
  350 # initial value of the ktr_mask variable which determines at runtime what
  351 # events to trace.  KTR_CPUMASK determines which CPU's log events, with
  352 # bit X corresponding to cpu X.  KTR_VERBOSE enables dumping of KTR events
  353 # to the console by default.  This functionality can be toggled via the
  354 # debug.ktr_verbose sysctl and defaults to off if KTR_VERBOSE is not defined.
  355 #
  356 options         KTR
  357 options         KTR_ENTRIES=1024
  358 options         KTR_COMPILE=(KTR_INTR|KTR_PROC)
  359 options         KTR_MASK=KTR_INTR
  360 options         KTR_CPUMASK=0x3
  361 options         KTR_VERBOSE
  362 
  363 #
  364 # ALQ(9) is a facilty for the asynchronous queuing of records from the kernel
  365 # to a vnode, and is employed by services such as KTR(4) to produce trace
  366 # files based on a kernel event stream.  Records are written asynchronously
  367 # in a worker thread.
  368 #
  369 options         ALQ
  370 options         KTR_ALQ
  371 
  372 #
  373 # The INVARIANTS option is used in a number of source files to enable
  374 # extra sanity checking of internal structures.  This support is not
  375 # enabled by default because of the extra time it would take to check
  376 # for these conditions, which can only occur as a result of
  377 # programming errors.
  378 #
  379 options         INVARIANTS
  380 
  381 #
  382 # The INVARIANT_SUPPORT option makes us compile in support for
  383 # verifying some of the internal structures.  It is a prerequisite for
  384 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  385 # called.  The intent is that you can set 'INVARIANTS' for single
  386 # source files (by changing the source file or specifying it on the
  387 # command line) if you have 'INVARIANT_SUPPORT' enabled.  Also, if you
  388 # wish to build a kernel module with 'INVARIANTS', then adding
  389 # 'INVARIANT_SUPPORT' to your kernel will provide all the necessary
  390 # infrastructure without the added overhead.
  391 #
  392 options         INVARIANT_SUPPORT
  393 
  394 #
  395 # The DIAGNOSTIC option is used to enable extra debugging information
  396 # from some parts of the kernel.  As this makes everything more noisy,
  397 # it is disabled by default.
  398 #
  399 options         DIAGNOSTIC
  400 
  401 #
  402 # REGRESSION causes optional kernel interfaces necessary only for regression
  403 # testing to be enabled.  These interfaces may constitute security risks
  404 # when enabled, as they permit processes to easily modify aspects of the
  405 # run-time environment to reproduce unlikely or unusual (possibly normally
  406 # impossible) scenarios.
  407 #
  408 options         REGRESSION
  409 
  410 #
  411 # RESTARTABLE_PANICS allows one to continue from a panic as if it were
  412 # a call to the debugger via the Debugger() function instead.  It is only
  413 # useful if a kernel debugger is present.  To restart from a panic, reset
  414 # the panicstr variable to NULL and continue execution.  This option is
  415 # for development use only and should NOT be used in production systems
  416 # to "workaround" a panic.
  417 #
  418 #options        RESTARTABLE_PANICS
  419 
  420 #
  421 # This option let some drivers co-exist that can't co-exist in a running
  422 # system.  This is used to be able to compile all kernel code in one go for
  423 # quality assurance purposes (like this file, which the option takes it name
  424 # from.)
  425 #
  426 options         COMPILING_LINT
  427 
  428 
  429 #####################################################################
  430 # PERFORMANCE MONITORING OPTIONS
  431 
  432 #
  433 # The hwpmc driver that allows the use of in-CPU performance monitoring
  434 # counters for performance monitoring.  The base kernel needs to configured
  435 # with the 'options' line, while the hwpmc device can be either compiled
  436 # in or loaded as a loadable kernel module.
  437 #
  438 device          hwpmc                   # Driver (also a loadable module)
  439 options         HWPMC_HOOKS             # Other necessary kernel hooks
  440 
  441 
  442 #####################################################################
  443 # NETWORKING OPTIONS
  444 
  445 #
  446 # Protocol families:
  447 #  Only the INET (Internet) family is officially supported in FreeBSD.
  448 #
  449 options         INET                    #Internet communications protocols
  450 options         INET6                   #IPv6 communications protocols
  451 options         IPSEC                   #IP security
  452 options         IPSEC_ESP               #IP security (crypto; define w/ IPSEC)
  453 options         IPSEC_DEBUG             #debug for IP security
  454 #
  455 # Set IPSEC_FILTERGIF to force packets coming through a gif tunnel
  456 # to be processed by any configured packet filtering (ipfw, ipf).
  457 # The default is that packets coming from a tunnel are _not_ processed;
  458 # they are assumed trusted.
  459 #
  460 # IPSEC history is preserved for such packets, and can be filtered
  461 # using ipfw(8)'s 'ipsec' keyword, when this option is enabled.
  462 #
  463 #options        IPSEC_FILTERGIF         #filter ipsec packets from a tunnel
  464 
  465 #options        FAST_IPSEC              #new IPsec (cannot define w/ IPSEC)
  466 
  467 options         IPX                     #IPX/SPX communications protocols
  468 options         IPXIP                   #IPX in IP encapsulation (not available)
  469 
  470 options         NCP                     #NetWare Core protocol
  471 
  472 options         NETATALK                #Appletalk communications protocols
  473 options         NETATALKDEBUG           #Appletalk debugging
  474 
  475 #
  476 # SMB/CIFS requester
  477 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  478 # options.
  479 # NETSMBCRYPTO enables support for encrypted passwords.
  480 options         NETSMB                  #SMB/CIFS requester
  481 options         NETSMBCRYPTO            #encrypted password support for SMB
  482 
  483 # mchain library. It can be either loaded as KLD or compiled into kernel
  484 options         LIBMCHAIN
  485 
  486 # libalias library, performing NAT
  487 options         LIBALIAS
  488 
  489 # altq(9). Enable the base part of the hooks with the ALTQ option.
  490 # Individual disciplines must be built into the base system and can not be
  491 # loaded as modules at this point. In order to build a SMP kernel you must
  492 # also have the ALTQ_NOPCC option.
  493 options         ALTQ
  494 options         ALTQ_CBQ        # Class Bases Queueing
  495 options         ALTQ_RED        # Random Early Detection
  496 options         ALTQ_RIO        # RED In/Out
  497 options         ALTQ_HFSC       # Hierarchical Packet Scheduler
  498 options         ALTQ_CDNR       # Traffic conditioner
  499 options         ALTQ_PRIQ       # Priority Queueing
  500 options         ALTQ_NOPCC      # Required for SMP build
  501 options         ALTQ_DEBUG
  502 
  503 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  504 # Individual node types can be enabled with the corresponding option
  505 # listed below; however, this is not strictly necessary as netgraph
  506 # will automatically load the corresponding KLD module if the node type
  507 # is not already compiled into the kernel. Each type below has a
  508 # corresponding man page, e.g., ng_async(8).
  509 options         NETGRAPH                # netgraph(4) system
  510 options         NETGRAPH_DEBUG          # enable extra debugging, this
  511                                         # affects netgraph(4) and nodes
  512 # Node types
  513 options         NETGRAPH_ASYNC
  514 options         NETGRAPH_ATMLLC
  515 options         NETGRAPH_ATM_ATMPIF
  516 options         NETGRAPH_BLUETOOTH              # ng_bluetooth(4)
  517 options         NETGRAPH_BLUETOOTH_BT3C         # ng_bt3c(4)
  518 options         NETGRAPH_BLUETOOTH_H4           # ng_h4(4)
  519 options         NETGRAPH_BLUETOOTH_HCI          # ng_hci(4)
  520 options         NETGRAPH_BLUETOOTH_L2CAP        # ng_l2cap(4)
  521 options         NETGRAPH_BLUETOOTH_SOCKET       # ng_btsocket(4)
  522 options         NETGRAPH_BLUETOOTH_UBT          # ng_ubt(4)
  523 options         NETGRAPH_BLUETOOTH_UBTBCMFW     # ubtbcmfw(4)
  524 options         NETGRAPH_BPF
  525 options         NETGRAPH_BRIDGE
  526 options         NETGRAPH_CISCO
  527 options         NETGRAPH_DEVICE
  528 options         NETGRAPH_ECHO
  529 options         NETGRAPH_EIFACE
  530 options         NETGRAPH_ETHER
  531 options         NETGRAPH_FEC
  532 options         NETGRAPH_FRAME_RELAY
  533 options         NETGRAPH_GIF
  534 options         NETGRAPH_GIF_DEMUX
  535 options         NETGRAPH_HOLE
  536 options         NETGRAPH_IFACE
  537 options         NETGRAPH_IP_INPUT
  538 options         NETGRAPH_IPFW
  539 options         NETGRAPH_KSOCKET
  540 options         NETGRAPH_L2TP
  541 options         NETGRAPH_LMI
  542 # MPPC compression requires proprietary files (not included)
  543 #options        NETGRAPH_MPPC_COMPRESSION
  544 options         NETGRAPH_MPPC_ENCRYPTION
  545 options         NETGRAPH_NETFLOW
  546 options         NETGRAPH_NAT
  547 options         NETGRAPH_ONE2MANY
  548 options         NETGRAPH_PPP
  549 options         NETGRAPH_PPPOE
  550 options         NETGRAPH_PPTPGRE
  551 options         NETGRAPH_RFC1490
  552 options         NETGRAPH_SOCKET
  553 options         NETGRAPH_SPLIT
  554 options         NETGRAPH_SPPP
  555 options         NETGRAPH_TCPMSS
  556 options         NETGRAPH_TEE
  557 options         NETGRAPH_TTY
  558 options         NETGRAPH_UI
  559 options         NETGRAPH_VJC
  560 
  561 # NgATM - Netgraph ATM
  562 options         NGATM_ATM
  563 options         NGATM_ATMBASE
  564 options         NGATM_SSCOP
  565 options         NGATM_SSCFU
  566 options         NGATM_UNI
  567 options         NGATM_CCATM
  568 
  569 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  570 
  571 #
  572 # Network interfaces:
  573 #  The `loop' device is MANDATORY when networking is enabled.
  574 #  The `ether' device provides generic code to handle
  575 #  Ethernets; it is MANDATORY when an Ethernet device driver is
  576 #  configured or token-ring is enabled.
  577 #  The `vlan' device implements the VLAN tagging of Ethernet frames
  578 #  according to IEEE 802.1Q.  It requires `device miibus'.
  579 #  The `wlan' device provides generic code to support 802.11
  580 #  drivers, including host AP mode; it is MANDATORY for the wi,
  581 #  ath, and awi drivers and will eventually be required by all 802.11 drivers.
  582 #  The `wlan_wep', `wlan_tkip', and `wlan_ccmp' devices provide
  583 #  support for WEP, TKIP, and AES-CCMP crypto protocols optionally
  584 #  used with 802.11 devices that depend on the `wlan' module.
  585 #  The `wlan_xauth' device provides support for external (i.e. user-mode)
  586 #  authenticators for use with 802.11 drivers that use the `wlan'
  587 #  module and support 802.1x and/or WPA security protocols.
  588 #  The `wlan_acl' device provides a MAC-based access control mechanism
  589 #  for use with 802.11 drivers operating in ap mode and using the
  590 #  `wlan' module.
  591 #  The `fddi' device provides generic code to support FDDI.
  592 #  The `arcnet' device provides generic code to support Arcnet.
  593 #  The `sppp' device serves a similar role for certain types
  594 #  of synchronous PPP links (like `cx', `ar').
  595 #  The `sl' device implements the Serial Line IP (SLIP) service.
  596 #  The `ppp' device implements the Point-to-Point Protocol.
  597 #  The `bpf' device enables the Berkeley Packet Filter.  Be
  598 #  aware of the legal and administrative consequences of enabling this
  599 #  option.  The number of devices determines the maximum number of
  600 #  simultaneous BPF clients programs runnable.  DHCP requires bpf.
  601 #  The `disc' device implements a minimal network interface,
  602 #  which throws away all packets sent and never receives any.  It is
  603 #  included for testing purposes.  This shows up as the `ds' interface.
  604 #  The `tap' device is a pty-like virtual Ethernet interface
  605 #  The `tun' device implements (user-)ppp and nos-tun
  606 #  The `gif' device implements IPv6 over IP4 tunneling,
  607 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  608 #  IPv6 over IPv6 tunneling.
  609 #  The `gre' device implements two types of IP4 over IP4 tunneling:
  610 #  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
  611 #  The XBONEHACK option allows the same pair of addresses to be configured on
  612 #  multiple gif interfaces.
  613 #  The `faith' device captures packets sent to it and diverts them
  614 #  to the IPv4/IPv6 translation daemon.
  615 #  The `stf' device implements 6to4 encapsulation.
  616 #  The `ef' device provides support for multiple ethernet frame types
  617 #  specified via ETHER_* options. See ef(4) for details.
  618 #
  619 # The pf packet filter consists of three devices:
  620 #  The `pf' device provides /dev/pf and the firewall code itself.
  621 #  The `pflog' device provides the pflog0 interface which logs packets.
  622 #  The `pfsync' device provides the pfsync0 interface used for
  623 #   synchronization of firewall state tables (over the net).
  624 #
  625 # The PPP_BSDCOMP option enables support for compress(1) style entire
  626 # packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
  627 # PPP_FILTER enables code for filtering the ppp data stream and selecting
  628 # events for resetting the demand dial activity timer - requires bpf.
  629 # See pppd(8) for more details.
  630 #
  631 device          ether                   #Generic Ethernet
  632 device          vlan                    #VLAN support (needs miibus)
  633 device          wlan                    #802.11 support
  634 device          wlan_wep                #802.11 WEP support
  635 device          wlan_ccmp               #802.11 CCMP support
  636 device          wlan_tkip               #802.11 TKIP support
  637 device          wlan_xauth              #802.11 external authenticator support
  638 device          wlan_acl                #802.11 MAC ACL support
  639 device          token                   #Generic TokenRing
  640 device          fddi                    #Generic FDDI
  641 device          arcnet                  #Generic Arcnet
  642 device          sppp                    #Generic Synchronous PPP
  643 device          loop                    #Network loopback device
  644 device          bpf                     #Berkeley packet filter
  645 device          disc                    #Discard device (ds0, ds1, etc)
  646 device          tap                     #Virtual Ethernet driver
  647 device          tun                     #Tunnel driver (ppp(8), nos-tun(8))
  648 device          sl                      #Serial Line IP
  649 device          gre                     #IP over IP tunneling
  650 device          if_bridge               #Bridge interface
  651 device          pf                      #PF OpenBSD packet-filter firewall
  652 device          pflog                   #logging support interface for PF
  653 device          pfsync                  #synchronization interface for PF
  654 device          carp                    #Common Address Redundancy Protocol
  655 device          ppp                     #Point-to-point protocol
  656 options         PPP_BSDCOMP             #PPP BSD-compress support
  657 options         PPP_DEFLATE             #PPP zlib/deflate/gzip support
  658 options         PPP_FILTER              #enable bpf filtering (needs bpf)
  659 
  660 device          ef                      # Multiple ethernet frames support
  661 options         ETHER_II                # enable Ethernet_II frame
  662 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  663 options         ETHER_8022              # enable Ethernet_802.2 frame
  664 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  665 
  666 # for IPv6
  667 device          gif                     #IPv6 and IPv4 tunneling
  668 options         XBONEHACK
  669 device          faith                   #for IPv6 and IPv4 translation
  670 device          stf                     #6to4 IPv6 over IPv4 encapsulation
  671 
  672 #
  673 # Internet family options:
  674 #
  675 # MROUTING enables the kernel multicast packet forwarder, which works
  676 # with mrouted(8).
  677 #
  678 # PIM enables Protocol Independent Multicast in the kernel.
  679 # Requires MROUTING enabled.
  680 #
  681 # IPFIREWALL enables support for IP firewall construction, in
  682 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  683 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  684 # limits the number of times a matching entry can be logged.
  685 #
  686 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  687 # and if you do not add other rules during startup to allow access,
  688 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  689 # in /etc/rc.conf when first enabling this feature, then refining the
  690 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  691 # feature works properly.
  692 #
  693 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  694 # allow everything.  Use with care, if a cracker can crash your
  695 # firewall machine, they can get to your protected machines.  However,
  696 # if you are using it as an as-needed filter for specific problems as
  697 # they arise, then this may be for you.  Changing the default to 'allow'
  698 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  699 # out of sync.
  700 #
  701 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''.  It
  702 # depends on IPFIREWALL if compiled into the kernel.
  703 #
  704 # IPFIREWALL_FORWARD enables changing of the packet destination either
  705 # to do some sort of policy routing or transparent proxying.  Used by
  706 # ``ipfw forward''.
  707 #
  708 # IPFIREWALL_FORWARD_EXTENDED enables full packet destination changing
  709 # including redirecting packets to local IP addresses and ports.  All
  710 # redirections apply to locally generated packets too.  Because of this
  711 # great care is required when crafting the ruleset.
  712 #
  713 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  714 # packets without touching the ttl).  This can be useful to hide firewalls
  715 # from traceroute and similar tools.
  716 #
  717 # TCPDEBUG enables code which keeps traces of the TCP state machine
  718 # for sockets with the SO_DEBUG option set, which can then be examined
  719 # using the trpt(8) utility.
  720 #
  721 options         MROUTING                # Multicast routing
  722 options         PIM                     # Protocol Independent Multicast
  723 options         IPFIREWALL              #firewall
  724 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  725 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  726 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  727 options         IPFIREWALL_FORWARD      #packet destination changes
  728 options         IPFIREWALL_FORWARD_EXTENDED     #all packet dest changes
  729 options         IPV6FIREWALL            #firewall for IPv6
  730 options         IPV6FIREWALL_VERBOSE
  731 options         IPV6FIREWALL_VERBOSE_LIMIT=100
  732 options         IPV6FIREWALL_DEFAULT_TO_ACCEPT
  733 options         IPDIVERT                #divert sockets
  734 options         IPFILTER                #ipfilter support
  735 options         IPFILTER_LOG            #ipfilter logging
  736 options         IPFILTER_LOOKUP         #ipfilter pools
  737 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  738 options         IPSTEALTH               #support for stealth forwarding
  739 options         TCPDEBUG
  740 
  741 # The MBUF_STRESS_TEST option enables options which create
  742 # various random failures / extreme cases related to mbuf
  743 # functions.  See mbuf(9) for a list of available test cases.
  744 options         MBUF_STRESS_TEST
  745 
  746 # Statically Link in accept filters
  747 options         ACCEPT_FILTER_DATA
  748 options         ACCEPT_FILTER_HTTP
  749 
  750 # TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
  751 # prevents nmap et al. from identifying the TCP/IP stack, but breaks support
  752 # for RFC1644 extensions and is not recommended for web servers.
  753 #
  754 options         TCP_DROP_SYNFIN         #drop TCP packets with SYN+FIN
  755 
  756 # TCP_SIGNATURE adds support for RFC 2385 (TCP-MD5) digests. These are
  757 # carried in TCP option 19. This option is commonly used to protect
  758 # TCP sessions (e.g. BGP) where IPSEC is not available nor desirable.
  759 # This is enabled on a per-socket basis using the TCP_MD5SIG socket option.
  760 # This requires the use of 'device crypto', 'options FAST_IPSEC' or 'options
  761 # IPSEC', and 'device cryptodev'.
  762 #options        TCP_SIGNATURE           #include support for RFC 2385
  763 
  764 # DUMMYNET enables the "dummynet" bandwidth limiter.  You need IPFIREWALL
  765 # as well.  See dummynet(4) and ipfw(8) for more info.  When you run
  766 # DUMMYNET it is advisable to also have "options HZ=1000" to achieve a
  767 # smoother scheduling of the traffic.
  768 #
  769 options         DUMMYNET
  770 
  771 # BRIDGE enables bridging between ethernet cards -- see bridge(4).
  772 # You can use IPFIREWALL and DUMMYNET together with bridging.
  773 # NOTE: This option is deprecated and will be removed in the future.
  774 #       See if_bridge(4) for an alternative.
  775 #
  776 options         BRIDGE
  777 
  778 # Zero copy sockets support.  This enables "zero copy" for sending and
  779 # receiving data via a socket.  The send side works for any type of NIC,
  780 # the receive side only works for NICs that support MTUs greater than the
  781 # page size of your architecture and that support header splitting.  See
  782 # zero_copy(9) for more details.
  783 options         ZERO_COPY_SOCKETS
  784 
  785 #
  786 # ATM (HARP version) options
  787 #
  788 # ATM_CORE includes the base ATM functionality code.  This must be included
  789 #       for ATM support.
  790 #
  791 # ATM_IP includes support for running IP over ATM.
  792 #
  793 # At least one (and usually only one) of the following signalling managers
  794 # must be included (note that all signalling managers include PVC support):
  795 # ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
  796 # ATM_SPANS includes support for the `spans' signalling manager, which runs
  797 #       the FORE Systems's proprietary SPANS signalling protocol.
  798 # ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
  799 #       which run the ATM Forum UNI 3.x signalling protocols.
  800 #
  801 # The `hfa' driver provides support for the FORE Systems, Inc.
  802 # PCA-200E ATM PCI Adapter.
  803 #
  804 # The `harp' pseudo-driver makes all NATM interface drivers available to HARP.
  805 #
  806 options         ATM_CORE                #core ATM protocol family
  807 options         ATM_IP                  #IP over ATM support
  808 options         ATM_SIGPVC              #SIGPVC signalling manager
  809 options         ATM_SPANS               #SPANS signalling manager
  810 options         ATM_UNI                 #UNI signalling manager
  811 
  812 device          hfa                     #FORE PCA-200E ATM PCI
  813 device          harp                    #Pseudo-interface for NATM
  814 
  815 
  816 #####################################################################
  817 # FILESYSTEM OPTIONS
  818 
  819 #
  820 # Only the root, /usr, and /tmp filesystems need be statically
  821 # compiled; everything else will be automatically loaded at mount
  822 # time.  (Exception: the UFS family--- FFS --- cannot
  823 # currently be demand-loaded.)  Some people still prefer to statically
  824 # compile other filesystems as well.
  825 #
  826 # NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
  827 # buggy, and WILL panic your system if you attempt to do anything with
  828 # them.  They are included here as an incentive for some enterprising
  829 # soul to sit down and fix them.
  830 #
  831 
  832 # One of these is mandatory:
  833 options         FFS                     #Fast filesystem
  834 options         NFSCLIENT               #Network File System client
  835 
  836 # The rest are optional:
  837 options         CD9660                  #ISO 9660 filesystem
  838 options         FDESCFS                 #File descriptor filesystem
  839 options         HPFS                    #OS/2 File system
  840 options         MSDOSFS                 #MS DOS File System (FAT, FAT32)
  841 options         NFSSERVER               #Network File System server
  842 options         NTFS                    #NT File System
  843 options         NULLFS                  #NULL filesystem
  844 # Broken (depends on NCP):
  845 #options        NWFS                    #NetWare filesystem
  846 options         PORTALFS                #Portal filesystem
  847 options         PROCFS                  #Process filesystem (requires PSEUDOFS)
  848 options         PSEUDOFS                #Pseudo-filesystem framework
  849 options         PSEUDOFS_TRACE          #Debugging support for PSEUDOFS
  850 options         SMBFS                   #SMB/CIFS filesystem
  851 options         UDF                     #Universal Disk Format
  852 # Broken (seriously (functionally) broken):
  853 #options        UMAPFS                  #UID map filesystem
  854 options         UNIONFS                 #Union filesystem
  855 # The xFS_ROOT options REQUIRE the associated ``options xFS''
  856 options         NFS_ROOT                #NFS usable as root device
  857 
  858 # Soft updates is a technique for improving filesystem speed and
  859 # making abrupt shutdown less risky.
  860 #
  861 options         SOFTUPDATES
  862 
  863 # Extended attributes allow additional data to be associated with files,
  864 # and is used for ACLs, Capabilities, and MAC labels.
  865 # See src/sys/ufs/ufs/README.extattr for more information.
  866 options         UFS_EXTATTR
  867 options         UFS_EXTATTR_AUTOSTART
  868 
  869 # Access Control List support for UFS filesystems.  The current ACL
  870 # implementation requires extended attribute support, UFS_EXTATTR,
  871 # for the underlying filesystem.
  872 # See src/sys/ufs/ufs/README.acls for more information.
  873 options         UFS_ACL
  874 
  875 # Directory hashing improves the speed of operations on very large
  876 # directories at the expense of some memory.
  877 options         UFS_DIRHASH
  878 
  879 # Make space in the kernel for a root filesystem on a md device.
  880 # Define to the number of kilobytes to reserve for the filesystem.
  881 options         MD_ROOT_SIZE=10
  882 
  883 # Make the md device a potential root device, either with preloaded
  884 # images of type mfs_root or md_root.
  885 options         MD_ROOT
  886 
  887 # Disk quotas are supported when this option is enabled.
  888 options         QUOTA                   #enable disk quotas
  889 
  890 # If you are running a machine just as a fileserver for PC and MAC
  891 # users, using SAMBA or Netatalk, you may consider setting this option
  892 # and keeping all those users' directories on a filesystem that is
  893 # mounted with the suiddir option. This gives new files the same
  894 # ownership as the directory (similar to group). It's a security hole
  895 # if you let these users run programs, so confine it to file-servers
  896 # (but it'll save you lots of headaches in those cases). Root owned
  897 # directories are exempt and X bits are cleared. The suid bit must be
  898 # set on the directory as well; see chmod(1) PC owners can't see/set
  899 # ownerships so they keep getting their toes trodden on. This saves
  900 # you all the support calls as the filesystem it's used on will act as
  901 # they expect: "It's my dir so it must be my file".
  902 #
  903 options         SUIDDIR
  904 
  905 # NFS options:
  906 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
  907 options         NFS_MAXATTRTIMO=60
  908 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
  909 options         NFS_MAXDIRATTRTIMO=60
  910 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
  911 options         NFS_WDELAYHASHSIZ=16    # and with this
  912 options         NFS_DEBUG               # Enable NFS Debugging
  913 
  914 # Coda stuff:
  915 options         CODA                    #CODA filesystem.
  916 device          vcoda                   #coda minicache <-> venus comm.
  917 # Use the old Coda 5.x venus<->kernel interface instead of the new
  918 # realms-aware 6.x protocol.
  919 #options        CODA_COMPAT_5
  920 
  921 #
  922 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
  923 # careful with this - the ext2fs code has a tendency to lag behind
  924 # changes and not be exercised very much, so mounting read/write could
  925 # be dangerous (and even mounting read only could result in panics.)
  926 #
  927 options         EXT2FS
  928 
  929 #
  930 # Add support for the ReiserFS filesystem (used in Linux). Currently,
  931 # this is limited to read-only access.
  932 #
  933 options         REISERFS
  934 
  935 # Use real implementations of the aio_* system calls.  There are numerous
  936 # stability and security issues in the current aio code that make it
  937 # unsuitable for inclusion on machines with untrusted local users.
  938 options         VFS_AIO
  939 
  940 # Cryptographically secure random number generator; /dev/random
  941 device          random
  942 
  943 # The system memory devices; /dev/mem, /dev/kmem
  944 device          mem
  945 
  946 # Optional character code conversion support with LIBICONV.
  947 # Each option requires their base file system and LIBICONV.
  948 options         CD9660_ICONV
  949 options         MSDOSFS_ICONV
  950 options         NTFS_ICONV
  951 options         UDF_ICONV
  952 
  953 # Experimental support for large MS-DOS filesystems.
  954 #
  955 # WARNING: This uses at least 32 bytes of kernel memory (which is not
  956 # reclaimed until the FS is unmounted) for each file on disk to map
  957 # between the 32-bit inode numbers used by VFS and the 64-bit pseudo-inode
  958 # numbers used internally by msdosfs. This is only safe to use in certain
  959 # controlled situations (e.g. read-only FS with less than 1 million files).
  960 # Since the mappings do not persist across unmounts (or reboots), these
  961 # filesystems are not suitable for exporting through NFS, or any other
  962 # application that requires fixed inode numbers.
  963 options         MSDOSFS_LARGE
  964 
  965 
  966 #####################################################################
  967 # POSIX P1003.1B
  968 
  969 # Real time extensions added in the 1993 Posix
  970 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
  971 
  972 options         _KPOSIX_PRIORITY_SCHEDULING
  973 # p1003_1b_semaphores are very experimental,
  974 # user should be ready to assist in debugging if problems arise.
  975 options         P1003_1B_SEMAPHORES
  976 
  977 
  978 #####################################################################
  979 # SECURITY POLICY PARAMETERS
  980 
  981 # Support for Mandatory Access Control (MAC):
  982 options         MAC
  983 options         MAC_BIBA
  984 options         MAC_BSDEXTENDED
  985 options         MAC_DEBUG
  986 options         MAC_IFOFF
  987 options         MAC_LOMAC
  988 options         MAC_MLS
  989 options         MAC_NONE
  990 options         MAC_PARTITION
  991 options         MAC_PORTACL
  992 options         MAC_SEEOTHERUIDS
  993 options         MAC_STUB
  994 options         MAC_TEST
  995 
  996 
  997 #####################################################################
  998 # CLOCK OPTIONS
  999 
 1000 # The granularity of operation is controlled by the kernel option HZ whose
 1001 # default value (100) means a granularity of 10ms (1s/HZ).
 1002 # Some subsystems, such as DUMMYNET, might benefit from a smaller
 1003 # granularity such as 1ms or less, for a smoother scheduling of packets.
 1004 # Consider, however, that reducing the granularity too much might
 1005 # cause excessive overhead in clock interrupt processing,
 1006 # potentially causing ticks to be missed and thus actually reducing
 1007 # the accuracy of operation.
 1008 
 1009 options         HZ=100
 1010 
 1011 # Enable support for the kernel PLL to use an external PPS signal,
 1012 # under supervision of [x]ntpd(8)
 1013 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
 1014 
 1015 options         PPS_SYNC
 1016 
 1017 
 1018 #####################################################################
 1019 # SCSI DEVICES
 1020 
 1021 # SCSI DEVICE CONFIGURATION
 1022 
 1023 # The SCSI subsystem consists of the `base' SCSI code, a number of
 1024 # high-level SCSI device `type' drivers, and the low-level host-adapter
 1025 # device drivers.  The host adapters are listed in the ISA and PCI
 1026 # device configuration sections below.
 1027 #
 1028 # It is possible to wire down your SCSI devices so that a given bus,
 1029 # target, and LUN always come on line as the same device unit.  In
 1030 # earlier versions the unit numbers were assigned in the order that
 1031 # the devices were probed on the SCSI bus.  This means that if you
 1032 # removed a disk drive, you may have had to rewrite your /etc/fstab
 1033 # file, and also that you had to be careful when adding a new disk
 1034 # as it may have been probed earlier and moved your device configuration
 1035 # around.  (See also option GEOM_VOL for a different solution to this
 1036 # problem.)
 1037 
 1038 # This old behavior is maintained as the default behavior.  The unit
 1039 # assignment begins with the first non-wired down unit for a device
 1040 # type.  For example, if you wire a disk as "da3" then the first
 1041 # non-wired disk will be assigned da4.
 1042 
 1043 # The syntax for wiring down devices is:
 1044 
 1045 hint.scbus.0.at="ahc0"
 1046 hint.scbus.1.at="ahc1"
 1047 hint.scbus.1.bus="0"
 1048 hint.scbus.3.at="ahc2"
 1049 hint.scbus.3.bus="0"
 1050 hint.scbus.2.at="ahc2"
 1051 hint.scbus.2.bus="1"
 1052 hint.da.0.at="scbus0"
 1053 hint.da.0.target="0"
 1054 hint.da.0.unit="0"
 1055 hint.da.1.at="scbus3"
 1056 hint.da.1.target="1"
 1057 hint.da.2.at="scbus2"
 1058 hint.da.2.target="3"
 1059 hint.sa.1.at="scbus1"
 1060 hint.sa.1.target="6"
 1061 
 1062 # "units" (SCSI logical unit number) that are not specified are
 1063 # treated as if specified as LUN 0.
 1064 
 1065 # All SCSI devices allocate as many units as are required.
 1066 
 1067 # The ch driver drives SCSI Media Changer ("jukebox") devices.
 1068 #
 1069 # The da driver drives SCSI Direct Access ("disk") and Optical Media
 1070 # ("WORM") devices.
 1071 #
 1072 # The sa driver drives SCSI Sequential Access ("tape") devices.
 1073 #
 1074 # The cd driver drives SCSI Read Only Direct Access ("cd") devices.
 1075 #
 1076 # The ses driver drives SCSI Environment Services ("ses") and
 1077 # SAF-TE ("SCSI Accessible Fault-Tolerant Enclosure") devices.
 1078 #
 1079 # The pt driver drives SCSI Processor devices.
 1080 #
 1081 #
 1082 # Target Mode support is provided here but also requires that a SIM
 1083 # (SCSI Host Adapter Driver) provide support as well.
 1084 #
 1085 # The targ driver provides target mode support as a Processor type device.
 1086 # It exists to give the minimal context necessary to respond to Inquiry
 1087 # commands. There is a sample user application that shows how the rest
 1088 # of the command support might be done in /usr/share/examples/scsi_target.
 1089 #
 1090 # The targbh driver provides target mode support and exists to respond
 1091 # to incoming commands that do not otherwise have a logical unit assigned
 1092 # to them.
 1093 #
 1094 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
 1095 # configuration as the "pass" driver.
 1096 
 1097 device          scbus           #base SCSI code
 1098 device          ch              #SCSI media changers
 1099 device          da              #SCSI direct access devices (aka disks)
 1100 device          sa              #SCSI tapes
 1101 device          cd              #SCSI CD-ROMs
 1102 device          ses             #SCSI Environmental Services (and SAF-TE)
 1103 device          pt              #SCSI processor
 1104 device          targ            #SCSI Target Mode Code
 1105 device          targbh          #SCSI Target Mode Blackhole Device
 1106 device          pass            #CAM passthrough driver
 1107 
 1108 # CAM OPTIONS:
 1109 # debugging options:
 1110 # -- NOTE --  If you specify one of the bus/target/lun options, you must
 1111 #             specify them all!
 1112 # CAMDEBUG: When defined enables debugging macros
 1113 # CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
 1114 # CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
 1115 # CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
 1116 # CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
 1117 #                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
 1118 #
 1119 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
 1120 # CAM_NEW_TRAN_CODE: this is the new transport layer code that will be switched
 1121 #                       to soon
 1122 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
 1123 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
 1124 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
 1125 #             queue after a bus reset, and the number of milliseconds to
 1126 #             freeze the device queue after a bus device reset.  This
 1127 #             can be changed at boot and runtime with the
 1128 #             kern.cam.scsi_delay tunable/sysctl.
 1129 options         CAMDEBUG
 1130 options         CAM_DEBUG_BUS=-1
 1131 options         CAM_DEBUG_TARGET=-1
 1132 options         CAM_DEBUG_LUN=-1
 1133 options         CAM_DEBUG_FLAGS=(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
 1134 options         CAM_MAX_HIGHPOWER=4
 1135 options         SCSI_NO_SENSE_STRINGS
 1136 options         SCSI_NO_OP_STRINGS
 1137 options         SCSI_DELAY=5000 # Be pessimistic about Joe SCSI device
 1138 
 1139 # Options for the CAM CDROM driver:
 1140 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
 1141 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
 1142 #                           enforced if there is I/O waiting for another LUN
 1143 # The compiled in defaults for these variables are 2 and 10 seconds,
 1144 # respectively.
 1145 #
 1146 # These can also be changed on the fly with the following sysctl variables:
 1147 # kern.cam.cd.changer.min_busy_seconds
 1148 # kern.cam.cd.changer.max_busy_seconds
 1149 #
 1150 options         CHANGER_MIN_BUSY_SECONDS=2
 1151 options         CHANGER_MAX_BUSY_SECONDS=10
 1152 
 1153 # Options for the CAM sequential access driver:
 1154 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
 1155 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
 1156 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
 1157 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
 1158 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
 1159 options         SA_IO_TIMEOUT=4
 1160 options         SA_SPACE_TIMEOUT=60
 1161 options         SA_REWIND_TIMEOUT=(2*60)
 1162 options         SA_ERASE_TIMEOUT=(4*60)
 1163 options         SA_1FM_AT_EOD
 1164 
 1165 # Optional timeout for the CAM processor target (pt) device
 1166 # This is specified in seconds.  The default is 60 seconds.
 1167 options         SCSI_PT_DEFAULT_TIMEOUT=60
 1168 
 1169 # Optional enable of doing SES passthrough on other devices (e.g., disks)
 1170 #
 1171 # Normally disabled because a lot of newer SCSI disks report themselves
 1172 # as having SES capabilities, but this can then clot up attempts to build
 1173 # build a topology with the SES device that's on the box these drives
 1174 # are in....
 1175 options         SES_ENABLE_PASSTHROUGH
 1176 
 1177 
 1178 #####################################################################
 1179 # MISCELLANEOUS DEVICES AND OPTIONS
 1180 
 1181 # The `pty' device usually turns out to be ``effectively mandatory'',
 1182 # as it is required for `telnetd', `rlogind', `screen', `emacs', and
 1183 # `xterm', among others.
 1184 
 1185 device          pty             #Pseudo ttys
 1186 device          nmdm            #back-to-back tty devices
 1187 device          md              #Memory/malloc disk
 1188 device          snp             #Snoop device - to look at pty/vty/etc..
 1189 device          ccd             #Concatenated disk driver
 1190 
 1191 # Kernel side iconv library
 1192 options         LIBICONV
 1193 
 1194 # Size of the kernel message buffer.  Should be N * pagesize.
 1195 options         MSGBUF_SIZE=40960
 1196 
 1197 # Maximum size of a tty or pty input buffer.
 1198 options         TTYHOG=8193
 1199 
 1200 
 1201 #####################################################################
 1202 # HARDWARE DEVICE CONFIGURATION
 1203 
 1204 # For ISA the required hints are listed.
 1205 # EISA, MCA, PCI and pccard are self identifying buses, so no hints
 1206 # are needed.
 1207 
 1208 #
 1209 # Mandatory devices:
 1210 #
 1211 
 1212 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
 1213 device          atkbdc
 1214 hint.atkbdc.0.at="isa"
 1215 hint.atkbdc.0.port="0x060"
 1216 
 1217 # The AT keyboard
 1218 device          atkbd
 1219 hint.atkbd.0.at="atkbdc"
 1220 hint.atkbd.0.irq="1"
 1221 
 1222 # Options for atkbd:
 1223 options         ATKBD_DFLT_KEYMAP       # specify the built-in keymap
 1224 makeoptions     ATKBD_DFLT_KEYMAP=jp.106
 1225 
 1226 # These options are valid for other keyboard drivers as well.
 1227 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1228 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1229 
 1230 # `flags' for atkbd:
 1231 #       0x01    Force detection of keyboard, else we always assume a keyboard
 1232 #       0x02    Don't reset keyboard, useful for some newer ThinkPads
 1233 #       0x03    Force detection and avoid reset, might help with certain
 1234 #               dockingstations
 1235 #       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
 1236 
 1237 # PS/2 mouse
 1238 device          psm
 1239 hint.psm.0.at="atkbdc"
 1240 hint.psm.0.irq="12"
 1241 
 1242 # Options for psm:
 1243 options         PSM_HOOKRESUME          #hook the system resume event, useful
 1244                                         #for some laptops
 1245 options         PSM_RESETAFTERSUSPEND   #reset the device at the resume event
 1246 
 1247 # Video card driver for VGA adapters.
 1248 device          vga
 1249 hint.vga.0.at="isa"
 1250 
 1251 # Options for vga:
 1252 # Try the following option if the mouse pointer is not drawn correctly
 1253 # or font does not seem to be loaded properly.  May cause flicker on
 1254 # some systems.
 1255 options         VGA_ALT_SEQACCESS
 1256 
 1257 # If you can dispense with some vga driver features, you may want to
 1258 # use the following options to save some memory.
 1259 #options        VGA_NO_FONT_LOADING     # don't save/load font
 1260 #options        VGA_NO_MODE_CHANGE      # don't change video modes
 1261 
 1262 # Older video cards may require this option for proper operation.
 1263 options         VGA_SLOW_IOACCESS       # do byte-wide i/o's to TS and GDC regs
 1264 
 1265 # The following option probably won't work with the LCD displays.
 1266 options         VGA_WIDTH90             # support 90 column modes
 1267 
 1268 options         FB_DEBUG                # Frame buffer debugging
 1269 
 1270 device          splash                  # Splash screen and screen saver support
 1271 
 1272 # Various screen savers.
 1273 device          blank_saver
 1274 device          daemon_saver
 1275 device          dragon_saver
 1276 device          fade_saver
 1277 device          fire_saver
 1278 device          green_saver
 1279 device          logo_saver
 1280 device          rain_saver
 1281 device          snake_saver
 1282 device          star_saver
 1283 device          warp_saver
 1284 
 1285 # The syscons console driver (sco color console compatible).
 1286 device          sc
 1287 hint.sc.0.at="isa"
 1288 options         MAXCONS=16              # number of virtual consoles
 1289 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1290 options         SC_DFLT_FONT            # compile font in
 1291 makeoptions     SC_DFLT_FONT=cp850
 1292 options         SC_DISABLE_KDBKEY       # disable `debug' key
 1293 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1294 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1295 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1296 options         SC_PIXEL_MODE           # add support for the raster text mode
 1297 
 1298 # The following options will let you change the default colors of syscons.
 1299 options         SC_NORM_ATTR=(FG_GREEN|BG_BLACK)
 1300 options         SC_NORM_REV_ATTR=(FG_YELLOW|BG_GREEN)
 1301 options         SC_KERNEL_CONS_ATTR=(FG_RED|BG_BLACK)
 1302 options         SC_KERNEL_CONS_REV_ATTR=(FG_BLACK|BG_RED)
 1303 
 1304 # The following options will let you change the default behaviour of
 1305 # cut-n-paste feature
 1306 options         SC_CUT_SPACES2TABS      # convert leading spaces into tabs
 1307 options         SC_CUT_SEPCHARS=\"x09\" # set of characters that delimit words
 1308                                         # (default is single space - \"x20\")
 1309 
 1310 # If you have a two button mouse, you may want to add the following option
 1311 # to use the right button of the mouse to paste text.
 1312 options         SC_TWOBUTTON_MOUSE
 1313 
 1314 # You can selectively disable features in syscons.
 1315 options         SC_NO_CUTPASTE
 1316 options         SC_NO_FONT_LOADING
 1317 options         SC_NO_HISTORY
 1318 options         SC_NO_SYSMOUSE
 1319 options         SC_NO_SUSPEND_VTYSWITCH
 1320 
 1321 # `flags' for sc
 1322 #       0x80    Put the video card in the VESA 800x600 dots, 16 color mode
 1323 #       0x100   Probe for a keyboard device periodically if one is not present
 1324 
 1325 #
 1326 # Optional devices:
 1327 #
 1328 
 1329 #
 1330 # SCSI host adapters:
 1331 #
 1332 # adv: All Narrow SCSI bus AdvanSys controllers.
 1333 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1334 # aha: Adaptec 154x/1535/1640
 1335 # ahb: Adaptec 174x EISA controllers
 1336 # ahc: Adaptec 274x/284x/2910/293x/294x/394x/3950x/3960x/398X/4944/
 1337 #      19160x/29160x, aic7770/aic78xx
 1338 # ahd: Adaptec 29320/39320 Controllers.
 1339 # aic: Adaptec 6260/6360, APA-1460 (PC Card), NEC PC9801-100 (C-BUS)
 1340 # amd: Support for the AMD 53C974 SCSI host adapter chip as found on devices
 1341 #      such as the Tekram DC-390(T).
 1342 # bt:  Most Buslogic controllers: including BT-445, BT-54x, BT-64x, BT-74x,
 1343 #      BT-75x, BT-946, BT-948, BT-956, BT-958, SDC3211B, SDC3211F, SDC3222F
 1344 # esp: NCR53c9x.  Only for SBUS hardware right now.
 1345 # isp: Qlogic ISP 1020, 1040 and 1040B PCI SCSI host adapters,
 1346 #      ISP 1240 Dual Ultra SCSI, ISP 1080 and 1280 (Dual) Ultra2,
 1347 #      ISP 12160 Ultra3 SCSI,
 1348 #      Qlogic ISP 2100 and ISP 2200 1Gb Fibre Channel host adapters.
 1349 #      Qlogic ISP 2300 and ISP 2312 2Gb Fibre Channel host adapters.
 1350 # ispfw: Firmware module for Qlogic host adapters
 1351 # mpt: LSI-Logic MPT/Fusion 53c1020 or 53c1030 Ultra4
 1352 #      or FC9x9 Fibre Channel host adapters.
 1353 # ncr: NCR 53C810, 53C825 self-contained SCSI host adapters.
 1354 # sym: Symbios/Logic 53C8XX family of PCI-SCSI I/O processors:
 1355 #      53C810, 53C810A, 53C815, 53C825,  53C825A, 53C860, 53C875,
 1356 #      53C876, 53C885,  53C895, 53C895A, 53C896,  53C897, 53C1510D,
 1357 #      53C1010-33, 53C1010-66.
 1358 # trm: Tekram DC395U/UW/F DC315U adapters.
 1359 # wds: WD7000
 1360 
 1361 #
 1362 # Note that the order is important in order for Buslogic ISA/EISA cards to be
 1363 # probed correctly.
 1364 #
 1365 device          bt
 1366 hint.bt.0.at="isa"
 1367 hint.bt.0.port="0x330"
 1368 device          adv
 1369 hint.adv.0.at="isa"
 1370 device          adw
 1371 device          aha
 1372 hint.aha.0.at="isa"
 1373 device          aic
 1374 hint.aic.0.at="isa"
 1375 device          ahb
 1376 device          ahc
 1377 device          ahd
 1378 device          amd
 1379 device          esp
 1380 device          isp
 1381 hint.isp.0.disable="1"
 1382 hint.isp.0.role="3"
 1383 hint.isp.0.prefer_iomap="1"
 1384 hint.isp.0.prefer_memmap="1"
 1385 hint.isp.0.fwload_disable="1"
 1386 hint.isp.0.ignore_nvram="1"
 1387 hint.isp.0.fullduplex="1"
 1388 hint.isp.0.topology="lport"
 1389 hint.isp.0.topology="nport"
 1390 hint.isp.0.topology="lport-only"
 1391 hint.isp.0.topology="nport-only"
 1392 # we can't get u_int64_t types, nor can we get strings if it's got
 1393 # a leading 0x, hence this silly dodge.
 1394 hint.isp.0.portwnn="w50000000aaaa0000"
 1395 hint.isp.0.nodewnn="w50000000aaaa0001"
 1396 device          ispfw
 1397 device          mpt
 1398 device          ncr
 1399 device          sym
 1400 device          trm
 1401 device          wds
 1402 hint.wds.0.at="isa"
 1403 hint.wds.0.port="0x350"
 1404 hint.wds.0.irq="11"
 1405 hint.wds.0.drq="6"
 1406 
 1407 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1408 # controllers that have it configured only if this option is set. Unfortunately,
 1409 # this doesn't work on some motherboards, which prevents it from being the
 1410 # default.
 1411 options         AHC_ALLOW_MEMIO
 1412 
 1413 # Dump the contents of the ahc controller configuration PROM.
 1414 options         AHC_DUMP_EEPROM
 1415 
 1416 # Bitmap of units to enable targetmode operations.
 1417 options         AHC_TMODE_ENABLE
 1418 
 1419 # Compile in Aic7xxx Debugging code.
 1420 options         AHC_DEBUG
 1421 
 1422 # Aic7xxx driver debugging options. See sys/dev/aic7xxx/aic7xxx.h
 1423 options         AHC_DEBUG_OPTS
 1424 
 1425 # Print register bitfields in debug output.  Adds ~128k to driver
 1426 # See ahc(4).
 1427 options         AHC_REG_PRETTY_PRINT
 1428 
 1429 # Compile in aic79xx debugging code.
 1430 options         AHD_DEBUG
 1431 
 1432 # Aic79xx driver debugging options.  Adds ~215k to driver.  See ahd(4).
 1433 options         AHD_DEBUG_OPTS=0xFFFFFFFF
 1434 
 1435 # Print human-readable register definitions when debugging
 1436 options         AHD_REG_PRETTY_PRINT
 1437 
 1438 # Bitmap of units to enable targetmode operations.
 1439 options         AHD_TMODE_ENABLE
 1440 
 1441 # The adw driver will attempt to use memory mapped I/O for all PCI
 1442 # controllers that have it configured only if this option is set.
 1443 options         ADW_ALLOW_MEMIO
 1444 
 1445 # Options used in dev/isp/ (Qlogic SCSI/FC driver).
 1446 #
 1447 #       ISP_TARGET_MODE         -       enable target mode operation
 1448 #
 1449 options         ISP_TARGET_MODE=1
 1450 
 1451 # Options used in dev/sym/ (Symbios SCSI driver).
 1452 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 1453                                         # Allows the ncr to take precedence
 1454                                         # 1 (1<<0) -> 810a, 860
 1455                                         # 2 (1<<1) -> 825a, 875, 885, 895
 1456                                         # 4 (1<<2) -> 895a, 896, 1510d
 1457 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 1458                                         # disabled:0 (default), enabled:1
 1459 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 1460                                         # disabled:0, enabled:1 (default)
 1461 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 1462                                         # default:8, range:[1..64]
 1463 
 1464 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
 1465 # controllers (SmartRAID V and VI and later).
 1466 # These controllers require the CAM infrastructure.
 1467 #
 1468 device          asr
 1469 
 1470 # The 'dpt' driver provides support for old DPT controllers (http://www.dpt.com/).
 1471 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 1472 # The DPT controllers are commonly re-licensed under other brand-names -
 1473 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 1474 # Compaq are actually DPT controllers.
 1475 #
 1476 # See src/sys/dev/dpt for debugging and other subtle options.
 1477 #   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
 1478 #                           instruments are enabled.  The tools in
 1479 #                           /usr/sbin/dpt_* assume these to be enabled.
 1480 #   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
 1481 #                           If you ant the driver to handle timeouts, enable
 1482 #                           this option.  If your system is very busy, this
 1483 #                           option will create more trouble than solve.
 1484 #   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
 1485 #                           wait when timing out with the above option.
 1486 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 1487 #  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
 1488 #                           any interrupt that got lost.  Seems to help in some
 1489 #                           DPT-firmware/Motherboard combinations.  Minimal
 1490 #                           cost, great benefit.
 1491 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 1492 #                           instead of fudging it.  Only enable this if you
 1493 #                           are 100% certain you need it.
 1494 
 1495 device          dpt
 1496 
 1497 # DPT options
 1498 #!CAM# options  DPT_MEASURE_PERFORMANCE
 1499 #!CAM# options  DPT_HANDLE_TIMEOUTS
 1500 options         DPT_TIMEOUT_FACTOR=4
 1501 options         DPT_LOST_IRQ
 1502 options         DPT_RESET_HBA
 1503 
 1504 #
 1505 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 1506 # These controllers have a SCSI-like interface, and require the
 1507 # CAM infrastructure.
 1508 #
 1509 device          ciss
 1510 
 1511 #
 1512 # Intel Integrated RAID controllers.
 1513 # This driver was developed and is maintained by Intel.  Contacts
 1514 # at Intel for this driver are
 1515 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 1516 # "Leubner, Achim" <achim.leubner@intel.com>.
 1517 #
 1518 device          iir
 1519 
 1520 #
 1521 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 1522 # firmware.  These controllers have a SCSI-like interface, and require
 1523 # the CAM infrastructure.
 1524 #
 1525 device          mly
 1526 
 1527 #
 1528 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1529 # one entry is needed; the code will find and configure all supported
 1530 # controllers.
 1531 #
 1532 device          ida             # Compaq Smart RAID
 1533 device          mlx             # Mylex DAC960
 1534 device          amr             # AMI MegaRAID
 1535 
 1536 #
 1537 # 3ware ATA RAID
 1538 #
 1539 device          twe             # 3ware ATA RAID
 1540 
 1541 #
 1542 # The 'ATA' driver supports all ATA and ATAPI devices, including PC Card
 1543 # devices. You only need one "device ata" for it to find all
 1544 # PCI and PC Card ATA/ATAPI devices on modern machines.
 1545 device          ata
 1546 device          atadisk         # ATA disk drives
 1547 device          ataraid         # ATA RAID drives
 1548 device          atapicd         # ATAPI CDROM drives
 1549 device          atapifd         # ATAPI floppy drives
 1550 device          atapist         # ATAPI tape drives
 1551 device          atapicam        # emulate ATAPI devices as SCSI ditto via CAM
 1552                                 # needs CAM to be present (scbus & pass)
 1553 #
 1554 # For older non-PCI, non-PnPBIOS systems, these are the hints lines to add:
 1555 hint.ata.0.at="isa"
 1556 hint.ata.0.port="0x1f0"
 1557 hint.ata.0.irq="14"
 1558 hint.ata.1.at="isa"
 1559 hint.ata.1.port="0x170"
 1560 hint.ata.1.irq="15"
 1561 
 1562 #
 1563 # The following options are valid on the ATA driver:
 1564 #
 1565 # ATA_STATIC_ID:        controller numbering is static ie depends on location
 1566 #                       else the device numbers are dynamically allocated.
 1567 
 1568 options         ATA_STATIC_ID
 1569 
 1570 #
 1571 # Standard floppy disk controllers and floppy tapes, supports
 1572 # the Y-E DATA External FDD (PC Card)
 1573 #
 1574 device          fdc
 1575 hint.fdc.0.at="isa"
 1576 hint.fdc.0.port="0x3F0"
 1577 hint.fdc.0.irq="6"
 1578 hint.fdc.0.drq="2"
 1579 #
 1580 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1581 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1582 # however.
 1583 options         FDC_DEBUG
 1584 #
 1585 # Activate this line if you happen to have an Insight floppy tape.
 1586 # Probing them proved to be dangerous for people with floppy disks only,
 1587 # so it's "hidden" behind a flag:
 1588 #hint.fdc.0.flags="1"
 1589 
 1590 # Specify floppy devices
 1591 hint.fd.0.at="fdc0"
 1592 hint.fd.0.drive="0"
 1593 hint.fd.1.at="fdc0"
 1594 hint.fd.1.drive="1"
 1595 
 1596 #
 1597 # sio: serial ports (see sio(4)), including support for various
 1598 #      PC Card devices, such as Modem and NICs (see etc/defaults/pccard.conf)
 1599 #
 1600 device          sio
 1601 hint.sio.0.at="isa"
 1602 hint.sio.0.port="0x3F8"
 1603 hint.sio.0.flags="0x10"
 1604 hint.sio.0.irq="4"
 1605 
 1606 # Options for sio:
 1607 options         COM_ESP                 # Code for Hayes ESP.
 1608 options         COM_MULTIPORT           # Code for some cards with shared IRQs.
 1609 options         CONSPEED=115200         # Speed for serial console
 1610                                         # (default 9600).
 1611 
 1612 # `flags' specific to sio(4).  See below for flags used by both sio(4) and
 1613 # uart(4).
 1614 #       0x20    force this unit to be the console (unless there is another
 1615 #               higher priority console).  This replaces the COMCONSOLE option.
 1616 #       0x40    reserve this unit for low level console operations.  Do not
 1617 #               access the device in any normal way.
 1618 # PnP `flags'
 1619 #       0x1     disable probing of this device.  Used to prevent your modem
 1620 #               from being attached as a PnP modem.
 1621 # Other flags for sio that aren't documented in the man page.
 1622 #       0x20000 enable hardware RTS/CTS and larger FIFOs.  Only works for
 1623 #               ST16650A-compatible UARTs.
 1624 
 1625 #
 1626 # uart: newbusified driver for serial interfaces.  It consolidates the sio(4),
 1627 #       sab(4) and zs(4) drivers.
 1628 #
 1629 device          uart
 1630 
 1631 # Options for uart(4)
 1632 options         UART_PPS_ON_CTS         # Do time pulse capturing using CTS
 1633                                         # instead of DCD.
 1634 
 1635 # The following hint should only be used for pure ISA devices.  It is not
 1636 # needed otherwise.  Use of hints is strongly discouraged.
 1637 hint.uart.0.at="isa"
 1638 
 1639 # The following 3 hints are used when the UART is a system device (i.e., a
 1640 # console or debug port), but only on platforms that don't have any other
 1641 # means to pass the information to the kernel.  The unit number of the hint
 1642 # is only used to bundle the hints together.  There is no relation to the
 1643 # unit number of the probed UART.
 1644 hint.uart.0.port="0x3f8"
 1645 hint.uart.0.flags="0x10"
 1646 hint.uart.0.baud="115200"
 1647 
 1648 # `flags' for serial drivers that support consoles like sio(4) and uart(4):
 1649 #       0x10    enable console support for this unit.  Other console flags
 1650 #               (if applicable) are ignored unless this is set.  Enabling
 1651 #               console support does not make the unit the preferred console.
 1652 #               Boot with -h or set boot_serial=YES in the loader.  For sio(4)
 1653 #               specifically, the 0x20 flag can also be set (see above).
 1654 #               Currently, at most one unit can have console support; the
 1655 #               first one (in config file order) with this flag set is
 1656 #               preferred.  Setting this flag for sio0 gives the old behaviour.
 1657 #       0x80    use this port for serial line gdb support in ddb.  Also known
 1658 #               as debug port.
 1659 #
 1660 
 1661 # Options for serial drivers that support consoles:
 1662 options         BREAK_TO_DEBUGGER       # A BREAK on a serial console goes to
 1663                                         # ddb, if available.
 1664 
 1665 # Solaris implements a new BREAK which is initiated by a character
 1666 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1667 # Sun servers by the Remote Console.
 1668 options         ALT_BREAK_TO_DEBUGGER
 1669 
 1670 # PCI Universal Communications driver
 1671 # Supports various single and multi port PCI serial cards. Maybe later
 1672 # also the parallel ports on combination serial/parallel cards. New cards
 1673 # can be added in src/sys/dev/puc/pucdata.c.
 1674 #
 1675 # If the PUC_FASTINTR option is used the driver will try to use fast
 1676 # interrupts. The card must then be the only user of that interrupt.
 1677 # Interrupts cannot be shared when using PUC_FASTINTR.
 1678 device          puc
 1679 options         PUC_FASTINTR
 1680 
 1681 #
 1682 # Network interfaces:
 1683 #
 1684 # MII bus support is required for some PCI 10/100 ethernet NICs,
 1685 # namely those which use MII-compliant transceivers or implement
 1686 # transceiver control interfaces that operate like an MII. Adding
 1687 # "device miibus0" to the kernel config pulls in support for
 1688 # the generic miibus API and all of the PHY drivers, including a
 1689 # generic one for PHYs that aren't specifically handled by an
 1690 # individual driver.
 1691 device          miibus
 1692 
 1693 # an:   Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1694 #       PCI and ISA varieties.
 1695 # awi:  Support for IEEE 802.11 PC Card devices using the AMD Am79C930 and
 1696 #       Harris (Intersil) Chipset with PCnetMobile firmware by AMD.
 1697 # bge:  Support for gigabit ethernet adapters based on the Broadcom
 1698 #       BCM570x family of controllers, including the 3Com 3c996-T,
 1699 #       the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41, and
 1700 #       the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1701 # cm:   Arcnet SMC COM90c26 / SMC COM90c56
 1702 #       (and SMC COM90c66 in '56 compatibility mode) adapters.
 1703 # cnw:  Xircom CNW/Netware Airsurfer PC Card adapter
 1704 # cs:   IBM Etherjet and other Crystal Semi CS89x0-based adapters
 1705 # dc:   Support for PCI fast ethernet adapters based on the DEC/Intel 21143
 1706 #       and various workalikes including:
 1707 #       the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1708 #       AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1709 #       82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1710 #       and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1711 #       replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1712 #       Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110,
 1713 #       SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX,
 1714 #       LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1715 #       KNE110TX.
 1716 # de:   Digital Equipment DC21040
 1717 # em:   Intel Pro/1000 Gigabit Ethernet 82542, 82543, 82544 based adapters.
 1718 # ep:   3Com 3C509, 3C529, 3C556, 3C562D, 3C563D, 3C572, 3C574X, 3C579, 3C589
 1719 #       and PC Card devices using these chipsets.
 1720 # ex:   Intel EtherExpress Pro/10 and other i82595-based adapters,
 1721 #       Olicom Ethernet PC Card devices.
 1722 # fe:   Fujitsu MB86960A/MB86965A Ethernet
 1723 # fea:  DEC DEFEA EISA FDDI adapter
 1724 # fpa:  Support for the Digital DEFPA PCI FDDI. `device fddi' is also needed.
 1725 # fxp:  Intel EtherExpress Pro/100B
 1726 #       (hint of prefer_iomap can be done to prefer I/O instead of Mem mapping)
 1727 # hme:  Sun HME (Happy Meal Ethernet)
 1728 # lge:  Support for PCI gigabit ethernet adapters based on the Level 1
 1729 #       LXT1001 NetCellerator chipset. This includes the D-Link DGE-500SX,
 1730 #       SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1731 # my:   Myson Fast Ethernet (MTD80X, MTD89X)
 1732 # nge:  Support for PCI gigabit ethernet adapters based on the National
 1733 #       Semiconductor DP83820 and DP83821 chipset. This includes the
 1734 #       SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante FriendlyNet
 1735 #       GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the LinkSys
 1736 #       EG1032 and EG1064, the Surecom EP-320G-TX and the Netgear GA622T.
 1737 # pcn:  Support for PCI fast ethernet adapters based on the AMD Am79c97x
 1738 #       chipsets, including the PCnet/FAST, PCnet/FAST+, PCnet/PRO and
 1739 #       PCnet/Home. These were previously handled by the lnc driver (and
 1740 #       still will be if you leave this driver out of the kernel).
 1741 # rl:   Support for PCI fast ethernet adapters based on the RealTek 8129/8139
 1742 #       chipset.  Note that the RealTek driver defaults to using programmed
 1743 #       I/O to do register accesses because memory mapped mode seems to cause
 1744 #       severe lockups on SMP hardware.  This driver also supports the
 1745 #       Accton EN1207D `Cheetah' adapter, which uses a chip called
 1746 #       the MPX 5030/5038, which is either a RealTek in disguise or a
 1747 #       RealTek workalike.  Note that the D-Link DFE-530TX+ uses the RealTek
 1748 #       chipset and is supported by this driver, not the 'vr' driver.
 1749 # sf:   Support for Adaptec Duralink PCI fast ethernet adapters based on the
 1750 #       Adaptec AIC-6915 "starfire" controller.
 1751 #       This includes dual and quad port cards, as well as one 100baseFX card.
 1752 #       Most of these are 64-bit PCI devices, except for one single port
 1753 #       card which is 32-bit.
 1754 # sis:  Support for NICs based on the Silicon Integrated Systems SiS 900,
 1755 #       SiS 7016 and NS DP83815 PCI fast ethernet controller chips.
 1756 # sbsh: Support for Granch SBNI16 SHDSL modem PCI adapters
 1757 # sk:   Support for the SysKonnect SK-984x series PCI gigabit ethernet NICs.
 1758 #       This includes the SK-9841 and SK-9842 single port cards (single mode
 1759 #       and multimode fiber) and the SK-9843 and SK-9844 dual port cards
 1760 #       (also single mode and multimode).
 1761 #       The driver will autodetect the number of ports on the card and
 1762 #       attach each one as a separate network interface.
 1763 # sn:   Support for ISA and PC Card Ethernet devices using the
 1764 #       SMC91C90/92/94/95 chips.
 1765 # ste:  Sundance Technologies ST201 PCI fast ethernet controller, includes
 1766 #       the D-Link DFE-550TX.
 1767 # ti:   Support for PCI gigabit ethernet NICs based on the Alteon Networks
 1768 #       Tigon 1 and Tigon 2 chipsets.  This includes the Alteon AceNIC, the
 1769 #       3Com 3c985, the Netgear GA620 and various others.  Note that you will
 1770 #       probably want to bump up NMBCLUSTERS a lot to use this driver.
 1771 # tl:   Support for the Texas Instruments TNETE100 series 'ThunderLAN'
 1772 #       cards and integrated ethernet controllers.  This includes several
 1773 #       Compaq Netelligent 10/100 cards and the built-in ethernet controllers
 1774 #       in several Compaq Prosignia, Proliant and Deskpro systems.  It also
 1775 #       supports several Olicom 10Mbps and 10/100 boards.
 1776 # tx:   SMC 9432 TX, BTX and FTX cards. (SMC EtherPower II series)
 1777 # txp:  Support for 3Com 3cR990 cards with the "Typhoon" chipset
 1778 # vr:   Support for various fast ethernet adapters based on the VIA
 1779 #       Technologies VT3043 `Rhine I' and VT86C100A `Rhine II' chips,
 1780 #       including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking
 1781 #       Technologies PN102TX, and the AOpen/Acer ALN-320.
 1782 # vx:   3Com 3C590 and 3C595
 1783 # wb:   Support for fast ethernet adapters based on the Winbond W89C840F chip.
 1784 #       Note: this is not the same as the Winbond W89C940F, which is a
 1785 #       NE2000 clone.
 1786 # wi:   Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 1787 #       the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 1788 #       bridge with a PCMCIA adapter plugged into it.
 1789 # xe:   Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller,
 1790 #       Accton Fast EtherCard-16, Compaq Netelligent 10/100 PC Card,
 1791 #       Toshiba 10/100 Ethernet PC Card, Xircom 16-bit Ethernet + Modem 56
 1792 # xl:   Support for the 3Com 3c900, 3c905, 3c905B and 3c905C (Fast)
 1793 #       Etherlink XL cards and integrated controllers.  This includes the
 1794 #       integrated 3c905B-TX chips in certain Dell Optiplex and Dell
 1795 #       Precision desktop machines and the integrated 3c905-TX chips
 1796 #       in Dell Latitude laptop docking stations.
 1797 #       Also supported: 3Com 3c980(C)-TX, 3Com 3cSOHO100-TX, 3Com 3c450-TX
 1798 
 1799 # Order for ISA/EISA devices is important here
 1800 
 1801 device          cm
 1802 hint.cm.0.at="isa"
 1803 hint.cm.0.port="0x2e0"
 1804 hint.cm.0.irq="9"
 1805 hint.cm.0.maddr="0xdc000"
 1806 device          cs
 1807 hint.cs.0.at="isa"
 1808 hint.cs.0.port="0x300"
 1809 device          ep
 1810 device          ex
 1811 device          fe
 1812 hint.fe.0.at="isa"
 1813 hint.fe.0.port="0x300"
 1814 device          fea
 1815 device          sn
 1816 hint.sn.0.at="isa"
 1817 hint.sn.0.port="0x300"
 1818 hint.sn.0.irq="10"
 1819 device          an
 1820 device          awi
 1821 device          cnw
 1822 device          wi
 1823 device          xe
 1824 
 1825 # PCI Ethernet NICs that use the common MII bus controller code.
 1826 device          dc              # DEC/Intel 21143 and various workalikes
 1827 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 1828 hint.fxp.0.prefer_iomap="0"
 1829 device          hme             # Sun HME (Happy Meal Ethernet)
 1830 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 1831 device          rl              # RealTek 8129/8139
 1832 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 1833 device          sf              # Adaptec AIC-6915 (``Starfire'')
 1834 device          sbsh            # Granch SBNI16 SHDSL modem
 1835 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 1836 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 1837 device          tl              # Texas Instruments ThunderLAN
 1838 device          tx              # SMC EtherPower II (83c170 ``EPIC'')
 1839 device          vr              # VIA Rhine, Rhine II
 1840 device          wb              # Winbond W89C840F
 1841 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 1842 
 1843 # PCI Ethernet NICs.
 1844 device          de              # DEC/Intel DC21x4x (``Tulip'')
 1845 device          txp             # 3Com 3cR990 (``Typhoon'')
 1846 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 1847 
 1848 # PCI Gigabit & FDDI NICs.
 1849 device          bge
 1850 device          lge
 1851 device          nge
 1852 device          sk
 1853 device          ti
 1854 device          fpa
 1855 
 1856 # Use "private" jumbo buffers allocated exclusively for the ti(4) driver.
 1857 # This option is incompatible with the TI_JUMBO_HDRSPLIT option below.
 1858 #options        TI_PRIVATE_JUMBOS
 1859 # Turn on the header splitting option for the ti(4) driver firmware.  This
 1860 # only works for Tigon II chips, and has no effect for Tigon I chips.
 1861 options         TI_JUMBO_HDRSPLIT
 1862 
 1863 # These two options allow manipulating the mbuf cluster size and mbuf size,
 1864 # respectively.  Be very careful with NIC driver modules when changing
 1865 # these from their default values, because that can potentially cause a
 1866 # mismatch between the mbuf size assumed by the kernel and the mbuf size
 1867 # assumed by a module.  The only driver that currently has the ability to
 1868 # detect a mismatch is ti(4).
 1869 options         MCLSHIFT=12     # mbuf cluster shift in bits, 12 == 4KB
 1870 options         MSIZE=512       # mbuf size in bytes
 1871 
 1872 #
 1873 # ATM related options (Cranor version)
 1874 # (note: this driver cannot be used with the HARP ATM stack)
 1875 #
 1876 # The `en' device provides support for Efficient Networks (ENI)
 1877 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 1878 #
 1879 # The `hatm' device provides support for Fore/Marconi HE155 and HE622
 1880 # ATM PCI cards.
 1881 #
 1882 # The `fatm' device provides support for Fore PCA200E ATM PCI cards.
 1883 #
 1884 # The `patm' device provides support for IDT77252 based cards like
 1885 # ProSum's ProATM-155 and ProATM-25 and IDT's evaluation boards.
 1886 #
 1887 # atm device provides generic atm functions and is required for
 1888 # atm devices.
 1889 # NATM enables the netnatm protocol family that can be used to
 1890 # bypass TCP/IP.
 1891 #
 1892 # utopia provides the access to the ATM PHY chips and is required for en,
 1893 # hatm and fatm.
 1894 #
 1895 # the current driver supports only PVC operations (no atm-arp, no multicast).
 1896 # for more details, please read the original documents at
 1897 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 1898 #
 1899 device          atm
 1900 device          en
 1901 device          fatm                    #Fore PCA200E
 1902 device          hatm                    #Fore/Marconi HE155/622
 1903 device          patm                    #IDT77252 cards (ProATM and IDT)
 1904 device          utopia                  #ATM PHY driver
 1905 options         NATM                    #native ATM
 1906 
 1907 options         LIBMBPOOL               #needed by patm, iatm
 1908 
 1909 #
 1910 # Sound drivers
 1911 #
 1912 # sound: The generic sound driver.
 1913 #
 1914 
 1915 device          sound
 1916 
 1917 #
 1918 # snd_*: Device-specific drivers.
 1919 #
 1920 # The flags of the device tells the device a bit more info about the
 1921 # device that normally is obtained through the PnP interface.
 1922 #       bit  2..0   secondary DMA channel;
 1923 #       bit  4      set if the board uses two dma channels;
 1924 #       bit 15..8   board type, overrides autodetection; leave it
 1925 #                   zero if don't know what to put in (and you don't,
 1926 #                   since this is unsupported at the moment...).
 1927 #
 1928 # snd_als4000:          Avance Logic ALS4000 PCI.
 1929 # snd_ad1816:           Analog Devices AD1816 ISA PnP/non-PnP.
 1930 # snd_audiocs:          Crystal Semiconductor CS4231 SBus/EBus.
 1931 # snd_cmi:              CMedia CMI8338/CMI8738 PCI.
 1932 # snd_cs4281:           Crystal Semiconductor CS4281 PCI.
 1933 # snd_csa:              Crystal Semiconductor CS461x/428x PCI. (except
 1934 #                       4281)
 1935 # snd_ds1:              Yamaha DS-1 PCI.
 1936 # snd_emu10k1:          Creative EMU10K1 PCI and EMU10K2 (Audigy) PCI.
 1937 # snd_es137x:           Ensoniq AudioPCI ES137x PCI.
 1938 # snd_ess:              Ensoniq ESS ISA PnP/non-PnP, to be used in
 1939 #                       conjunction with snd_sbc.
 1940 # snd_fm801:            Forte Media FM801 PCI.
 1941 # snd_gusc:             Gravis UltraSound ISA PnP/non-PnP.
 1942 # snd_ich:              Intel ICH PCI and some more audio controllers
 1943 #                       embedded in a chipset.
 1944 # snd_maestro:          ESS Technology Maestro-1/2x PCI.
 1945 # snd_maestro3:         ESS Technology Maestro-3/Allegro PCI.
 1946 # snd_mss:              Microsoft Sound System ISA PnP/non-PnP.
 1947 # snd_neomagic:         Neomagic 256 AV/ZX PCI.
 1948 # snd_sb16:             Creative SoundBlaster16, to be used in
 1949 #                       conjuction with snd_sbc.
 1950 # snd_sb8:              Creative SoundBlaster (pre-16), to be used in
 1951 #                       conjuction with snd_sbc.
 1952 # snd_sbc:              Creative SoundBlaster ISA PnP/non-PnP.
 1953 #                       Supports ESS and Avance ISA chips as well.
 1954 # snd_solo:             ESS Solo-1x PCI.
 1955 # snd_t4dwave:          Trident 4DWave PCI, Sis 7018 PCI and Acer Labs
 1956 #                       M5451 PCI.
 1957 # snd_via8233:          VIA VT8233x PCI.
 1958 # snd_via82c686:        VIA VT82C686A PCI.
 1959 # snd_vibes:            S3 Sonicvibes PCI.
 1960 # snd_uaudio:           USB audio.
 1961 
 1962 device          snd_ad1816
 1963 device          snd_als4000
 1964 #device         snd_au88x0
 1965 #device         snd_audiocs
 1966 device          snd_cmi
 1967 device          snd_cs4281
 1968 device          snd_csa
 1969 device          snd_ds1
 1970 device          snd_emu10k1
 1971 device          snd_es137x
 1972 device          snd_ess
 1973 device          snd_fm801
 1974 device          snd_gusc
 1975 device          snd_ich
 1976 device          snd_maestro
 1977 device          snd_maestro3
 1978 device          snd_mss
 1979 device          snd_neomagic
 1980 device          snd_sb16
 1981 device          snd_sb8
 1982 device          snd_sbc
 1983 device          snd_solo
 1984 device          snd_t4dwave
 1985 device          snd_via8233
 1986 device          snd_via82c686
 1987 device          snd_vibes
 1988 #device         snd_vortex1
 1989 device          snd_uaudio
 1990 
 1991 # For non-pnp sound cards:
 1992 hint.pcm.0.at="isa"
 1993 hint.pcm.0.irq="10"
 1994 hint.pcm.0.drq="1"
 1995 hint.pcm.0.flags="0x0"
 1996 hint.sbc.0.at="isa"
 1997 hint.sbc.0.port="0x220"
 1998 hint.sbc.0.irq="5"
 1999 hint.sbc.0.drq="1"
 2000 hint.sbc.0.flags="0x15"
 2001 hint.gusc.0.at="isa"
 2002 hint.gusc.0.port="0x220"
 2003 hint.gusc.0.irq="5"
 2004 hint.gusc.0.drq="1"
 2005 hint.gusc.0.flags="0x13"
 2006 
 2007 #
 2008 # IEEE-488 hardware:
 2009 #       pcii:   PCIIA cards (uPD7210 based isa cards)
 2010 device  pcii
 2011 hint.pcii.0.at="isa"
 2012 hint.pcii.0.port="0x2e1"
 2013 hint.pcii.0.irq="5"
 2014 hint.pcii.0.drq="1"
 2015 
 2016 #
 2017 # Miscellaneous hardware:
 2018 #
 2019 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 2020 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 2021 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 2022 # cy: Cyclades serial driver
 2023 # joy: joystick (including IO DATA PCJOY PC Card joystick)
 2024 # rc: RISCom/8 multiport card
 2025 # rp: Comtrol Rocketport(ISA/PCI) - single card
 2026 # si: Specialix SI/XIO 4-32 port terminal multiplexor
 2027 # nmdm: nullmodem terminal driver (see nmdm(4))
 2028 
 2029 # Notes on the Comtrol Rocketport driver:
 2030 #
 2031 # The exact values used for rp0 depend on how many boards you have
 2032 # in the system.  The manufacturer's sample configs are listed as:
 2033 #
 2034 #               device  rp      # core driver support
 2035 #
 2036 #   Comtrol Rocketport ISA single card
 2037 #               hint.rp.0.at="isa"
 2038 #               hint.rp.0.port="0x280"
 2039 #
 2040 #   If instead you have two ISA cards, one installed at 0x100 and the
 2041 #   second installed at 0x180, then you should add the following to
 2042 #   your kernel probe hints:
 2043 #               hint.rp.0.at="isa"
 2044 #               hint.rp.0.port="0x100"
 2045 #               hint.rp.1.at="isa"
 2046 #               hint.rp.1.port="0x180"
 2047 #
 2048 #   For 4 ISA cards, it might be something like this:
 2049 #               hint.rp.0.at="isa"
 2050 #               hint.rp.0.port="0x180"
 2051 #               hint.rp.1.at="isa"
 2052 #               hint.rp.1.port="0x100"
 2053 #               hint.rp.2.at="isa"
 2054 #               hint.rp.2.port="0x340"
 2055 #               hint.rp.3.at="isa"
 2056 #               hint.rp.3.port="0x240"
 2057 #
 2058 #   For PCI cards, you need no hints.
 2059 
 2060 # Mitsumi CD-ROM
 2061 device          mcd
 2062 hint.mcd.0.at="isa"
 2063 hint.mcd.0.port="0x300"
 2064 # for the Sony CDU31/33A CDROM
 2065 device          scd
 2066 hint.scd.0.at="isa"
 2067 hint.scd.0.port="0x230"
 2068 device          joy                     # PnP aware, hints for nonpnp only
 2069 hint.joy.0.at="isa"
 2070 hint.joy.0.port="0x201"
 2071 device          rc
 2072 hint.rc.0.at="isa"
 2073 hint.rc.0.port="0x220"
 2074 hint.rc.0.irq="12"
 2075 device          rp
 2076 hint.rp.0.at="isa"
 2077 hint.rp.0.port="0x280"
 2078 device          si
 2079 options         SI_DEBUG
 2080 hint.si.0.at="isa"
 2081 hint.si.0.maddr="0xd0000"
 2082 hint.si.0.irq="12"
 2083 device          nmdm
 2084 
 2085 #
 2086 # The 'bktr' device is a PCI video capture device using the Brooktree
 2087 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 2088 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 2089 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 2090 #
 2091 # options       OVERRIDE_CARD=xxx
 2092 # options       OVERRIDE_TUNER=xxx
 2093 # options       OVERRIDE_MSP=1
 2094 # options       OVERRIDE_DBX=1
 2095 # These options can be used to override the auto detection
 2096 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 2097 # Using sysctl(8) run-time overrides on a per-card basis can be made
 2098 #
 2099 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 2100 # or
 2101 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 2102 # Specifies the default video capture mode.
 2103 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
 2104 # to prevent hangs during initialisation, e.g. VideoLogic Captivator PCI.
 2105 #
 2106 # options       BKTR_USE_PLL
 2107 # This is required for PAL or SECAM boards with a 28Mhz crystal and no 35Mhz
 2108 # crystal, e.g. some new Bt878 cards.
 2109 #
 2110 # options       BKTR_GPIO_ACCESS
 2111 # This enable IOCTLs which give user level access to the GPIO port.
 2112 #
 2113 # options       BKTR_NO_MSP_RESET
 2114 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
 2115 #
 2116 # options       BKTR_430_FX_MODE
 2117 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 2118 #
 2119 # options       BKTR_SIS_VIA_MODE
 2120 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 2121 # needed for some old SiS and VIA chipset motherboards.
 2122 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 2123 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 2124 # As a rough guess, old = before 1998
 2125 #
 2126 # options       BKTR_NEW_MSP34XX_DRIVER
 2127 # Use new, more complete initialization scheme for the msp34* soundchip.
 2128 # Should fix stereo autodetection if the old driver does only output
 2129 # mono sound.
 2130 
 2131 #
 2132 # options       BKTR_USE_FREEBSD_SMBUS
 2133 # Compile with FreeBSD SMBus implementation
 2134 #
 2135 # Brooktree driver has been ported to the new I2C framework. Thus,
 2136 # you'll need to have the following 3 lines in the kernel config.
 2137 #     device smbus
 2138 #     device iicbus
 2139 #     device iicbb
 2140 #     device iicsmb
 2141 # The iic and smb devices are only needed if you want to control other
 2142 # I2C slaves connected to the external connector of some cards.
 2143 #
 2144 device          bktr
 2145 
 2146 #
 2147 # PC Card/PCMCIA and Cardbus
 2148 # (NEWCARD)
 2149 #
 2150 # pccbb: pci/cardbus bridge implementing YENTA interface
 2151 # pccard: pccard slots
 2152 # cardbus: cardbus slots
 2153 device          cbb
 2154 device          pccard
 2155 device          cardbus
 2156 
 2157 #
 2158 # SMB bus
 2159 #
 2160 # System Management Bus support is provided by the 'smbus' device.
 2161 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2162 # which is a child of the 'smbus' device.
 2163 #
 2164 # Supported devices:
 2165 # smb           standard io through /dev/smb*
 2166 #
 2167 # Supported SMB interfaces:
 2168 # iicsmb        I2C to SMB bridge with any iicbus interface
 2169 # bktr          brooktree848 I2C hardware interface
 2170 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2171 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2172 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2173 # viapm         VIA VT82C586B/596B/686A and VT8233 Power Management Unit
 2174 # amdpm         AMD 756 Power Management Unit
 2175 # nfpm          NVIDIA nForce Power Management Unit
 2176 #
 2177 device          smbus           # Bus support, required for smb below.
 2178 
 2179 device          intpm
 2180 device          alpm
 2181 device          ichsmb
 2182 device          viapm
 2183 device          amdpm
 2184 device          nfpm
 2185 
 2186 device          smb
 2187 
 2188 #
 2189 # I2C Bus
 2190 #
 2191 # Philips i2c bus support is provided by the `iicbus' device.
 2192 #
 2193 # Supported devices:
 2194 # ic    i2c network interface
 2195 # iic   i2c standard io
 2196 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2197 #
 2198 # Supported interfaces:
 2199 # bktr  brooktree848 I2C software interface
 2200 #
 2201 # Other:
 2202 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2203 #
 2204 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2205 device          iicbb
 2206 
 2207 device          ic
 2208 device          iic
 2209 device          iicsmb          # smb over i2c bridge
 2210 
 2211 # Parallel-Port Bus
 2212 #
 2213 # Parallel port bus support is provided by the `ppbus' device.
 2214 # Multiple devices may be attached to the parallel port, devices
 2215 # are automatically probed and attached when found.
 2216 #
 2217 # Supported devices:
 2218 # vpo   Iomega Zip Drive
 2219 #       Requires SCSI disk support ('scbus' and 'da'), best
 2220 #       performance is achieved with ports in EPP 1.9 mode.
 2221 # lpt   Parallel Printer
 2222 # plip  Parallel network interface
 2223 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2224 # pps   Pulse per second Timing Interface
 2225 # lpbb  Philips official parallel port I2C bit-banging interface
 2226 #
 2227 # Supported interfaces:
 2228 # ppc   ISA-bus parallel port interfaces.
 2229 #
 2230 
 2231 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2232                                   # (see flags in ppc(4))
 2233 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2234 options         PERIPH_1284     # Makes your computer act as an IEEE1284
 2235                                 # compliant peripheral
 2236 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2237 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2238 options         LPT_DEBUG       # Printer driver debug
 2239 options         PPC_DEBUG       # Parallel chipset level debug
 2240 options         PLIP_DEBUG      # Parallel network IP interface debug
 2241 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2242 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2243 
 2244 device          ppc
 2245 hint.ppc.0.at="isa"
 2246 hint.ppc.0.irq="7"
 2247 device          ppbus
 2248 device          vpo
 2249 device          lpt
 2250 device          plip
 2251 device          ppi
 2252 device          pps
 2253 device          lpbb
 2254 device          pcfclock
 2255 
 2256 # Kernel BOOTP support
 2257 
 2258 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2259                                 # Requires NFSCLIENT and NFS_ROOT
 2260 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2261 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2262 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2263 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2264 
 2265 #
 2266 # Add software watchdog routines.
 2267 #
 2268 options         SW_WATCHDOG
 2269 
 2270 #
 2271 # Disable swapping of stack pages.  This option removes all
 2272 # code which actually performs swapping, so it's not possible to turn
 2273 # it back on at run-time.
 2274 #
 2275 # This is sometimes usable for systems which don't have any swap space
 2276 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2277 # "vm.disable_swapspace_pageouts")
 2278 #
 2279 #options        NO_SWAPPING
 2280 
 2281 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2282 # for sendfile(2) that are used to map file VM pages, and normally
 2283 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2284 # typically want about 4 of these for each simultaneous file send.
 2285 #
 2286 options         NSFBUFS=1024
 2287 
 2288 #
 2289 # Enable extra debugging code for locks.  This stores the filename and
 2290 # line of whatever acquired the lock in the lock itself, and change a
 2291 # number of function calls to pass around the relevant data.  This is
 2292 # not at all useful unless you are debugging lock code.  Also note
 2293 # that it is likely to break e.g. fstat(1) unless you recompile your
 2294 # userland with -DDEBUG_LOCKS as well.
 2295 #
 2296 options         DEBUG_LOCKS
 2297 
 2298 
 2299 #####################################################################
 2300 # USB support
 2301 # UHCI controller
 2302 device          uhci
 2303 # OHCI controller
 2304 device          ohci
 2305 # EHCI controller
 2306 device          ehci
 2307 # General USB code (mandatory for USB)
 2308 device          usb
 2309 #
 2310 # USB Double Bulk Pipe devices
 2311 device          udbp
 2312 # USB Fm Radio
 2313 device          ufm
 2314 # Generic USB device driver
 2315 device          ugen
 2316 # Human Interface Device (anything with buttons and dials)
 2317 device          uhid
 2318 # USB keyboard
 2319 device          ukbd
 2320 # USB printer
 2321 device          ulpt
 2322 # USB Iomega Zip 100 Drive (Requires scbus and da)
 2323 device          umass
 2324 # USB support for Belkin F5U109 and Magic Control Technology serial adapters
 2325 device          umct
 2326 # USB modem support
 2327 device          umodem
 2328 # USB mouse
 2329 device          ums
 2330 # Diamond Rio 500 Mp3 player
 2331 device          urio
 2332 # USB scanners
 2333 device          uscanner
 2334 #
 2335 # USB serial support
 2336 device          ucom
 2337 # USB support for Belkin F5U103 and compatible serial adapters
 2338 device          ubsa
 2339 # USB support for BWCT console serial adapters
 2340 device          ubser
 2341 # USB support for serial adapters based on the FT8U100AX and FT8U232AM
 2342 device          uftdi
 2343 # USB support for Prolific PL-2303 serial adapters
 2344 device          uplcom
 2345 # USB Visor and Palm devices
 2346 device          uvisor
 2347 # USB serial support for DDI pocket's PHS
 2348 device          uvscom
 2349 #
 2350 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2351 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2352 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2353 # eval board.
 2354 device          aue
 2355 
 2356 # ASIX Electronics AX88172 USB 2.0 ethernet driver. Used in the
 2357 # LinkSys USB200M and various other adapters.
 2358 
 2359 device          axe
 2360 
 2361 #
 2362 # Devices which communicate using Ethernet over USB, particularly
 2363 # Communication Device Class (CDC) Ethernet specification. Supports
 2364 # Sharp Zaurus PDAs, some DOCSIS cable modems and so on.
 2365 device          cdce
 2366 #
 2367 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2368 # and Netmate II, and the Belkin F5U111.
 2369 device          cue
 2370 #
 2371 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2372 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2373 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2374 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2375 # and 2104USB, and the Corega USB-T.
 2376 device          kue
 2377 #
 2378 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2379 # and the GREEN HOUSE GH-USB100B.
 2380 device          rue
 2381 #
 2382 # Davicom DM9601E USB to fast ethernet. Supports the Corega FEther USB-TXC.
 2383 device          udav
 2384 
 2385 
 2386 # debugging options for the USB subsystem
 2387 #
 2388 options         USB_DEBUG
 2389 
 2390 # options for ukbd:
 2391 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2392 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2393 
 2394 # options for uplcom:
 2395 options         UPLCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2396                                                 # in milliseconds
 2397 
 2398 # options for uvscom:
 2399 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2400 options         UVSCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2401                                                 # in milliseconds
 2402 
 2403 #####################################################################
 2404 # FireWire support
 2405 
 2406 device          firewire        # FireWire bus code
 2407 device          sbp             # SCSI over Firewire (Requires scbus and da)
 2408 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2409 device          fwe             # Ethernet over FireWire (non-standard!)
 2410 device          fwip            # IP over FireWire (rfc2734 and rfc3146)
 2411 
 2412 #####################################################################
 2413 # dcons support (Dumb Console Device)
 2414 
 2415 device          dcons                   # dumb console driver
 2416 device          dcons_crom              # FireWire attachment
 2417 options         DCONS_BUF_SIZE=16384    # buffer size
 2418 options         DCONS_POLL_HZ=100       # polling rate
 2419 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2420 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2421 
 2422 #####################################################################
 2423 # crypto subsystem
 2424 #
 2425 # This is a port of the openbsd crypto framework.  Include this when
 2426 # configuring FAST_IPSEC and when you have a h/w crypto device to accelerate
 2427 # user applications that link to openssl.
 2428 #
 2429 # Drivers are ports from openbsd with some simple enhancements that have
 2430 # been fed back to openbsd.
 2431 
 2432 device          crypto          # core crypto support
 2433 device          cryptodev       # /dev/crypto for access to h/w
 2434 
 2435 device          rndtest         # FIPS 140-2 entropy tester
 2436 
 2437 device          hifn            # Hifn 7951, 7781, etc.
 2438 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2439 options         HIFN_RNDTEST    # enable rndtest support
 2440 
 2441 device          ubsec           # Broadcom 5501, 5601, 58xx
 2442 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2443 options         UBSEC_RNDTEST   # enable rndtest support
 2444 
 2445 #####################################################################
 2446 
 2447 
 2448 #
 2449 # Embedded system options:
 2450 #
 2451 # An embedded system might want to run something other than init.
 2452 options         INIT_PATH=/sbin/init:/stand/sysinstall
 2453 
 2454 # Debug options
 2455 options         BUS_DEBUG       # enable newbus debugging
 2456 options         DEBUG_VFS_LOCKS # enable vfs lock debugging
 2457 options         SOCKBUF_DEBUG   # enable sockbuf last record/mb tail checking
 2458 
 2459 #####################################################################
 2460 # SYSV IPC KERNEL PARAMETERS
 2461 #
 2462 # Maximum number of entries in a semaphore map.
 2463 options         SEMMAP=31
 2464 
 2465 # Maximum number of System V semaphores that can be used on the system at
 2466 # one time.
 2467 options         SEMMNI=11
 2468 
 2469 # Total number of semaphores system wide
 2470 options         SEMMNS=61
 2471 
 2472 # Total number of undo structures in system
 2473 options         SEMMNU=31
 2474 
 2475 # Maximum number of System V semaphores that can be used by a single process
 2476 # at one time.
 2477 options         SEMMSL=61
 2478 
 2479 # Maximum number of operations that can be outstanding on a single System V
 2480 # semaphore at one time.
 2481 options         SEMOPM=101
 2482 
 2483 # Maximum number of undo operations that can be outstanding on a single
 2484 # System V semaphore at one time.
 2485 options         SEMUME=11
 2486 
 2487 # Maximum number of shared memory pages system wide.
 2488 options         SHMALL=1025
 2489 
 2490 # Maximum size, in bytes, of a single System V shared memory region.
 2491 options         SHMMAX=(SHMMAXPGS*PAGE_SIZE+1)
 2492 options         SHMMAXPGS=1025
 2493 
 2494 # Minimum size, in bytes, of a single System V shared memory region.
 2495 options         SHMMIN=2
 2496 
 2497 # Maximum number of shared memory regions that can be used on the system
 2498 # at one time.
 2499 options         SHMMNI=33
 2500 
 2501 # Maximum number of System V shared memory regions that can be attached to
 2502 # a single process at one time.
 2503 options         SHMSEG=9
 2504 
 2505 # Set the amount of time (in seconds) the system will wait before
 2506 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2507 # the system will wait indefinitely until a key is pressed on the
 2508 # console.
 2509 options         PANIC_REBOOT_WAIT_TIME=16
 2510 
 2511 # Attempt to bypass the buffer cache and put data directly into the
 2512 # userland buffer for read operation when O_DIRECT flag is set on the
 2513 # file.  Both offset and length of the read operation must be
 2514 # multiples of the physical media sector size.
 2515 #
 2516 options         DIRECTIO
 2517 
 2518 # Specify a lower limit for the number of swap I/O buffers.  They are
 2519 # (among other things) used when bypassing the buffer cache due to
 2520 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2521 #
 2522 options         NSWBUF_MIN=120
 2523 
 2524 #####################################################################
 2525 
 2526 # More undocumented options for linting.
 2527 # Note that documenting these are not considered an affront.
 2528 
 2529 options         CAM_DEBUG_DELAY
 2530 
 2531 # VFS cluster debugging.
 2532 options         CLUSTERDEBUG
 2533 
 2534 options         DEBUG
 2535 
 2536 # Kernel filelock debugging.
 2537 options         LOCKF_DEBUG
 2538 
 2539 # System V compatible message queues
 2540 # Please note that the values provided here are used to test kernel
 2541 # building.  The defaults in the sources provide almost the same numbers.
 2542 # MSGSSZ must be a power of 2 between 8 and 1024.
 2543 options         MSGMNB=2049     # Max number of chars in queue
 2544 options         MSGMNI=41       # Max number of message queue identifiers
 2545 options         MSGSEG=2049     # Max number of message segments
 2546 options         MSGSSZ=16       # Size of a message segment
 2547 options         MSGTQL=41       # Max number of messages in system
 2548 
 2549 options         NBUF=512        # Number of buffer headers
 2550 
 2551 options         NMBCLUSTERS=1024        # Number of mbuf clusters
 2552 
 2553 options         SCSI_NCR_DEBUG
 2554 options         SCSI_NCR_MAX_SYNC=10000
 2555 options         SCSI_NCR_MAX_WIDE=1
 2556 options         SCSI_NCR_MYADDR=7
 2557 
 2558 options         SC_DEBUG_LEVEL=5        # Syscons debug level
 2559 options         SC_RENDER_DEBUG # syscons rendering debugging
 2560 
 2561 options         SHOW_BUSYBUFS   # List buffers that prevent root unmount
 2562 options         SLIP_IFF_OPTS
 2563 options         VFS_BIO_DEBUG   # VFS buffer I/O debugging
 2564 
 2565 options         KSTACK_MAX_PAGES=32 # Maximum pages to give the kernel stack
 2566 
 2567 # Adaptec Array Controller driver options
 2568 options         AAC_DEBUG       # Debugging levels:
 2569                                 # 0 - quiet, only emit warnings
 2570                                 # 1 - noisy, emit major function
 2571                                 #     points and things done
 2572                                 # 2 - extremely noisy, emit trace
 2573                                 #     items in loops, etc.
 2574 
 2575 # Yet more undocumented options for linting.
 2576 # BKTR_ALLOC_PAGES has no effect except to cause warnings, and
 2577 # BROOKTREE_ALLOC_PAGES hasn't actually been superseded by it, since the
 2578 # driver still mostly spells this option BROOKTREE_ALLOC_PAGES.
 2579 ##options       BKTR_ALLOC_PAGES=(217*4+1)
 2580 options         BROOKTREE_ALLOC_PAGES=(217*4+1)
 2581 options         MAXFILES=999
 2582 options         NDEVFSINO=1025
 2583 options         NDEVFSOVERFLOW=32769
 2584 
 2585 # Yet more undocumented options for linting.
 2586 options         VGA_DEBUG

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