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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FreeBSD/Linux Kernel Cross Reference
sys/i386/conf/LINT

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    1 #
    2 # LINT -- config file for checking all the sources, tries to pull in
    3 #       as much of the source tree as it can.
    4 #
    5 # $FreeBSD$
    6 #
    7 # NB: You probably don't want to try running a kernel built from this
    8 # file.  Instead, you should start from GENERIC, and add options from
    9 # this file as required.
   10 #
   11 
   12 #
   13 # This directive is mandatory; it defines the architecture to be
   14 # configured for; in this case, the 386 family based IBM-PC and
   15 # compatibles.
   16 #
   17 machine         i386
   18 
   19 #
   20 # This is the ``identification'' of the kernel.  Usually this should
   21 # be the same as the name of your kernel.
   22 #
   23 ident           LINT
   24 
   25 #
   26 # The `maxusers' parameter controls the static sizing of a number of
   27 # internal system tables by a formula defined in subr_param.c.  Setting
   28 # maxusers to 0 will cause the system to auto-size based on physical
   29 # memory.
   30 #
   31 maxusers        10
   32 
   33 #
   34 # The `makeoptions' parameter allows variables to be passed to the
   35 # generated Makefile in the build area.
   36 #
   37 # CONF_CFLAGS gives some extra compiler flags that are added to ${CFLAGS}
   38 # after most other flags.  Here we use it to inhibit use of non-optimal
   39 # gcc builtin functions (e.g., memcmp).
   40 #
   41 # DEBUG happens to be magic.
   42 # The following is equivalent to 'config -g KERNELNAME' and creates
   43 # 'kernel.debug' compiled with -g debugging as well as a normal
   44 # 'kernel'.  Use 'make install.debug' to install the debug kernel
   45 # but that isn't normally necessary as the debug symbols are not loaded
   46 # by the kernel and are not useful there anyway.
   47 #
   48 # KERNEL can be overridden so that you can change the default name of your
   49 # kernel.
   50 #
   51 # MODULES_OVERRIDE can be used to limit modules built to a specific list.
   52 #
   53 makeoptions     CONF_CFLAGS=-fno-builtin  #Don't allow use of memcmp, etc.
   54 #makeoptions    DEBUG=-g                #Build kernel with gdb(1) debug symbols
   55 #makeoptions    KERNEL=foo              #Build kernel "foo" and install "/foo"
   56 # Only build Linux API modules and plus those parts of the sound system I need.
   57 #makeoptions    MODULES_OVERRIDE="linux sound/snd sound/pcm sound/driver/maestro3"
   58 
   59 #
   60 # Certain applications can grow to be larger than the 128M limit
   61 # that FreeBSD initially imposes.  Below are some options to
   62 # allow that limit to grow to 256MB, and can be increased further
   63 # with changing the parameters.  MAXDSIZ is the maximum that the
   64 # limit can be set to, and the DFLDSIZ is the default value for
   65 # the limit.  MAXSSIZ is the maximum that the stack limit can be
   66 # set to.  You might want to set the default lower than the max, 
   67 # and explicitly set the maximum with a shell command for processes
   68 # that regularly exceed the limit like INND.
   69 #
   70 options         MAXDSIZ="(256*1024*1024)"
   71 options         MAXSSIZ="(256*1024*1024)"
   72 options         DFLDSIZ="(256*1024*1024)"
   73 
   74 #
   75 # BLKDEV_IOSIZE sets the default block size used in user block
   76 # device I/O.  Note that this value will be overridden by the label
   77 # when specifying a block device from a label with a non-0
   78 # partition blocksize.  The default is PAGE_SIZE.
   79 #
   80 options         BLKDEV_IOSIZE=8192
   81 
   82 # Options for the VM subsystem.
   83 options         PQ_CACHESIZE=512        # color for 512k/16k cache
   84 # Deprecated options supported for backwards compatibility.
   85 #options        PQ_NOOPT                # No coloring
   86 #options        PQ_LARGECACHE           # color for 512k/16k cache
   87 #options        PQ_HUGECACHE            # color for 1024k/16k cache
   88 #options        PQ_MEDIUMCACHE          # color for 256k/16k cache
   89 #options        PQ_NORMALCACHE          # color for 64k/16k cache
   90 
   91 # This allows you to actually store this configuration file into
   92 # the kernel binary itself, where it may be later read by saying:
   93 #    strings -n 3 /kernel | sed -n 's/^___//p' > MYKERNEL
   94 #
   95 options         INCLUDE_CONFIG_FILE     # Include this file in kernel
   96 
   97 #
   98 # The root device and filesystem type can be compiled in;
   99 # this provides a fallback option if the root device cannot
  100 # be correctly guessed by the bootstrap code, or an override if
  101 # the RB_DFLTROOT flag (-r) is specified when booting the kernel.
  102 #
  103 options         ROOTDEVNAME=\"ufs:da0s2e\"
  104 
  105 
  106 #####################################################################
  107 # SMP OPTIONS:
  108 #
  109 # SMP enables building of a Symmetric MultiProcessor Kernel.
  110 # APIC_IO enables the use of the IO APIC for Symmetric I/O.
  111 #
  112 # Notes:
  113 #
  114 #  An SMP kernel will ONLY run on an Intel MP spec. qualified motherboard.
  115 #
  116 #  Be sure to disable 'cpu I386_CPU' && 'cpu I486_CPU' for SMP kernels.
  117 #
  118 #  Check the 'Rogue SMP hardware' section to see if additional options
  119 #   are required by your hardware.
  120 #
  121 
  122 # Mandatory:
  123 options         SMP                     # Symmetric MultiProcessor Kernel
  124 options         APIC_IO                 # Symmetric (APIC) I/O
  125 
  126 #
  127 # Rogue SMP hardware:
  128 #
  129 
  130 # Bridged PCI cards:
  131 #
  132 # The MP tables of most of the current generation MP motherboards
  133 #  do NOT properly support bridged PCI cards.  To use one of these
  134 #  cards you should refer to ???
  135 
  136 
  137 #####################################################################
  138 # CPU OPTIONS
  139 
  140 #
  141 # You must specify at least one CPU (the one you intend to run on);
  142 # deleting the specification for CPUs you don't need to use may make
  143 # parts of the system run faster.  This is especially true removing
  144 # I386_CPU.
  145 #
  146 cpu             I386_CPU
  147 cpu             I486_CPU
  148 cpu             I586_CPU                # aka Pentium(tm)
  149 cpu             I686_CPU                # aka Pentium Pro(tm)
  150 
  151 #
  152 # Options for CPU features.
  153 #
  154 # CPU_ATHLON_SSE_HACK tries to enable SSE instructions when the BIOS has
  155 # forgotten to enable them.
  156 #
  157 # CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
  158 # BlueLightning CPU.  It works only with Cyrix FPU, and this option
  159 # should not be used with Intel FPU.
  160 #
  161 # CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
  162 # CPU if CPU supports it. The default is double-clock mode on
  163 # BlueLightning CPU box.
  164 #
  165 # CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
  166 #
  167 # CPU_DIRECT_MAPPED_CACHE sets L1 cache of Cyrix 486DLC CPU in direct
  168 # mapped mode.  Default is 2-way set associative mode.
  169 #
  170 # CPU_CYRIX_NO_LOCK enables weak locking for the entire address space
  171 # of Cyrix 6x86 and 6x86MX CPUs by setting the NO_LOCK bit of CCR1.
  172 # Otherwise, the NO_LOCK bit of CCR1 is cleared.  (NOTE 3)
  173 #
  174 # CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
  175 # reorder).  This option should not be used if you use memory mapped
  176 # I/O device(s).
  177 #
  178 # CPU_ENABLE_SSE enables SSE/MMX2 instructions support.
  179 #
  180 # CPU_ENABLE_TCC enables Thermal Control Circuitry (TCC) found in some
  181 # Pentium(tm) 4 and (possibly) later CPUs.  When enabled and detected,
  182 # TCC allows to restrict power consumption by using group of hw.p4tcc.*
  183 # sysctls.  This operates independently of SpeedStep and is useful on
  184 # systems where other mechanisms such as apm(4) or acpi(4) don't work.
  185 #
  186 # CPU_FASTER_5X86_FPU enables faster FPU exception handler.
  187 #
  188 # CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
  189 # for i386 machines.
  190 #
  191 # CPU_IORT defines I/O clock delay time (NOTE 1).  Default values of
  192 # I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
  193 # (no clock delay).
  194 #
  195 # CPU_L2_LATENCY specifed the L2 cache latency value.  This option is used
  196 # only when CPU_PPRO2CELERON is defined and Mendocino Celeron is detected.
  197 # The default value is 5.
  198 #
  199 # CPU_ELAN enables support for AMDs ElanSC520 CPU.
  200 #
  201 # CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
  202 # of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
  203 # 1).
  204 #
  205 # CPU_PPRO2CELERON enables L2 cache of Mendocino Celeron CPUs.  This option
  206 # is useful when you use Socket 8 to Socket 370 converter, because most Pentium
  207 # Pro BIOSs do not enable L2 cache of Mendocino Celeron CPUs.
  208 #
  209 # CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
  210 #
  211 # CPU_SUSP_HLT enables suspend on HALT.  If this option is set, CPU
  212 # enters suspend mode following execution of HALT instruction.
  213 #
  214 # CPU_WT_ALLOC enables write allocation on Cyrix 6x86/6x86MX and AMD
  215 # K5/K6/K6-2 cpus.
  216 #
  217 # CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
  218 # flush at hold state.
  219 #
  220 # CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
  221 # without cache flush at hold state, and (2) write-back CPU cache on
  222 # Cyrix 6x86 whose revision < 2.7 (NOTE 2).
  223 #
  224 # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
  225 # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
  226 # executed.  This option is only needed if I586_CPU is also defined,
  227 # and should be included for any non-Pentium CPU that defines it.
  228 #
  229 # NO_MEMORY_HOLE is an optimisation for systems with AMD K6 processors
  230 # which indicates that the 15-16MB range is *definitely* not being
  231 # occupied by an ISA memory hole.
  232 #
  233 # NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
  234 # CPU_LOOP_EN and CPU_RSTK_EN should not be used because of CPU bugs.
  235 # These options may crash your system.
  236 #
  237 # NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
  238 # in write-through mode when revision < 2.7.  If revision of Cyrix
  239 # 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
  240 #
  241 # NOTE 3: This option may cause failures for software that requires
  242 # locked cycles in order to operate correctly.
  243 #
  244 options         CPU_ATHLON_SSE_HACK
  245 options         CPU_BLUELIGHTNING_FPU_OP_CACHE
  246 options         CPU_BLUELIGHTNING_3X
  247 options         CPU_BTB_EN
  248 options         CPU_DIRECT_MAPPED_CACHE
  249 options         CPU_DISABLE_5X86_LSSER
  250 options         CPU_ELAN
  251 options         CPU_ENABLE_SSE
  252 options         CPU_FASTER_5X86_FPU
  253 options         CPU_I486_ON_386
  254 options         CPU_IORT
  255 options         CPU_L2_LATENCY=5
  256 options         CPU_LOOP_EN
  257 options         CPU_PPRO2CELERON
  258 options         CPU_RSTK_EN
  259 options         CPU_SUSP_HLT
  260 options         CPU_WT_ALLOC
  261 options         CYRIX_CACHE_WORKS
  262 options         CYRIX_CACHE_REALLY_WORKS
  263 #options        NO_F00F_HACK
  264 
  265 #
  266 # A math emulator is mandatory if you wish to run on hardware which
  267 # does not have a floating-point processor.  Pick either the original,
  268 # bogus (but freely-distributable) math emulator, or a much more
  269 # fully-featured but GPL-licensed emulator taken from Linux.
  270 #
  271 options         MATH_EMULATE            #Support for x87 emulation
  272 # Don't enable both of these in a real config.
  273 options         GPL_MATH_EMULATE        #Support for x87 emulation via
  274                                         #new math emulator
  275 
  276 
  277 #####################################################################
  278 # COMPATIBILITY OPTIONS                                             
  279 
  280 #
  281 # Implement system calls compatible with 4.3BSD and older versions of
  282 # FreeBSD.  You probably do NOT want to remove this as much current code
  283 # still relies on the 4.3 emulation.
  284 #
  285 options         COMPAT_43
  286 
  287 #
  288 # Allow applications running in user space to control the Local Descriptor
  289 # Table (LDT).  This is required by some ports.  Future versions of FreeBSD
  290 # may require this option for some programs in the base system.
  291 #
  292 options         USER_LDT                #allow user-level control of i386 ldt
  293 
  294 #
  295 # These three options provide support for System V Interface
  296 # Definition-style interprocess communication, in the form of shared
  297 # memory, semaphores, and message queues, respectively.
  298 #
  299 # System V shared memory and tunable parameters
  300 options         SYSVSHM         # include support for shared memory
  301 options         SHMMAXPGS=1025  # max amount of shared memory pages (4k on i386)
  302 options         SHMALL=1025     # max number of shared memory pages system wide
  303 options         SHMMAX="(SHMMAXPGS*PAGE_SIZE+1)"
  304                                 # max shared memory segment size (bytes)
  305 options         SHMMIN=2        # min shared memory segment size (bytes)
  306 options         SHMMNI=33       # max number of shared memory identifiers
  307 options         SHMSEG=9        # max shared memory segments per process
  308 
  309 # System V semaphores and tunable parameters
  310 options         SYSVSEM         # include support for semaphores
  311 options         SEMMAP=31       # amount of entries in semaphore map
  312 options         SEMMNI=11       # number of semaphore identifiers in the system
  313 options         SEMMNS=61       # number of semaphores in the system
  314 options         SEMMNU=31       # number of undo structures in the system
  315 options         SEMMSL=61       # max number of semaphores per id
  316 options         SEMOPM=101      # max number of operations per semop call
  317 options         SEMUME=11       # max number of undo entries per process
  318 
  319 # System V message queues and tunable parameters
  320 options         SYSVMSG         # include support for message queues
  321 options         MSGMNB=2049     # max characters per message queue
  322 options         MSGMNI=41       # max number of message queue identifiers
  323 options         MSGSEG=2049     # max number of message segments in the system
  324 options         MSGSSZ=16       # size of a message segment MUST be power of 2
  325 options         MSGTQL=41       # max amount of messages in the system
  326 
  327 
  328 #####################################################################
  329 # DEBUGGING OPTIONS
  330 
  331 #
  332 # Enable the kernel debugger.
  333 #
  334 options         DDB
  335 
  336 #
  337 # Don't drop into DDB for a panic. Intended for unattended operation
  338 # where you may want to drop to DDB from the console, but still want
  339 # the machine to recover from a panic
  340 #
  341 options         DDB_UNATTENDED
  342 
  343 #
  344 # If using GDB remote mode to debug the kernel, there's a non-standard
  345 # extension to the remote protocol that can be used to use the serial
  346 # port as both the debugging port and the system console.  It's non-
  347 # standard and you're on your own if you enable it.  See also the
  348 # "remotechat" variables in the FreeBSD specific version of gdb.
  349 #
  350 options         GDB_REMOTE_CHAT
  351 
  352 #
  353 # KTRACE enables the system-call tracing facility ktrace(2).
  354 #
  355 options         KTRACE                  #kernel tracing
  356 
  357 #
  358 # The INVARIANTS option is used in a number of source files to enable
  359 # extra sanity checking of internal structures.  This support is not
  360 # enabled by default because of the extra time it would take to check
  361 # for these conditions, which can only occur as a result of
  362 # programming errors.
  363 #
  364 options         INVARIANTS
  365 
  366 #
  367 # The INVARIANT_SUPPORT option makes us compile in support for
  368 # verifying some of the internal structures.  It is a prerequisite for
  369 # 'INVARIANTS', as enabling 'INVARIANTS' will make these functions be
  370 # called.  The intent is that you can set 'INVARIANTS' for single
  371 # source files (by changing the source file or specifying it on the
  372 # command line) if you have 'INVARIANT_SUPPORT' enabled.
  373 #
  374 options         INVARIANT_SUPPORT
  375 
  376 #
  377 # The DIAGNOSTIC option is used to enable extra debugging information
  378 # from some parts of the kernel.  As this makes everything more noisy,
  379 # it is disabled by default.
  380 #
  381 options         DIAGNOSTIC
  382 
  383 #
  384 # PERFMON causes the driver for Pentium/Pentium Pro performance counters
  385 # to be compiled.  See perfmon(4) for more information.
  386 #
  387 options         PERFMON
  388 
  389 
  390 #
  391 # This option let some drivers co-exist that can't co-exist in a running
  392 # system.  This is used to be able to compile all kernel code in one go for
  393 # quality assurance purposes (like this file, which the option takes it name
  394 # from.)
  395 #
  396 options         COMPILING_LINT
  397 
  398 
  399 # XXX - this doesn't belong here.
  400 # Allow ordinary users to take the console - this is useful for X.
  401 options         UCONSOLE
  402 
  403 # XXX - this doesn't belong here either
  404 options         USERCONFIG              #boot -c editor
  405 options         INTRO_USERCONFIG        #imply -c and show intro screen
  406 options         VISUAL_USERCONFIG       #visual boot -c editor
  407 
  408 
  409 #####################################################################
  410 # NETWORKING OPTIONS
  411 
  412 #
  413 # Protocol families:
  414 #  Only the INET (Internet) family is officially supported in FreeBSD.
  415 #  Source code for the NS (Xerox Network Service) is provided for amusement
  416 #  value.
  417 #
  418 options         INET                    #Internet communications protocols
  419 options         INET6                   #IPv6 communications protocols
  420 options         IPSEC                   #IP security
  421 options         IPSEC_ESP               #IP security (crypto; define w/ IPSEC)
  422 options         IPSEC_DEBUG             #debug for IP security
  423 #
  424 # Set IPSEC_FILTERGIF to force packets coming through a gif tunnel
  425 # to be processed by any configured packet filtering (ipfw, ipf).
  426 # The default is that packets coming from a tunnel are _not_ processed;
  427 # they are assumed trusted.
  428 #
  429 # Note that enabling this can be problematic as there are no mechanisms
  430 # in place for distinguishing packets coming out of a tunnel (e.g. no
  431 # encX devices as found on openbsd).
  432 #
  433 #options        IPSEC_FILTERGIF         #filter ipsec packets from a tunnel
  434 
  435 #
  436 # Experimental IPsec implementation that uses the kernel crypto
  437 # framework.  This cannot be configured together with IPSEC and
  438 # (currently) supports only IPv4.  To use this you must also
  439 # configure the crypto device (see below).  Note that with this
  440 # you get all the IPsec protocols (e.g. there is no FAST_IPSEC_ESP).
  441 # IPSEC_DEBUG is used, as above, to configure debugging support
  442 # within the IPsec protocols.
  443 #
  444 #options        FAST_IPSEC              #new IPsec
  445 
  446 options         IPX                     #IPX/SPX communications protocols
  447 options         IPXIP                   #IPX in IP encapsulation (not available)
  448 options         IPTUNNEL                #IP in IPX encapsulation (not available)
  449 
  450 options         NCP                     #NetWare Core protocol
  451 
  452 options         NETATALK                #Appletalk communications protocols
  453 
  454 # These are currently broken but are shipped due to interest.
  455 #options        NS                      #Xerox NS protocols
  456 #options        NSIP                    #XNS over IP
  457 
  458 #
  459 # SMB/CIFS requester
  460 # NETSMB enables support for SMB protocol, it requires LIBMCHAIN and LIBICONV
  461 # options.
  462 # NETSMBCRYPTO enables support for encrypted passwords.
  463 options         NETSMB                  #SMB/CIFS requester
  464 options         NETSMBCRYPTO            #encrypted password support for SMB
  465 
  466 # mchain library. It can be either loaded as KLD or compiled into kernel
  467 options         LIBMCHAIN               #mbuf management library
  468 
  469 # netgraph(4). Enable the base netgraph code with the NETGRAPH option.
  470 # Individual node types can be enabled with the corresponding option
  471 # listed below; however, this is not strictly necessary as netgraph
  472 # will automatically load the corresponding KLD module if the node type
  473 # is not already compiled into the kernel. Each type below has a
  474 # corresponding man page, e.g., ng_async(8).
  475 options         NETGRAPH                #netgraph(4) system
  476 options         NETGRAPH_ASYNC
  477 options         NETGRAPH_BPF
  478 options         NETGRAPH_CISCO
  479 options         NETGRAPH_ECHO
  480 options         NETGRAPH_ETHER
  481 options         NETGRAPH_FRAME_RELAY
  482 options         NETGRAPH_HOLE
  483 options         NETGRAPH_IFACE
  484 options         NETGRAPH_KSOCKET
  485 options         NETGRAPH_L2TP
  486 options         NETGRAPH_LMI
  487 # MPPC compression requires proprietary files (not included)
  488 #options        NETGRAPH_MPPC_COMPRESSION
  489 options         NETGRAPH_MPPC_ENCRYPTION
  490 options         NETGRAPH_ONE2MANY
  491 options         NETGRAPH_PPP
  492 options         NETGRAPH_PPPOE
  493 options         NETGRAPH_PPTPGRE
  494 options         NETGRAPH_RFC1490
  495 options         NETGRAPH_SOCKET
  496 options         NETGRAPH_TEE
  497 options         NETGRAPH_TTY
  498 options         NETGRAPH_UI
  499 options         NETGRAPH_VJC
  500 
  501 device          mn      # Munich32x/Falc54 Nx64kbit/sec cards.
  502 
  503 #
  504 # Network interfaces:
  505 #  The `loop' pseudo-device is MANDATORY when networking is enabled.
  506 #  The `ether' pseudo-device provides generic code to handle
  507 #  Ethernets; it is MANDATORY when a Ethernet device driver is
  508 #  configured or token-ring is enabled.
  509 #  The 'fddi' pseudo-device provides generic code to support FDDI.
  510 #  The `arcnet' pseudo-device provides generic code to support Arcnet.
  511 #  The `sppp' pseudo-device serves a similar role for certain types
  512 #  of synchronous PPP links (like `cx', `ar').
  513 #  The `sl' pseudo-device implements the Serial Line IP (SLIP) service.
  514 #  The `ppp' pseudo-device implements the Point-to-Point Protocol.
  515 #  The `bpf' pseudo-device enables the Berkeley Packet Filter.  Be
  516 #  aware of the legal and administrative consequences of enabling this
  517 #  option.  The number of devices determines the maximum number of
  518 #  simultaneous BPF clients programs runnable.
  519 #  The `disc' pseudo-device implements a minimal network interface,
  520 #  which throws away all packets sent and never receives any.  It is
  521 #  included for testing purposes.  This shows up as the 'ds' interface.
  522 #  The `tun' pseudo-device implements (user-)ppp and nos-tun
  523 #  The `gif' pseudo-device implements IPv6 over IP4 tunneling,
  524 #  IPv4 over IPv6 tunneling, IPv4 over IPv4 tunneling and
  525 #  IPv6 over IPv6 tunneling.
  526 #  The `gre' device implements two types of IP4 over IP4 tunneling:
  527 #  GRE and MOBILE, as specified in the RFC1701 and RFC2004.
  528 #  The `faith' pseudo-device captures packets sent to it and diverts them
  529 #  to the IPv4/IPv6 translation daemon.
  530 #  The `stf' device implements 6to4 encapsulation.
  531 #  The `ef' pseudo-device provides support for multiple ethernet frame types
  532 #  specified via ETHER_* options. See ef(4) for details.
  533 #
  534 # The PPP_BSDCOMP option enables support for compress(1) style entire
  535 # packet compression, the PPP_DEFLATE is for zlib/gzip style compression.
  536 # PPP_FILTER enables code for filtering the ppp data stream and selecting
  537 # events for resetting the demand dial activity timer - requires bpf.
  538 # See pppd(8) for more details.
  539 #
  540 pseudo-device   ether                   #Generic Ethernet
  541 pseudo-device   vlan    1               #VLAN support
  542 pseudo-device   token                   #Generic TokenRing
  543 pseudo-device   fddi                    #Generic FDDI
  544 pseudo-device   arcnet                  #Generic Arcnet
  545 pseudo-device   sppp                    #Generic Synchronous PPP
  546 pseudo-device   loop                    #Network loopback device
  547 pseudo-device   bpf                     #Berkeley packet filter
  548 pseudo-device   disc                    #Discard device (ds0, ds1, etc)
  549 pseudo-device   tun                     #Tunnel driver (ppp(8), nos-tun(8))
  550 pseudo-device   tap                     #Ethernet tunnel driver (tap(4))
  551 pseudo-device   sl      2               #Serial Line IP
  552 pseudo-device   gre                     #IP over IP tunneling
  553 pseudo-device   ppp     2               #Point-to-point protocol
  554 options         PPP_BSDCOMP             #PPP BSD-compress support
  555 options         PPP_DEFLATE             #PPP zlib/deflate/gzip support
  556 options         PPP_FILTER              #enable bpf filtering (needs bpf)
  557 
  558 pseudo-device   ef                      # Multiple ethernet frames support
  559 options         ETHER_II                # enable Ethernet_II frame
  560 options         ETHER_8023              # enable Ethernet_802.3 (Novell) frame
  561 options         ETHER_8022              # enable Ethernet_802.2 frame
  562 options         ETHER_SNAP              # enable Ethernet_802.2/SNAP frame
  563 
  564 # for IPv6
  565 pseudo-device   gif                     #IPv6 and IPv4 tunneling
  566 pseudo-device   faith   1               #for IPv6 and IPv4 translation
  567 pseudo-device   stf                     #6to4 IPv6 over IPv4 encapsulation
  568 
  569 #
  570 # Internet family options:
  571 #
  572 # MROUTING enables the kernel multicast packet forwarder, which works
  573 # with mrouted(8).
  574 #
  575 # PIM enables Protocol Independent Multicast in the kernel.
  576 # Requires MROUTING enabled.
  577 #
  578 # IPFIREWALL enables support for IP firewall construction, in
  579 # conjunction with the `ipfw' program.  IPFIREWALL_VERBOSE sends
  580 # logged packets to the system logger.  IPFIREWALL_VERBOSE_LIMIT
  581 # limits the number of times a matching entry can be logged.
  582 #
  583 # WARNING:  IPFIREWALL defaults to a policy of "deny ip from any to any"
  584 # and if you do not add other rules during startup to allow access,
  585 # YOU WILL LOCK YOURSELF OUT.  It is suggested that you set firewall_type=open
  586 # in /etc/rc.conf when first enabling this feature, then refining the
  587 # firewall rules in /etc/rc.firewall after you've tested that the new kernel
  588 # feature works properly.
  589 #
  590 # IPFIREWALL_DEFAULT_TO_ACCEPT causes the default rule (at boot) to
  591 # allow everything.  Use with care, if a cracker can crash your
  592 # firewall machine, they can get to your protected machines.  However,
  593 # if you are using it as an as-needed filter for specific problems as
  594 # they arise, then this may be for you.  Changing the default to 'allow'
  595 # means that you won't get stuck if the kernel and /sbin/ipfw binary get
  596 # out of sync.
  597 #
  598 # IPDIVERT enables the divert IP sockets, used by ``ipfw divert''
  599 #
  600 # IPSTEALTH enables code to support stealth forwarding (i.e., forwarding
  601 # packets without touching the ttl).  This can be useful to hide firewalls
  602 # from traceroute and similar tools.
  603 #
  604 # TCPDEBUG is undocumented.
  605 #
  606 options         MROUTING                # Multicast routing
  607 options         PIM                     # Protocol Independent Multicast
  608 options         IPFIREWALL              #firewall
  609 options         IPFIREWALL_VERBOSE      #enable logging to syslogd(8)
  610 options         IPFIREWALL_FORWARD      #enable transparent proxy support
  611 options         IPFIREWALL_VERBOSE_LIMIT=100    #limit verbosity
  612 options         IPFIREWALL_DEFAULT_TO_ACCEPT    #allow everything by default
  613 options         IPV6FIREWALL            #firewall for IPv6
  614 options         IPV6FIREWALL_VERBOSE
  615 options         IPV6FIREWALL_VERBOSE_LIMIT=100
  616 options         IPV6FIREWALL_DEFAULT_TO_ACCEPT
  617 options         IPDIVERT                #divert sockets
  618 options         IPFILTER                #ipfilter support
  619 options         IPFILTER_LOG            #ipfilter logging
  620 options         IPFILTER_DEFAULT_BLOCK  #block all packets by default
  621 options         IPSTEALTH               #support for stealth forwarding
  622 options         TCPDEBUG
  623 
  624 # The MBUF_STRESS_TEST option enables options which create
  625 # various random failures / extreme cases related to mbuf
  626 # functions.  See the mbuf(9) manpage for a list of available
  627 # test cases.
  628 options         MBUF_STRESS_TEST
  629 
  630 # RANDOM_IP_ID causes the ID field in IP packets to be randomized
  631 # instead of incremented by 1 with each packet generated.  This
  632 # option closes a minor information leak which allows remote
  633 # observers to determine the rate of packet generation on the
  634 # machine by watching the counter.
  635 options         RANDOM_IP_ID
  636 
  637 # Statically link in accept filters
  638 options                ACCEPT_FILTER_DATA
  639 options                ACCEPT_FILTER_HTTP
  640 
  641 #
  642 # TCP_DROP_SYNFIN adds support for ignoring TCP packets with SYN+FIN. This
  643 # prevents nmap et al. from identifying the TCP/IP stack, but breaks support
  644 # for RFC1644 extensions and is not recommended for web servers.
  645 #
  646 options         TCP_DROP_SYNFIN         #drop TCP packets with SYN+FIN
  647 
  648 # ICMP_BANDLIM enables icmp error response bandwidth limiting.   You
  649 # typically want this option as it will help protect the machine from
  650 # D.O.S. packet attacks.
  651 #
  652 options         ICMP_BANDLIM
  653 
  654 # DUMMYNET enables the "dummynet" bandwidth limiter. You need
  655 # IPFIREWALL as well. See the dummynet(4) and ipfw(8) manpages for more info.
  656 # When you run DUMMYNET it is advisable to also have "options HZ=1000"
  657 # to achieve a smoother scheduling of the traffic.
  658 #
  659 # BRIDGE enables bridging between ethernet cards -- see bridge(4).
  660 # You can use IPFIREWALL and DUMMYNET together with bridging.
  661 #
  662 options         DUMMYNET
  663 options         BRIDGE
  664 
  665 #
  666 # ATM (HARP version) options
  667 #
  668 # ATM_CORE includes the base ATM functionality code.  This must be included
  669 #       for ATM support.
  670 #
  671 # ATM_IP includes support for running IP over ATM.
  672 #
  673 # At least one (and usually only one) of the following signalling managers
  674 # must be included (note that all signalling managers include PVC support):
  675 # ATM_SIGPVC includes support for the PVC-only signalling manager `sigpvc'.
  676 # ATM_SPANS includes support for the `spans' signalling manager, which runs
  677 #       the FORE Systems's proprietary SPANS signalling protocol.
  678 # ATM_UNI includes support for the `uni30' and `uni31' signalling managers,
  679 #       which run the ATM Forum UNI 3.x signalling protocols.
  680 #
  681 # The `hea' driver provides support for the Efficient Networks, Inc.
  682 # ENI-155p ATM PCI Adapter.
  683 #
  684 # The `hfa' driver provides support for the FORE Systems, Inc.
  685 # PCA-200E ATM PCI Adapter.
  686 #
  687 # The `proatm' driver provides support for cards based on the IDT77252 chip
  688 # like ProSum's ProATM cards.
  689 #
  690 options         ATM_CORE                #core ATM protocol family
  691 options         ATM_IP                  #IP over ATM support
  692 options         ATM_SIGPVC              #SIGPVC signalling manager
  693 options         ATM_SPANS               #SPANS signalling manager
  694 options         ATM_UNI                 #UNI signalling manager
  695 device          hea                     #Efficient ENI-155p ATM PCI
  696 device          hfa                     #FORE PCA-200E ATM PCI
  697 device          proatm                  #ProSum's ProATM-155
  698 
  699 # DEVICE_POLLING adds support for mixed interrupt-polling handling
  700 # of network device drivers, which has significant benefits in terms
  701 # of robustness to overloads and responsivity, as well as permitting
  702 # accurate scheduling of the CPU time between kernel network processing
  703 # and other activities. The drawback is a moderate (up to 1/HZ seconds)
  704 # potential increase in response times.
  705 # It is strongly recommended to use HZ=1000 or 2000 with DEVICE_POLLING
  706 # to achieve smoother behaviour.
  707 # Additionally, you can enable/disable polling at runtime with the
  708 # sysctl variable kern.polling.enable (defaults off), and select
  709 # the CPU fraction reserved to userland with the sysctl variable
  710 # kern.polling.user_frac (default 50, range 0..100).
  711 #
  712 # Not all device drivers support this mode of operation at the time of
  713 # this writing.  See polling(4) for more details.
  714  
  715 options         DEVICE_POLLING
  716 
  717 
  718 #####################################################################
  719 # FILESYSTEM OPTIONS
  720 
  721 #
  722 # Only the root, /usr, and /tmp filesystems need be statically
  723 # compiled; everything else will be automatically loaded at mount
  724 # time.  (Exception: the UFS family---FFS, and MFS --- cannot
  725 # currently be demand-loaded.)  Some people still prefer to statically
  726 # compile other filesystems as well.
  727 #
  728 # NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
  729 # buggy, and WILL panic your system if you attempt to do anything with
  730 # them.  They are included here as an incentive for some enterprising
  731 # soul to sit down and fix them.
  732 #
  733 
  734 # One of these is mandatory:
  735 options         FFS                     #Fast filesystem
  736 options         MFS                     #Memory File System
  737 options         NFS                     #Network File System
  738 
  739 # The rest are optional:
  740 #options        NFS_NOSERVER            #Disable the NFS-server code.
  741 options         CD9660                  #ISO 9660 filesystem
  742 options         FDESC                   #File descriptor filesystem
  743 options         KERNFS                  #Kernel filesystem
  744 options         MSDOSFS                 #MS DOS File System
  745 options         NTFS                    #NT File System
  746 options         NULLFS                  #NULL filesystem
  747 options         NWFS                    #NetWare filesystem
  748 options         PORTAL                  #Portal filesystem
  749 options         PROCFS                  #Process filesystem
  750 options         SMBFS                   #SMB/CIFS filesystem
  751 options         UMAPFS                  #UID map filesystem
  752 options         UNION                   #Union filesystem
  753 # The xFS_ROOT options REQUIRE the associated ``options xFS''
  754 options         CD9660_ROOT             #CD-ROM usable as root device
  755 options         FFS_ROOT                #FFS usable as root device
  756 options         NFS_ROOT                #NFS usable as root device
  757 
  758 # Soft updates is technique for improving file system speed and
  759 # making abrupt shutdown less risky.
  760 options         SOFTUPDATES
  761 
  762 # Directory hashing improves the speed of operations on very large
  763 # directories at the expense of some memory.
  764 options         UFS_DIRHASH
  765 
  766 # Make space in the kernel for a root filesystem on a md device.
  767 # Define to the number of kilobytes to reserve for the filesystem.
  768 options         MD_ROOT_SIZE=10
  769 
  770 # Make the md device a potential root device, either with preloaded
  771 # images of type mfs_root or md_root.
  772 options         MD_ROOT
  773 
  774 # Specify double the default maximum size for malloc(9)-backed md devices.
  775 options         MD_NSECT=40000
  776 
  777 # Allow this many swap-devices.
  778 #
  779 # In order to manage swap, the system must reserve bitmap space that
  780 # scales with the largest mounted swap device multiplied by NSWAPDEV, 
  781 # irregardless of whether other swap devices exist or not.  So it
  782 # is not a good idea to make this value too large.
  783 options         NSWAPDEV=5
  784 
  785 # Disk quotas are supported when this option is enabled.
  786 options         QUOTA                   #enable disk quotas
  787 
  788 # If you are running a machine just as a fileserver for PC and MAC
  789 # users, using SAMBA or Netatalk, you may consider setting this option
  790 # and keeping all those users' directories on a filesystem that is
  791 # mounted with the suiddir option. This gives new files the same
  792 # ownership as the directory (similar to group). It's a security hole
  793 # if you let these users run programs, so confine it to file-servers
  794 # (but it'll save you lots of headaches in those cases). Root owned
  795 # directories are exempt and X bits are cleared. The suid bit must be
  796 # set on the directory as well; see chmod(1) PC owners can't see/set
  797 # ownerships so they keep getting their toes trodden on. This saves
  798 # you all the support calls as the filesystem it's used on will act as
  799 # they expect: "It's my dir so it must be my file".
  800 #
  801 options         SUIDDIR
  802 
  803 # NFS options:
  804 options         NFS_MINATTRTIMO=3       # VREG attrib cache timeout in sec
  805 options         NFS_MAXATTRTIMO=60
  806 options         NFS_MINDIRATTRTIMO=30   # VDIR attrib cache timeout in sec
  807 options         NFS_MAXDIRATTRTIMO=60
  808 options         NFS_GATHERDELAY=10      # Default write gather delay (msec)
  809 options         NFS_UIDHASHSIZ=29       # Tune the size of nfssvc_sock with this
  810 options         NFS_WDELAYHASHSIZ=16    # and with this
  811 options         NFS_MUIDHASHSIZ=63      # Tune the size of nfsmount with this
  812 options         NFS_DEBUG               # Enable NFS Debugging
  813 
  814 # Coda stuff:
  815 options         CODA                    #CODA filesystem.
  816 pseudo-device   vcoda   4               #coda minicache <-> venus comm.
  817 
  818 #
  819 # Add support for the EXT2FS filesystem of Linux fame.  Be a bit
  820 # careful with this - the ext2fs code has a tendency to lag behind
  821 # changes and not be exercised very much, so mounting read/write could
  822 # be dangerous (and even mounting read only could result in panics.)
  823 #
  824 options         EXT2FS
  825 
  826 # Use real implementations of the aio_* system calls.  There are numerous
  827 # stability and security issues in the current aio code that make it
  828 # unsuitable for inclusion on machines with untrusted local users.
  829 options         VFS_AIO
  830 
  831 
  832 #####################################################################
  833 # POSIX P1003.1B
  834 
  835 # Real time extensions added in the 1993 Posix
  836 # P1003_1B: Infrastructure
  837 # _KPOSIX_PRIORITY_SCHEDULING: Build in _POSIX_PRIORITY_SCHEDULING
  838 # _KPOSIX_VERSION:             Version kernel is built for
  839 
  840 options         P1003_1B
  841 options         _KPOSIX_PRIORITY_SCHEDULING
  842 options         _KPOSIX_VERSION=199309L
  843 
  844 
  845 #####################################################################
  846 # CLOCK OPTIONS
  847 
  848 # The granularity of operation is controlled by the kernel option HZ whose
  849 # default value (100) means a granularity of 10ms (1s/HZ).
  850 # Some subsystems, such as DUMMYNET or DEVICE_POLLING, might benefit from
  851 # a smaller granularity such as 1ms or less.
  852 # Consider, however, that reducing the granularity too much might
  853 # cause excessive overhead in clock interrupt processing,
  854 # potentially causing ticks to be missed and thus actually reducing
  855 # the accuracy of operation.
  856 
  857 options         HZ=100
  858 
  859 # The following options are used for debugging clock behavior only, and
  860 # should not be used for production systems.
  861 # 
  862 # CLK_CALIBRATION_LOOP will run the clock calibration loop at startup
  863 # until the user presses a key.
  864 
  865 options         CLK_CALIBRATION_LOOP
  866 
  867 # The following two options measure the frequency of the corresponding
  868 # clock relative to the RTC (onboard mc146818a).
  869 
  870 options         CLK_USE_I8254_CALIBRATION
  871 options         CLK_USE_TSC_CALIBRATION
  872 
  873 
  874 #####################################################################
  875 # SCSI DEVICES
  876 
  877 # SCSI DEVICE CONFIGURATION
  878 
  879 # The SCSI subsystem consists of the `base' SCSI code, a number of
  880 # high-level SCSI device `type' drivers, and the low-level host-adapter
  881 # device drivers.  The host adapters are listed in the ISA and PCI
  882 # device configuration sections below.
  883 #
  884 # Beginning with FreeBSD 2.0.5 you can wire down your SCSI devices so
  885 # that a given bus, target, and LUN always come on line as the same
  886 # device unit.  In earlier versions the unit numbers were assigned
  887 # in the order that the devices were probed on the SCSI bus.  This
  888 # means that if you removed a disk drive, you may have had to rewrite
  889 # your /etc/fstab file, and also that you had to be careful when adding
  890 # a new disk as it may have been probed earlier and moved your device
  891 # configuration around.
  892 
  893 # This old behavior is maintained as the default behavior.  The unit
  894 # assignment begins with the first non-wired down unit for a device
  895 # type.  For example, if you wire a disk as "da3" then the first
  896 # non-wired disk will be assigned da4.
  897 
  898 # Wiring devices down to a specific controller instance requires that you
  899 # declare the controller instance.  On other words, if you plan to wire a
  900 # device to ahc0, you need to declare the ahc0 device as well as the ahc
  901 # device as so:
  902 
  903 # device ahc
  904 # device ahc0
  905 
  906 # The syntax for wiring down devices is:
  907 
  908 # device        scbus0 at ahc0          # Single bus device
  909 # device        scbus1 at ahc1 bus 0    # Single bus device
  910 # device        scbus3 at ahc2 bus 0    # Twin bus device
  911 # device        scbus2 at ahc2 bus 1    # Twin bus device
  912 # device        da0 at scbus0 target 0 unit 0
  913 # device        da1 at scbus3 target 1
  914 # device        da2 at scbus2 target 3
  915 # device        sa1 at scbus1 target 6
  916 # device        cd
  917 
  918 # "units" (SCSI logical unit number) that are not specified are
  919 # treated as if specified as LUN 0.
  920 
  921 # All SCSI devices allocate as many units as are required.
  922 
  923 # The "unknown" device (uk? in pre-2.0.5) is now part of the base SCSI
  924 # configuration and doesn't have to be explicitly configured.
  925 
  926 device          scbus                   #base SCSI code
  927 device          ch                      #SCSI media changers
  928 device          da                      #SCSI direct access devices (aka disks)
  929 device          sa                      #SCSI tapes
  930 device          cd                      #SCSI CD-ROMs
  931 device          pass                    #CAM passthrough driver
  932 device          pt                      #SCSI processor type
  933 device          ses                     #SCSI SES/SAF-TE driver
  934 
  935 # CAM OPTIONS:
  936 # debugging options:
  937 # -- NOTE --  If you specify one of the bus/target/lun options, you must
  938 #             specify them all!
  939 # CAMDEBUG: When defined enables debugging macros
  940 # CAM_DEBUG_BUS:  Debug the given bus.  Use -1 to debug all busses.
  941 # CAM_DEBUG_TARGET:  Debug the given target.  Use -1 to debug all targets.
  942 # CAM_DEBUG_LUN:  Debug the given lun.  Use -1 to debug all luns.
  943 # CAM_DEBUG_FLAGS:  OR together CAM_DEBUG_INFO, CAM_DEBUG_TRACE,
  944 #                   CAM_DEBUG_SUBTRACE, and CAM_DEBUG_CDB
  945 #
  946 # CAM_MAX_HIGHPOWER: Maximum number of concurrent high power (start unit) cmds
  947 # SCSI_NO_SENSE_STRINGS: When defined disables sense descriptions
  948 # SCSI_NO_OP_STRINGS: When defined disables opcode descriptions
  949 # SCSI_DELAY: The number of MILLISECONDS to freeze the SIM (scsi adapter)
  950 #             queue after a bus reset, and the number of milliseconds to
  951 #             freeze the device queue after a bus device reset.
  952 options         CAMDEBUG
  953 options         CAM_DEBUG_BUS=-1
  954 options         CAM_DEBUG_TARGET=-1
  955 options         CAM_DEBUG_LUN=-1
  956 options         CAM_DEBUG_FLAGS="CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB"
  957 options         CAM_MAX_HIGHPOWER=4
  958 options         SCSI_NO_SENSE_STRINGS
  959 options         SCSI_NO_OP_STRINGS
  960 options         SCSI_DELAY=8000 # Be pessimistic about Joe SCSI device
  961 
  962 # Options for the CAM CDROM driver:
  963 # CHANGER_MIN_BUSY_SECONDS: Guaranteed minimum time quantum for a changer LUN
  964 # CHANGER_MAX_BUSY_SECONDS: Maximum time quantum per changer LUN, only
  965 #                           enforced if there is I/O waiting for another LUN
  966 # The compiled in defaults for these variables are 2 and 10 seconds,
  967 # respectively.
  968 #
  969 # These can also be changed on the fly with the following sysctl variables:
  970 # kern.cam.cd.changer.min_busy_seconds
  971 # kern.cam.cd.changer.max_busy_seconds
  972 #
  973 options         CHANGER_MIN_BUSY_SECONDS=2
  974 options         CHANGER_MAX_BUSY_SECONDS=10
  975 
  976 # Options for the CAM sequential access driver:
  977 # SA_IO_TIMEOUT: Timeout for read/write/wfm  operations, in minutes
  978 # SA_SPACE_TIMEOUT: Timeout for space operations, in minutes
  979 # SA_REWIND_TIMEOUT: Timeout for rewind operations, in minutes
  980 # SA_ERASE_TIMEOUT: Timeout for erase operations, in minutes
  981 # SA_1FM_AT_EOD: Default to model which only has a default one filemark at EOT.
  982 options         SA_IO_TIMEOUT="(4)"
  983 options         SA_SPACE_TIMEOUT="(60)"
  984 options         SA_REWIND_TIMEOUT="(2*60)"
  985 options         SA_ERASE_TIMEOUT="(4*60)"
  986 options         SA_1FM_AT_EOD
  987 
  988 # Optional timeout for the CAM processor target (pt) device
  989 # This is specified in seconds.  The default is 60 seconds.
  990 options         SCSI_PT_DEFAULT_TIMEOUT="60"
  991 
  992 # Optional enable of doing SES passthrough on other devices (e.g., disks)
  993 #
  994 # Normally disabled because a lot of newer SCSI disks report themselves
  995 # as having SES capabilities, but this can then clot up attempts to build
  996 # build a topology with the SES device that's on the box these drives
  997 # are in....
  998 options         SES_ENABLE_PASSTHROUGH
  999 
 1000 
 1001 #####################################################################
 1002 # MISCELLANEOUS DEVICES AND OPTIONS
 1003 
 1004 # The `pty' device usually turns out to be ``effectively mandatory'',
 1005 # as it is required for `telnetd', `rlogind', `screen', `emacs', and
 1006 # `xterm', among others.
 1007 
 1008 pseudo-device   pty             #Pseudo ttys
 1009 pseudo-device   speaker         #Play IBM BASIC-style noises out your speaker
 1010 pseudo-device   gzip            #Exec gzipped a.out's
 1011 pseudo-device   vn              #Vnode driver (turns a file into a device)
 1012 pseudo-device   md              #Memory/malloc disk
 1013 pseudo-device   snp             #Snoop device - to look at pty/vty/etc..
 1014 pseudo-device   ccd     4       #Concatenated disk driver
 1015 
 1016 # Configuring Vinum into the kernel is not necessary, since the kld
 1017 # module gets started automatically when vinum(8) starts.  This
 1018 # device is also untested.  Use at your own risk.
 1019 #
 1020 # The option VINUMDEBUG must match the value set in CFLAGS
 1021 # in src/sbin/vinum/Makefile.  Failure to do so will result in
 1022 # the following message from vinum(8):
 1023 #
 1024 # Can't get vinum config: Invalid argument
 1025 #
 1026 # see vinum(4) for more reasons not to use these options.
 1027 pseudo-device   vinum           #Vinum concat/mirror/raid driver
 1028 options         VINUMDEBUG      #enable Vinum debugging hooks
 1029 
 1030 # Kernel side iconv library
 1031 options         LIBICONV
 1032 
 1033 # Size of the kernel message buffer.  Should be N * pagesize.
 1034 options         MSGBUF_SIZE=40960
 1035 
 1036 
 1037 #####################################################################
 1038 # HARDWARE DEVICE CONFIGURATION
 1039 
 1040 # ISA and EISA devices:
 1041 # EISA support is available for some device, so they can be auto-probed.
 1042 # MicroChannel (MCA) support is available for some devices.
 1043 
 1044 #
 1045 # Mandatory ISA devices: isa, npx
 1046 #
 1047 device          isa
 1048 
 1049 #
 1050 # Options for `isa':
 1051 #
 1052 # AUTO_EOI_1 enables the `automatic EOI' feature for the master 8259A
 1053 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
 1054 # This option breaks suspend/resume on some portables.
 1055 #
 1056 # AUTO_EOI_2 enables the `automatic EOI' feature for the slave 8259A
 1057 # interrupt controller.  This saves about 0.7-1.25 usec for each interrupt.
 1058 # Automatic EOI is documented not to work for for the slave with the
 1059 # original i8259A, but it works for some clones and some integrated
 1060 # versions.
 1061 #
 1062 # MAXMEM specifies the amount of RAM on the machine; if this is not
 1063 # specified, FreeBSD will first read the amount of memory from the CMOS
 1064 # RAM, so the amount of memory will initially be limited to 64MB or 16MB
 1065 # depending on the BIOS.  If the BIOS reports 64MB, a memory probe will
 1066 # then attempt to detect the installed amount of RAM.  If this probe
 1067 # fails to detect >64MB RAM you will have to use the MAXMEM option.
 1068 # The amount is in kilobytes, so for a machine with 128MB of RAM, it would
 1069 # be 131072 (128 * 1024).
 1070 #
 1071 # BROKEN_KEYBOARD_RESET disables the use of the keyboard controller to
 1072 # reset the CPU for reboot.  This is needed on some systems with broken
 1073 # keyboard controllers.
 1074 #
 1075 # PAS_JOYSTICK_ENABLE enables the gameport on the ProAudio Spectrum
 1076 
 1077 options         AUTO_EOI_1
 1078 #options        AUTO_EOI_2
 1079 options         MAXMEM="(128*1024)"
 1080 #options        BROKEN_KEYBOARD_RESET
 1081 #options        PAS_JOYSTICK_ENABLE
 1082 
 1083 # Enable support for the kernel PLL to use an external PPS signal,
 1084 # under supervision of [x]ntpd(8)
 1085 # More info in ntpd documentation: http://www.eecis.udel.edu/~ntp
 1086 
 1087 options         PPS_SYNC
 1088 
 1089 # If you see the "calcru: negative time of %ld usec for pid %d (%s)\n"
 1090 # message you probably have some broken sw/hw which disables interrupts
 1091 # for too long.  You can make the system more resistant to this by
 1092 # choosing a high value for NTIMECOUNTER.  The default is 5, there
 1093 # is no upper limit but more than a couple of hundred are not productive.
 1094 # A better strategy may be to sysctl -w kern.timecounter.method=1
 1095 
 1096 options         NTIMECOUNTER=20
 1097 
 1098 # The keyboard controller; it controls the keyboard and the PS/2 mouse.
 1099 device          atkbdc0 at isa? port IO_KBD
 1100 
 1101 # The AT keyboard
 1102 device          atkbd0  at atkbdc? irq 1
 1103 
 1104 # Options for atkbd:
 1105 options         ATKBD_DFLT_KEYMAP       # specify the built-in keymap
 1106 makeoptions     ATKBD_DFLT_KEYMAP="jp.106"
 1107 
 1108 # These options are valid for other keyboard drivers as well.
 1109 options         KBD_DISABLE_KEYMAP_LOAD # refuse to load a keymap
 1110 options         KBD_INSTALL_CDEV        # install a CDEV entry in /dev
 1111 
 1112 # `flags' for atkbd:
 1113 #       0x01    Force detection of keyboard, else we always assume a keyboard
 1114 #       0x02    Don't reset keyboard, useful for some newer ThinkPads
 1115 #       0x03    Force detection and avoid reset, might help with certain
 1116 #               dockingstations
 1117 #       0x04    Old-style (XT) keyboard support, useful for older ThinkPads
 1118 
 1119 # PS/2 mouse
 1120 device          psm0    at atkbdc? irq 12
 1121 
 1122 # Options for psm:
 1123 options         PSM_HOOKRESUME          #hook the system resume event, useful
 1124                                         #for some laptops
 1125 options         PSM_RESETAFTERSUSPEND   #reset the device at the resume event
 1126 
 1127 # The video card driver.
 1128 device          vga0    at isa?
 1129 
 1130 # Options for vga:
 1131 # Try the following option if the mouse pointer is not drawn correctly
 1132 # or font does not seem to be loaded properly.  May cause flicker on
 1133 # some systems.
 1134 options         VGA_ALT_SEQACCESS
 1135 
 1136 # If you can dispense with some vga driver features, you may want to
 1137 # use the following options to save some memory.
 1138 options         VGA_NO_FONT_LOADING     # don't save/load font
 1139 options         VGA_NO_MODE_CHANGE      # don't change video modes
 1140 
 1141 # Older video cards may require this option for proper operation.
 1142 options         VGA_SLOW_IOACCESS       # do byte-wide i/o's to TS and GDC regs
 1143 
 1144 # The following option probably won't work with the LCD displays.
 1145 options         VGA_WIDTH90             # support 90 column modes
 1146 
 1147 # To include support for VESA video modes
 1148 options         VESA
 1149 
 1150 # Splash screen at start up!  Screen savers require this too.
 1151 pseudo-device   splash
 1152 
 1153 # The pcvt console driver (vt220 compatible).
 1154 device          vt0     at isa?
 1155 options         XSERVER                 # support for running an X server on vt
 1156 options         FAT_CURSOR              # start with block cursor
 1157 # This PCVT option is for keyboards such as those used on IBM ThinkPad laptops
 1158 options         PCVT_SCANSET=2          # IBM keyboards are non-std
 1159 # Other PCVT options are documented in pcvt(4).
 1160 options         PCVT_24LINESDEF
 1161 options         PCVT_CTRL_ALT_DEL
 1162 options         PCVT_EMU_MOUSE
 1163 options         PCVT_FREEBSD=211
 1164 options         PCVT_META_ESC
 1165 options         PCVT_NSCREENS=9
 1166 options         PCVT_PRETTYSCRNS
 1167 options         PCVT_SCREENSAVER
 1168 options         PCVT_USEKBDSEC
 1169 options         PCVT_VT220KEYB
 1170 
 1171 # The syscons console driver (sco color console compatible).
 1172 device          sc0     at isa?
 1173 options         MAXCONS=16              # number of virtual consoles
 1174 options         SC_ALT_MOUSE_IMAGE      # simplified mouse cursor in text mode
 1175 options         SC_DFLT_FONT            # compile font in
 1176 makeoptions     SC_DFLT_FONT=cp850
 1177 options         SC_DISABLE_DDBKEY       # disable `debug' key
 1178 options         SC_DISABLE_REBOOT       # disable reboot key sequence
 1179 options         SC_HISTORY_SIZE=200     # number of history buffer lines
 1180 options         SC_MOUSE_CHAR=0x3       # char code for text mode mouse cursor
 1181 options         SC_PIXEL_MODE           # add support for the raster text mode
 1182 
 1183 # The following options will let you change the default colors of syscons.
 1184 options         SC_NORM_ATTR="(FG_GREEN|BG_BLACK)"
 1185 options         SC_NORM_REV_ATTR="(FG_YELLOW|BG_GREEN)"
 1186 options         SC_KERNEL_CONS_ATTR="(FG_RED|BG_BLACK)"
 1187 options         SC_KERNEL_CONS_REV_ATTR="(FG_BLACK|BG_RED)"
 1188 
 1189 # If you have a two button mouse, you may want to add the following option
 1190 # to use the right button of the mouse to paste text.
 1191 options         SC_TWOBUTTON_MOUSE
 1192 
 1193 # You can selectively disable features in syscons.
 1194 options         SC_NO_CUTPASTE
 1195 options         SC_NO_FONT_LOADING
 1196 options         SC_NO_HISTORY
 1197 options         SC_NO_SYSMOUSE
 1198 
 1199 #
 1200 # The Numeric Processing eXtension driver.  In addition to this, you
 1201 # may configure a math emulator (see above).  If your machine has a
 1202 # hardware FPU and the kernel configuration includes the npx device
 1203 # *and* a math emulator compiled into the kernel, the hardware FPU
 1204 # will be used, unless it is found to be broken or unless "flags" to
 1205 # npx0 includes "0x08", which requests preference for the emulator.
 1206 device          npx0    at nexus? port IO_NPX flags 0x0 irq 13
 1207 
 1208 #
 1209 # `flags' for npx0:
 1210 #       0x01    don't use the npx registers to optimize bcopy.
 1211 #       0x02    don't use the npx registers to optimize bzero.
 1212 #       0x04    don't use the npx registers to optimize copyin or copyout.
 1213 #       0x08    use emulator even if hardware FPU is available.
 1214 # The npx registers are normally used to optimize copying and zeroing when
 1215 # all of the following conditions are satisfied:
 1216 #       I586_CPU is an option
 1217 #       the cpu is an i586 (perhaps not a Pentium)
 1218 #       the probe for npx0 succeeds
 1219 #       INT 16 exception handling works.
 1220 # Then copying and zeroing using the npx registers is normally 30-100% faster.
 1221 # The flags can be used to control cases where it doesn't work or is slower.
 1222 # Setting them at boot time using userconfig works right (the optimizations
 1223 # are not used until later in the bootstrap when npx0 is attached).
 1224 # Flag 0x08 automatically disables the i586 optimized routines.
 1225 #
 1226 
 1227 #
 1228 # Optional ISA and EISA devices:
 1229 #
 1230 
 1231 #
 1232 # SCSI host adapters: `aha', `aic', `bt'
 1233 #
 1234 # adv: All Narrow SCSI bus AdvanSys controllers.
 1235 # adw: Second Generation AdvanSys controllers including the ADV940UW.
 1236 # aha: Adaptec 154x
 1237 # ahc: Adaptec 274x/284x/294x
 1238 # aic: Adaptec 152x
 1239 # bt: Most Buslogic controllers
 1240 # ncv: NCR 53C500 based SCSI host adapters.
 1241 # nsp: Workbit Ninja SCSI-3 based PC Card SCSI host adapters.
 1242 # stg: TMC 18C30, 18C50 based ISA/PC Card SCSI host adapters.
 1243 #
 1244 # Note that the order is important in order for Buslogic cards to be
 1245 # probed correctly.
 1246 #
 1247 
 1248 device          bt0     at isa? port IO_BT0
 1249 device          adv0    at isa?
 1250 device          adw
 1251 device          aha0    at isa?
 1252 device          aic0    at isa?
 1253 device          ncv
 1254 device          nsp
 1255 device          stg0    at isa? port 0x140 irq 11
 1256 
 1257 #
 1258 # Adaptec FSA RAID controllers, including integrated DELL controller,
 1259 # the Dell PERC 2/QC and the HP NetRAID-4M
 1260 #
 1261 device          aac
 1262 device          aacp    # SCSI Passthrough interface (optional, CAM required)
 1263 
 1264 #
 1265 # IBM (now Adaptec) ServeRAID controllers
 1266 device          ips
 1267 
 1268 #
 1269 # Compaq Smart RAID, Mylex DAC960 and AMI MegaRAID controllers.  Only
 1270 # one entry is needed; the code will find and configure all supported
 1271 # controllers.
 1272 #
 1273 device          ida             # Compaq Smart RAID
 1274 device          mlx             # Mylex DAC960
 1275 device          pst             # Promise Supertrak SX6000
 1276 device          amr             # AMI MegaRAID
 1277 
 1278 #
 1279 # Areca 11xx and 12xx series of SATA II RAID controllers.
 1280 # CAM is required.
 1281 #
 1282 device          arcmsr          # Areca SATA II RAID
 1283 
 1284 #
 1285 # 3ware ATA RAID
 1286 #
 1287 device          twe             # 3ware ATA RAID
 1288 
 1289 #
 1290 # 3ware 9000 series PATA/SATA RAID controller driver and options.
 1291 # The driver is implemented as a SIM, and so, needs the CAM infrastructure.
 1292 #
 1293 options         TWA_DEBUG               # 0-10; 10 prints the most messages.
 1294 options         TWA_FLASH_FIRMWARE      # firmware image bundled when defined.
 1295 device          twa                     # 3ware 9000 series PATA/SATA RAID
 1296 
 1297 #
 1298 # The 'ATA' driver supports all ATA and ATAPI devices.
 1299 # It can reuse the majors of wd.c for booting purposes.
 1300 # You only need one "device ata" for it to find all
 1301 # PCI ATA/ATAPI devices on modern machines.
 1302 device          ata
 1303 device          atadisk         # ATA disk drives
 1304 device          atapicd         # ATAPI CDROM drives
 1305 device          atapifd         # ATAPI floppy drives
 1306 device          atapist         # ATAPI tape drives
 1307 device          atapicam        # emulate ATAPI devices as SCSI ditto via CAM
 1308                                 # needs CAM to be present (scbus & pass)
 1309 
 1310 #The following options are valid on the ATA driver:
 1311 #
 1312 # ATA_STATIC_ID:        controller numbering is static (like the old driver)
 1313 #                       else the device numbers are dynamically allocated.
 1314 options         ATA_STATIC_ID
 1315 
 1316 #
 1317 # For older non-PCI systems, these are the lines to use:
 1318 #device         ata0    at isa? port IO_WD1 irq 14
 1319 #device         ata1    at isa? port IO_WD2 irq 15
 1320 
 1321 #
 1322 # ST-506, ESDI, and IDE hard disks: `wdc' and `wd'
 1323 #
 1324 # The flags fields are used to enable the multi-sector I/O and
 1325 # the 32BIT I/O modes.  The flags may be used in either the controller
 1326 # definition or in the individual disk definitions.  The controller
 1327 # definition is supported for the boot configuration stuff.
 1328 #
 1329 # Each drive has a 16 bit flags value defined:
 1330 #       The low 8 bits are the maximum value for the multi-sector I/O,
 1331 #       where 0xff defaults to the maximum that the drive can handle.
 1332 #       The high bit of the 16 bit flags (0x8000) allows probing for
 1333 #       32 bit transfers.  Bit 14 (0x4000) enables a hack to wake
 1334 #       up powered-down laptop drives.  Bit 13 (0x2000) allows
 1335 #       probing for PCI IDE DMA controllers, such as Intel's PIIX
 1336 #       south bridges. Bit 12 (0x1000) sets LBA mode instead of the
 1337 #       default CHS mode for accessing the drive. See the wd.4 man page.
 1338 #
 1339 # The flags field for the drives can be specified in the controller
 1340 # specification with the low 16 bits for drive 0, and the high 16 bits
 1341 # for drive 1.
 1342 # e.g.:
 1343 #device         wdc0    at isa? port IO_WD1 irq 14 flags 0x00ff8004
 1344 #
 1345 # specifies that drive 0 will be allowed to probe for 32 bit transfers and
 1346 # a maximum multi-sector transfer of 4 sectors, and drive 1 will not be
 1347 # allowed to probe for 32 bit transfers, but will allow multi-sector
 1348 # transfers up to the maximum that the drive supports.
 1349 #
 1350 # If you are using a PCI controller that is not running in compatibility
 1351 # mode (for example, it is a 2nd IDE PCI interface), then use config line(s)
 1352 # such as:
 1353 #
 1354 #device         wdc2    at isa? port 0 flags 0xa0ffa0ff
 1355 #device         wd4     at wdc2 drive 0
 1356 #device         wd5     at wdc2 drive 1
 1357 #
 1358 #device         wdc3    at isa? port 0 flags 0xa0ffa0ff
 1359 #device         wd6     at wdc3 drive 0
 1360 #device         wd7     at wdc3 drive 1
 1361 #
 1362 # Note that the above config would be useful for a Promise card, when used
 1363 # on a MB that already has a PIIX controller.  Note the bogus irq and port
 1364 # entries.  These are automatically filled in by the IDE/PCI support.
 1365 #
 1366 # This driver must be commented out because it is mutually exclusive with
 1367 # the ata(4) driver.
 1368 #
 1369 device          wdc0    at isa? port IO_WD1 irq 14
 1370 device          wd0     at wdc0 drive 0
 1371 device          wd1     at wdc0 drive 1
 1372 device          wdc1    at isa? port IO_WD2 irq 15
 1373 device          wd2     at wdc1 drive 0
 1374 device          wd3     at wdc1 drive 1
 1375 
 1376 #
 1377 # This option allow you to override the default probe time for IDE
 1378 # devices, to get a faster probe.  Setting this below 10000 violate
 1379 # the IDE specs, but may still work for you (it will work for most
 1380 # people).
 1381 #
 1382 options         IDE_DELAY=8000  # Be optimistic about Joe IDE device
 1383 
 1384 # IDE CD-ROM & CD-R/RW  driver - requires wdc controller
 1385 device          wcd
 1386 
 1387 # IDE floppy driver - requires wdc controller
 1388 device          wfd
 1389 
 1390 # IDE tape driver - requires wdc controller
 1391 device          wst
 1392 
 1393 
 1394 #
 1395 # Standard floppy disk controllers: `fdc' and `fd'
 1396 #
 1397 device          fdc0    at isa? port IO_FD1 irq 6 drq 2
 1398 #
 1399 # FDC_DEBUG enables floppy debugging.  Since the debug output is huge, you
 1400 # gotta turn it actually on by setting the variable fd_debug with DDB,
 1401 # however.
 1402 options         FDC_DEBUG
 1403 
 1404 device          fd0     at fdc0 drive 0
 1405 device          fd1     at fdc0 drive 1
 1406 
 1407 # M-systems DiskOnchip products see src/sys/contrib/dev/fla/README
 1408 device          fla0    at isa?
 1409 
 1410 #
 1411 # Other standard PC hardware: `mse', `sio', etc.
 1412 #
 1413 # mse: Logitech and ATI InPort bus mouse ports
 1414 # sio: serial ports (see sio(4))
 1415 
 1416 device          mse0    at isa? port 0x23c irq 5
 1417 
 1418 device          sio0    at isa? port IO_COM1 flags 0x10 irq 4
 1419 
 1420 #
 1421 # `flags' for serial drivers that support consoles (only for sio now):
 1422 #       0x10    enable console support for this unit.  The other console flags
 1423 #               are ignored unless this is set.  Enabling console support does
 1424 #               not make the unit the preferred console - boot with -h or set
 1425 #               the 0x20 flag for that.  Currently, at most one unit can have
 1426 #               console support; the first one (in config file order) with
 1427 #               this flag set is preferred.  Setting this flag for sio0 gives
 1428 #               the old behaviour.
 1429 #       0x20    force this unit to be the console (unless there is another
 1430 #               higher priority console).  This replaces the COMCONSOLE option.
 1431 #       0x40    reserve this unit for low level console operations.  Do not
 1432 #               access the device in any normal way.
 1433 #       0x80    use this port for serial line gdb support in ddb.
 1434 #
 1435 # PnP `flags' (set via userconfig using pnp x flags y)
 1436 #       0x1     disable probing of this device.  Used to prevent your modem
 1437 #               from being attached as a PnP modem.
 1438 #
 1439 
 1440 # Options for serial drivers that support consoles (only for sio now):
 1441 options         BREAK_TO_DEBUGGER       #a BREAK on a comconsole goes to
 1442                                         #DDB, if available.
 1443 options         CONSPEED=115200         # speed for serial console
 1444                                         # (default 9600)
 1445 
 1446 # Solaris implements a new BREAK which is initiated by a character
 1447 # sequence CR ~ ^b which is similar to a familiar pattern used on
 1448 # Sun servers by the Remote Console.
 1449 options         ALT_BREAK_TO_DEBUGGER
 1450 
 1451 # Options for sio:
 1452 options         COM_ESP                 #code for Hayes ESP
 1453 options         COM_MULTIPORT           #code for some cards with shared IRQs
 1454 
 1455 # Other flags for sio that aren't documented in the man page.
 1456 #       0x20000 enable hardware RTS/CTS and larger FIFOs.  Only works for
 1457 #               ST16650A-compatible UARTs.
 1458 
 1459 # PCI Universal Communications driver
 1460 # Supports various single and multi port PCI serial cards. Maybe later
 1461 # also the parallel ports on combination serial/parallel cards. New cards
 1462 # can be added in src/sys/dev/puc/pucdata.c.
 1463 #
 1464 # If the PUC_FASTINTR option is used the driver will try to use fast
 1465 # interrupts. The card must then be the only user of that interrupt.
 1466 # Interrupts cannot be shared when using PUC_FASTINTR.
 1467 device          puc
 1468 options         PUC_FASTINTR
 1469 
 1470 #
 1471 # Network interfaces: `cx', `ed', `el', `ep', `ie', `is', `le', `lnc'
 1472 #
 1473 # ar: Arnet SYNC/570i hdlc sync 2/4 port V.35/X.21 serial driver (requires sppp)
 1474 # arl:  Aironet Arlan 655 wireless adapters.
 1475 # ce: Cronyx Tau-PCI/32 sync single/dual port G.703/E1 serial adaptor
 1476 #     with 32 HDLC subchannels (requires sppp (default), or NETGRAPH if
 1477 #     NETGRAPH_CRONYX is configured)
 1478 # cm: Arcnet SMC COM90c26 / SMC COM90c56
 1479 #     (and SMC COM90c66 in '56 compatibility mode) adapters.
 1480 # cp: Cronyx Tau-PCI sync single/dual/four port
 1481 #     V.35/RS-232/RS-530/RS-449/X.21/G.703/E1/E3/T3/STS-1
 1482 #     serial adaptor (requires sppp (default), or NETGRAPH if
 1483 #     NETGRAPH_CRONYX is configured)
 1484 # cs: IBM Etherjet and other Crystal Semi CS89x0-based adapters
 1485 # ctau: Cronyx Tau sync dual port V.35/RS-232/RS-530/RS-449/X.21/G.703/E1
 1486 #       serial adaptor (requires sppp (default), or NETGRAPH if
 1487 #       NETGRAPH_CRONYX is configured)
 1488 # cx: Cronyx Sigma multiport sync/async adapter (requires sppp (default),
 1489 #     or NETGRAPH if NETGRAPH_CRONYX is configured)
 1490 # ed: Western Digital and SMC 80xx; Novell NE1000 and NE2000; 3Com 3C503
 1491 # el: 3Com 3C501 (slow!)
 1492 # ep: 3Com 3C509
 1493 # ex: Intel EtherExpress Pro/10 and other i82595-based adapters
 1494 # fe: Fujitsu MB86960A/MB86965A Ethernet
 1495 # ie: AT&T StarLAN 10 and EN100; 3Com 3C507; unknown NI5210; Intel EtherExpress
 1496 # le: Digital Equipment EtherWorks 2 and EtherWorks 3 (DEPCA, DE100,
 1497 #     DE101, DE200, DE201, DE202, DE203, DE204, DE205, DE422)
 1498 # lnc: Lance/PCnet cards (Isolan, Novell NE2100, NE32-VL, AMD Am7990 & Am79C960)
 1499 # rdp: RealTek RTL 8002-based pocket ethernet adapters
 1500 # sbni: Granch SBNI12-xx adapters
 1501 # sbsh: Granch SBNI16 SHDSL modem PCI adapters
 1502 # sr: RISCom/N2 hdlc sync 1/2 port V.35/X.21 serial driver (requires sppp)
 1503 # wl: Lucent Wavelan (ISA card only).
 1504 # awi: IEEE 802.11b PRISM I cards.
 1505 # wi: Lucent WaveLAN/IEEE 802.11 PCMCIA adapters. Note: this supports both
 1506 #     the PCMCIA and ISA cards: the ISA card is really a PCMCIA to ISA
 1507 #     bridge with a PCMCIA adapter plugged into it.
 1508 # an: Aironet 4500/4800 802.11 wireless adapters. Supports the PCMCIA,
 1509 #     PCI and ISA varieties.
 1510 # xe: Xircom/Intel EtherExpress Pro100/16 PC Card ethernet controller.
 1511 # ray: Raytheon Raylink 802.11 wireless NICs, OEM as Webgear Aviator 2.4GHz
 1512 # oltr: Olicom ISA token-ring adapters OC-3115, OC-3117, OC-3118 and OC-3133
 1513 #       (no options needed)
 1514 #
 1515 device ar0 at isa? port 0x300 irq 10 iomem 0xd0000
 1516 device arl0 at isa? irq 9 iomem 0xd0000
 1517 device ce
 1518 device cm0 at isa? port 0x2e0 irq 9 iomem 0xdc000
 1519 device cp
 1520 device cs0 at isa? port 0x300
 1521 device ctau0 at isa? port 0x240 irq 15 drq 7
 1522 device cx0 at isa? port 0x240 irq 15 drq 7
 1523 device ed0 at isa? port 0x280 irq 5 iomem 0xd8000
 1524 device el0 at isa? port 0x300 irq 9
 1525 device ep
 1526 device ex
 1527 device fe0 at isa? port 0x300
 1528 device ie0 at isa? port 0x300 irq 5 iomem 0xd0000
 1529 device ie1 at isa? port 0x360 irq 7 iomem 0xd0000
 1530 device le0 at isa? port 0x300 irq 5 iomem 0xd0000
 1531 device lnc0 at isa? port 0x280 irq 10 drq 0
 1532 device rdp0 at isa? port 0x378 irq 7 flags 2
 1533 device sbni0 at isa? port 0x210 irq 5 flags 0xefdead
 1534 device sr0 at isa? port 0x300 irq 5 iomem 0xd0000
 1535 device sn0 at isa? port 0x300 irq 10
 1536 device awi
 1537 device wi
 1538 device an
 1539 options         WLCACHE         # enables the signal-strength cache
 1540 options         WLDEBUG         # enables verbose debugging output
 1541 device wl0 at isa? port 0x300
 1542 device xe
 1543 device ray
 1544 
 1545 device oltr0 at isa?
 1546 
 1547 #
 1548 # ATM related options
 1549 #
 1550 # The `en' device provides support for Efficient Networks (ENI)
 1551 # ENI-155 PCI midway cards, and the Adaptec 155Mbps PCI ATM cards (ANA-59x0).
 1552 #
 1553 # atm pseudo-device provides generic atm functions and is required for
 1554 # atm devices.
 1555 # NATM enables the netnatm protocol family that can be used to
 1556 # bypass TCP/IP.
 1557 #
 1558 # the current driver supports only PVC operations (no atm-arp, no multicast).
 1559 # for more details, please read the original documents at
 1560 # http://www.ccrc.wustl.edu/pub/chuck/tech/bsdatm/bsdatm.html
 1561 #
 1562 pseudo-device   atm
 1563 device          en
 1564 options         NATM                    #native ATM
 1565 
 1566 #
 1567 # Audio drivers: `snd', `sb', `pas', `gus', `pca'
 1568 #
 1569 # snd: Voxware sound support code
 1570 # sb: SoundBlaster PCM - SoundBlaster, SB Pro, SB16, ProAudioSpectrum
 1571 # sbxvi: SoundBlaster 16
 1572 # sbmidi: SoundBlaster 16 MIDI interface
 1573 # pas: ProAudioSpectrum PCM and MIDI
 1574 # gus: Gravis Ultrasound - Ultrasound, Ultrasound 16, Ultrasound MAX
 1575 # gusxvi: Gravis Ultrasound 16-bit PCM  (do not use)
 1576 # mss: Microsoft Sound System
 1577 # css: Crystal Sound System (CSS 423x PnP)
 1578 # sscape: Ensoniq Soundscape MIDI interface
 1579 # sscape_mss: Ensoniq Soundscape PCM (requires sscape)
 1580 # opl: Yamaha OPL-2 and OPL-3 FM - SB, SB Pro, SB 16, ProAudioSpectrum
 1581 # uart: stand-alone 6850 UART for MIDI
 1582 # mpu: Roland MPU-401 stand-alone card
 1583 #
 1584 # Note: It has been reported that ISA DMA with the SoundBlaster will
 1585 # lock up the machine (PR docs/5358).  If this happens to you,
 1586 # turning off USWC write posting in your machine's BIOS may fix
 1587 # the problem.
 1588 #
 1589 # Beware!  The addresses specified below are also hard-coded in
 1590 # src/sys/i386/isa/sound/sound_config.h.  If you change the values here, you
 1591 # must also change the values in the include file.
 1592 #
 1593 # pcm: PCM audio through various sound cards.
 1594 #
 1595 # This has support for a large number of new audio cards, based on
 1596 # CS423x, OPTi931, Yamaha OPL-SAx, and also for SB16, GusPnP.
 1597 # For more information about this driver and supported cards,
 1598 # see the pcm.4 man page.
 1599 #
 1600 # The flags of the device tells the device a bit more info about the
 1601 # device that normally is obtained through the PnP interface.
 1602 #       bit  2..0   secondary DMA channel;
 1603 #       bit  4      set if the board uses two dma channels;
 1604 #       bit 15..8   board type, overrides autodetection; leave it
 1605 #                   zero if don't know what to put in (and you don't,
 1606 #                   since this is unsupported at the moment...).
 1607 #
 1608 # This driver will use the new PnP code if it's available.
 1609 #
 1610 # pca: PCM audio through your PC speaker
 1611 #
 1612 # If you have a GUS-MAX card and want to use the CS4231 codec on the
 1613 # card the drqs for the gus max must be 8 bit (1, 2, or 3).
 1614 #
 1615 # If you would like to use the full duplex option on the gus, then define
 1616 # flags to be the ``read dma channel''.
 1617 #
 1618 # options BROKEN_BUS_CLOCK      #PAS-16 isn't working and OPTI chipset
 1619 # options SYMPHONY_PAS          #PAS-16 isn't working and SYMPHONY chipset
 1620 # options EXCLUDE_SBPRO         #PAS-16
 1621 # options SBC_IRQ=5             #PAS-16. Must match irq on sb0 line.
 1622 # PAS16: The order of the pas0/sb0/opl0 is important since the
 1623 #       sb emulation is enabled in the pas-16 attach.
 1624 #
 1625 # To override the GUS defaults use:
 1626 # options GUS_DMA2
 1627 # options GUS_DMA
 1628 # options GUS_IRQ
 1629 #
 1630 # The src/sys/i386/isa/sound/sound.doc has more information.
 1631 
 1632 # Controls all "VOXWARE" driver sound devices.  See Luigi's driver
 1633 # below for an alternate which may work better for some cards.
 1634 #
 1635 #device         snd
 1636 #device pas0    at isa? port 0x388 irq 10 drq 6
 1637 #device sb0     at isa? port 0x220 irq 5 drq 1
 1638 #device sbxvi0  at isa? drq 5
 1639 #device sbmidi0 at isa? port 0x330
 1640 #device awe0    at isa? port 0x620
 1641 #device gus0    at isa? port 0x220 irq 12 drq 1
 1642 ##device gus0   at isa? port 0x220 irq 12 drq 1 flags 0x3
 1643 #device mss0    at isa? port 0x530 irq 10 drq 1
 1644 #device css0    at isa? port 0x534 irq 5 drq 1 flags 0x08
 1645 #device sscape0 at isa? port 0x330 irq 9 drq 0
 1646 #device trix0   at isa? port 0x330 irq 6 drq 0
 1647 #device sscape_mss0 at isa? port 0x534 irq 5 drq 1
 1648 #device opl0    at isa? port 0x388
 1649 #device mpu0    at isa? port 0x330 irq 6 drq 0
 1650 #device uart0   at isa? port 0x330 irq 5
 1651 
 1652 # The newpcm driver (use INSTEAD of snd0 and all VOXWARE drivers!).
 1653 # Note that motherboard sound devices may require options PNPBIOS.
 1654 #
 1655 # Supported cards include:
 1656 # Creative SoundBlaster ISA PnP/non-PnP
 1657 # Supports ESS and Avance ISA chips as well.
 1658 # Gravis UltraSound ISA PnP/non-PnP
 1659 # Crystal Semiconductor CS461x/428x PCI
 1660 # Neomagic 256AV (ac97)
 1661 # Most of the more common ISA/PnP sb/mss/ess compatible cards.
 1662 
 1663 # For non-pnp sound cards with no bridge drivers only:
 1664 device          pcm0 at isa? irq 10 drq 1 flags 0x0
 1665 #
 1666 # For PnP/PCI sound cards
 1667 device          pcm
 1668 
 1669 # The bridge drivers for sound cards.  These can be seperately configured
 1670 # for providing services to the likes of new-midi (not in the tree yet).
 1671 # When used with 'device pcm' they also provide pcm sound services.
 1672 #
 1673 # sbc:  Creative SoundBlaster ISA PnP/non-PnP
 1674 #       Supports ESS and Avance ISA chips as well.
 1675 # gusc: Gravis UltraSound ISA PnP/non-PnP
 1676 # csa:  Crystal Semiconductor CS461x/428x PCI
 1677 
 1678 # For non-PnP cards:
 1679 device          sbc0    at isa? port 0x220 irq 5 drq 1 flags 0x15
 1680 device          gusc0   at isa? port 0x220 irq 5 drq 1 flags 0x13
 1681 
 1682 # Not controlled by `snd'
 1683 device          pca0 at isa? port IO_TIMER1
 1684 
 1685 #
 1686 # Miscellaneous hardware:
 1687 #
 1688 # mcd: Mitsumi CD-ROM using proprietary (non-ATAPI) interface
 1689 # scd: Sony CD-ROM using proprietary (non-ATAPI) interface
 1690 # wt: Wangtek and Archive QIC-02/QIC-36 tape drives
 1691 # ctx: Cortex-I frame grabber
 1692 # apm: Laptop Advanced Power Management (experimental)
 1693 # spigot: The Creative Labs Video Spigot video-acquisition board
 1694 # meteor: Matrox Meteor video capture board
 1695 # bktr: Brooktree bt848/848a/849a/878/879 video capture and TV Tuner board
 1696 # cy: Cyclades serial driver
 1697 # dgb: Digiboard PC/Xi and PC/Xe series driver (ALPHA QUALITY!)
 1698 # dgm: Digiboard PC/Xem driver
 1699 # gp:  National Instruments AT-GPIB and AT-GPIB/TNT board
 1700 # asc: GI1904-based hand scanners, e.g. the Trust Amiscan Grey
 1701 # gsc: Genius GS-4500 hand scanner.
 1702 # joy: joystick
 1703 # labpc: National Instrument's Lab-PC and Lab-PC+
 1704 # rc: RISCom/8 multiport card
 1705 # rp: Comtrol Rocketport(ISA) - single card
 1706 # tw: TW-523 power line interface for use with X-10 home control products
 1707 # si: Specialix SI/XIO 4-32 port terminal multiplexor
 1708 # spic: Sony Programmable I/O controller (VAIO notebooks)
 1709 # stl: Stallion EasyIO and EasyConnection 8/32 (ISA and PCI), EasyConnection 8/64 PCI
 1710 # stli: Stallion EasyConnection 8/64 ISA/EISA, ONboard, Brumby (intelligent)
 1711 # nmdm: nullmodem terminal driver (see nmdm(4))
 1712 
 1713 # Notes on APM
 1714 #  The flags takes the following meaning for apm0:
 1715 #    0x0020  Statclock is broken.
 1716 #  If apm is omitted, some systems require sysctl -w kern.timecounter.method=1
 1717 #  for correct timekeeping.
 1718 
 1719 # Notes on the spigot:
 1720 #  The video spigot is at 0xad6.  This port address can not be changed.
 1721 #  The irq values may only be 10, 11, or 15
 1722 #  I/O memory is an 8kb region.  Possible values are:
 1723 #    0a0000, 0a2000, ..., 0fffff, f00000, f02000, ..., ffffff
 1724 #    The start address must be on an even boundary.
 1725 #  Add the following option if you want to allow non-root users to be able
 1726 #  to access the spigot.  This option is not secure because it allows users
 1727 #  direct access to the I/O page.
 1728 #       options SPIGOT_UNSECURE
 1729 
 1730 # Notes on the Comtrol Rocketport driver:
 1731 #
 1732 # The exact values used for rp0 depend on how many boards you have
 1733 # in the system.  The manufacturer's sample configs are listed as:
 1734 #
 1735 #   Comtrol Rocketport ISA single card
 1736 #               device  rp0     at isa? port 0x280
 1737 #
 1738 #   If instead you have two ISA cards, one installed at 0x100 and the
 1739 #   second installed at 0x180, then you should add the following to
 1740 #   your kernel configuration file:
 1741 #
 1742 #               device  rp0     at isa? port 0x100
 1743 #               device  rp1     at isa? port 0x180
 1744 #
 1745 #   For 4 ISA cards, it might be something like this:
 1746 #
 1747 #               device  rp0     at isa? port 0x180
 1748 #               device  rp1     at isa? port 0x100
 1749 #               device  rp2     at isa? port 0x340
 1750 #               device  rp3     at isa? port 0x240
 1751 #
 1752 #   And for PCI cards, you only need say:
 1753 #
 1754 #               device rp
 1755 
 1756 # Notes on the Digiboard driver:
 1757 #
 1758 # The following flag values have special meanings:
 1759 #       0x01 - alternate layout of pins (dgb & dgm)
 1760 #       0x02 - use the windowed PC/Xe in 64K mode (dgb only)
 1761 
 1762 # Notes on the Specialix SI/XIO driver:
 1763 #  **This is NOT a Specialix supported Driver!**
 1764 #  The host card is memory, not IO mapped.
 1765 #  The Rev 1 host cards use a 64K chunk, on a 32K boundary.
 1766 #  The Rev 2 host cards use a 32K chunk, on a 32K boundary.
 1767 #  The cards can use an IRQ of 11, 12 or 15.
 1768 
 1769 # Notes on the Stallion stl and stli drivers:
 1770 #  See src/i386/isa/README.stl for complete instructions.
 1771 #  This is version 2.0.0, unsupported by Stallion.
 1772 #  The stl driver has a secondary IO port hard coded at 0x280.  You need
 1773 #     to change src/i386/isa/stallion.c if you reconfigure this on the boards.
 1774 #  The "flags" and "iosiz" settings on the stli driver depend on the board:
 1775 #       EasyConnection 8/64 ISA:     flags 23         iosiz 0x1000
 1776 #       EasyConnection 8/64 EISA:    flags 24         iosiz 0x10000
 1777 #       EasyConnection 8/64 MCA:     flags 25         iosiz 0x1000
 1778 #       ONboard ISA:                 flags 4          iosiz 0x10000
 1779 #       ONboard EISA:                flags 7          iosiz 0x10000
 1780 #       ONboard MCA:                 flags 3          iosiz 0x10000
 1781 #       Brumby:                      flags 2          iosiz 0x4000
 1782 #       Stallion:                    flags 1          iosiz 0x10000
 1783 #  For the PCI cards, "device stl" will suffice.
 1784 
 1785 device          mcd0    at isa? port 0x300 irq 10
 1786 # for the Sony CDU31/33A CDROM
 1787 device          scd0    at isa? port 0x230
 1788 # for the SoundBlaster 16 multicd - up to 4 devices
 1789 device          wt0     at isa? port 0x300 irq 5 drq 1
 1790 device          ctx0    at isa? port 0x230 iomem 0xd0000
 1791 device          spigot0 at isa? port 0xad6 irq 15 iomem 0xee000
 1792 device          apm0
 1793 device          gp0     at isa? port 0x2c0
 1794 device          gsc0    at isa? port IO_GSC1 drq 3
 1795 device          joy0    at isa? port IO_GAME
 1796 device          cy0     at isa? irq 10 iomem 0xd4000 iosiz 0x2000
 1797 options         CY_PCI_FASTINTR         # Use with cy_pci unless irq is shared
 1798 device          dgb0    at isa? port 0x220 iomem 0xfc000
 1799 options         NDGBPORTS=16            # Defaults to 16*NDGB
 1800 device          dgm0    at isa? port 0x104 iomem 0xd0000
 1801 device          labpc0  at isa? port 0x260 irq 5
 1802 device          rc0     at isa? port 0x220 irq 12
 1803 device          rp0     at isa? port 0x280
 1804 # the port and irq for tw0 are fictitious
 1805 device          tw0     at isa? port 0x380 irq 11
 1806 device          si0     at isa? iomem 0xd0000 irq 12
 1807 device          asc0    at isa? port IO_ASC1 drq 3 irq 10
 1808 device          spic0   at isa? irq 0 port 0x10a0
 1809 device          stl0    at isa? port 0x2a0 irq 10
 1810 device          stli0   at isa? port 0x2a0 iomem 0xcc000 flags 23 iosiz 0x1000
 1811 # You are unlikely to have the hardware for loran0 <phk@FreeBSD.org>
 1812 device          loran0  at isa? irq 5
 1813 # HOT1 Xilinx 6200 card (http://www.vcc.com/)
 1814 device          xrpu
 1815 # nullmodem terminal driver
 1816 device          nmdm
 1817 
 1818 #
 1819 # MCA devices:
 1820 #
 1821 # The MCA bus device is `mca'.  It provides auto-detection and
 1822 # configuration support for all devices on the MCA bus.
 1823 #
 1824 # The 'aha' device provides support for the Adaptec 1640
 1825 #
 1826 # The 'bt' device provides support for various Buslogic/Bustek
 1827 # and Storage Dimensions SCSI adapters.
 1828 #
 1829 # The 'ep' device provides support for the 3Com 3C529 ethernet card.
 1830 #
 1831 device          mca
 1832 
 1833 #
 1834 # EISA devices:
 1835 #
 1836 # The EISA bus device is `eisa'.  It provides auto-detection and
 1837 # configuration support for all devices on the EISA bus.
 1838 #
 1839 # The `ahb' device provides support for the Adaptec 174X adapter.
 1840 #
 1841 # The `ahc' device provides support for the Adaptec 274X and 284X
 1842 # adapters.  The 284X, although a VLB card, responds to EISA probes.
 1843 #
 1844 # fea: DEC DEFEA EISA FDDI adapter
 1845 #
 1846 device          eisa
 1847 device          ahb
 1848 device          ahc
 1849 device          fea
 1850 
 1851 # The aic7xxx driver will attempt to use memory mapped I/O for all PCI
 1852 # controllers that have it configured only if this option is set. Unfortunately,
 1853 # this doesn't work on some motherboards, which prevents it from being the
 1854 # default.
 1855 options         AHC_ALLOW_MEMIO
 1856 
 1857 # The adw driver will attempt to use memory mapped I/O for all PCI
 1858 # controllers that have it configured only if this option is set.
 1859 options         ADW_ALLOW_MEMIO
 1860 
 1861 # By default, only 10 EISA slots are probed, since the slot numbers
 1862 # above clash with the configuration address space of the PCI subsystem,
 1863 # and the EISA probe is not very smart about this.  This is sufficient
 1864 # for most machines, but in particular the HP NetServer LC series comes
 1865 # with an onboard AIC7770 dual-channel SCSI controller on EISA slot #11,
 1866 # thus you need to bump this figure to 12 for them.
 1867 options         EISA_SLOTS=12
 1868 
 1869 #
 1870 # PCI devices & PCI options:
 1871 #
 1872 # The main PCI bus device is `pci'.  It provides auto-detection and
 1873 # configuration support for all devices on the PCI bus, using either
 1874 # configuration mode defined in the PCI specification.
 1875 
 1876 device          pci
 1877 
 1878 # PCI options
 1879 #
 1880 #Enable pci resources left off by a "lazy" BIOS:
 1881 options         PCI_ENABLE_IO_MODES
 1882 #options        PCI_QUIET       #quiets PCI code on chipset settings
 1883 
 1884 # AGP GART support
 1885 #
 1886 device          agp
 1887 
 1888 
 1889 # The `ahc' device provides support for the Adaptec 29/3940(U)(W)
 1890 # and motherboard based AIC7870/AIC7880 adapters.
 1891 #
 1892 # The 'ahd' device provides support for the Adaptec 79xx Ultra320
 1893 # SCSI adapters. Options are documented in the ahd(4) manpage:
 1894 options         AHD_DEBUG
 1895 options         AHD_DEBUG_OPTS=0xffffffff
 1896 options         AHD_REG_PRETTY_PRINT
 1897 #options        AHD_TMODE_ENABLE=0xff
 1898 #
 1899 # The `amd' device provides support for the AMD 53C974 SCSI host
 1900 # adapter chip as found on devices such as the Tekram DC-390(T).
 1901 #
 1902 # The `bce` device provides support for Broadcom NetXtreme II
 1903 # (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet adapters.
 1904 #
 1905 # The `bfe' device provides support for Broadcom 440x fast ethernet
 1906 # adapters.  These are commonly included on several popular motherboards
 1907 # from Asus and on some DELL laptops.
 1908 #
 1909 # The `bge' device provides support for gigabit ethernet adapters
 1910 # based on the Broadcom BCM570x familiy of controllers, including the
 1911 # 3Com 3c996-T, the Netgear GA302T, the SysKonnect SK-9D21 and SK-9D41,
 1912 # and the embedded gigE NICs on Dell PowerEdge 2550 servers.
 1913 #
 1914 # The `ncr' device provides support for the NCR 53C810 and 53C825
 1915 # self-contained SCSI host adapters.
 1916 #
 1917 # The `isp' device provides support for the Qlogic ISP 1020, 1040
 1918 # nd 1040B PCI SCSI host adapters, ISP 1240 Dual Ultra SCSI,
 1919 # ISP 1080 and 1280 (Dual) Ultra2, ISP 12160 Ultra3 SCSI, as well as
 1920 # the Qlogic ISP 2100 and ISP 2200 Fibre Channel Host Adapters.
 1921 #
 1922 # The `dc' device provides support for PCI fast ethernet adapters
 1923 # based on the DEC/Intel 21143 and various workalikes including:
 1924 # the ADMtek AL981 Comet and AN985 Centaur, the ASIX Electronics
 1925 # AX88140A and AX88141, the Davicom DM9100 and DM9102, the Lite-On
 1926 # 82c168 and 82c169 PNIC, the Lite-On/Macronix LC82C115 PNIC II
 1927 # and the Macronix 98713/98713A/98715/98715A/98725 PMAC. This driver
 1928 # replaces the old al, ax, dm, pn and mx drivers.  List of brands:
 1929 # Digital DE500-BA, Kingston KNE100TX, D-Link DFE-570TX, SOHOware SFA110, 
 1930 # SVEC PN102-TX, CNet Pro110B, 120A, and 120B, Compex RL100-TX, 
 1931 # LinkSys LNE100TX, LNE100TX V2.0, Jaton XpressNet, Alfa Inc GFC2204,
 1932 # KNE110TX.
 1933 #
 1934 # The `de' device provides support for the Digital Equipment DC21040
 1935 # self-contained Ethernet adapter.
 1936 #
 1937 # The `em' device provides support for the Intel Pro/1000 Family of Gigabit
 1938 # adapters (82542, 82543, 82544, 82540).
 1939 #
 1940 # The `fxp' device provides support for the Intel EtherExpress Pro/100B
 1941 # PCI Fast Ethernet adapters.
 1942 #
 1943 # The `gx' device provides support for the Intel Pro/1000 Gigabit Ethernet
 1944 # PCI adapters (82542, 82543-F, 82543-T).
 1945 #
 1946 # The 'lge' device provides support for PCI gigabit ethernet adapters
 1947 # based on the Level 1 LXT1001 NetCellerator chipset. This includes the
 1948 # D-Link DGE-500SX, SMC TigerCard 1000 (SMC9462SX), and some Addtron cards.
 1949 #
 1950 # The 'my' device provides support for the Myson MTD80X and MTD89X PCI
 1951 # Fast Ethernet adapters.
 1952 #
 1953 # The 'nge' device provides support for PCI gigabit ethernet adapters
 1954 # based on the National Semiconductor DP83820 and DP83821 chipset. This
 1955 # includes the SMC EZ Card 1000 (SMC9462TX), D-Link DGE-500T, Asante
 1956 # FriendlyNet GigaNIX 1000TA and 1000TPC, the Addtron AEG320T, the
 1957 # LinkSys EG1032 and EG1064, the Surecom EP-320G-TX and the Netgear GA622T.
 1958 #
 1959 # The 'pcn' device provides support for PCI fast ethernet adapters based
 1960 # on the AMD Am79c97x chipsets, including the PCnet/FAST, PCnet/FAST+,
 1961 # PCnet/PRO and PCnet/Home. These were previously handled by the lnc
 1962 # driver (and still will be if you leave this driver out of the kernel).
 1963 #
 1964 # The 'rl' device provides support for PCI fast ethernet adapters based
 1965 # on the RealTek 8129/8139 chipset. Note that the RealTek driver defaults
 1966 # to using programmed I/O to do register accesses because memory mapped
 1967 # mode seems to cause severe lockups on SMP hardware. This driver also
 1968 # supports the Accton EN1207D `Cheetah' adapter, which uses a chip called
 1969 # the MPX 5030/5038, which is either a RealTek in disguise or a RealTek
 1970 # workalike.  Note that the D-Link DFE-530TX+ uses the RealTek chipset
 1971 # and is supported by this driver, not the 'vr' driver.
 1972 #
 1973 # The 'sf' device provides support for Adaptec Duralink PCI fast
 1974 # ethernet adapters based on the Adaptec AIC-6915 "starfire" controller.
 1975 # This includes dual and quad port cards, as well as one 100baseFX card.
 1976 # Most of these are 64-bit PCI devices, except for one single port
 1977 # card which is 32-bit.
 1978 #
 1979 # The 'ste' device provides support for adapters based on the Sundance
 1980 # Technologies ST201 PCI fast ethernet controller. This includes the
 1981 # D-Link DFE-550TX.
 1982 #
 1983 # The 'sis' device provides support for adapters based on the Silicon
 1984 # Integrated Systems SiS 900 and SiS 7016 PCI fast ethernet controller
 1985 # chips.
 1986 #
 1987 # The 'sk' device provides support for the SysKonnect SK-984x series
 1988 # PCI gigabit ethernet NICs. This includes the SK-9841 and SK-9842
 1989 # single port cards (single mode and multimode fiber) and the
 1990 # SK-9843 and SK-9844 dual port cards (also single mode and multimode).
 1991 # The driver will autodetect the number of ports on the card and
 1992 # attach each one as a separate network interface.
 1993 #
 1994 # The 'ti' device provides support for PCI gigabit ethernet NICs based
 1995 # on the Alteon Networks Tigon 1 and Tigon 2 chipsets. This includes the
 1996 # Alteon AceNIC, the 3Com 3c985, the Netgear GA620 and various others.
 1997 # Note that you will probably want to bump up NMBCLUSTERS a lot to use
 1998 # this driver.
 1999 #
 2000 # The 'tl' device provides support for the Texas Instruments TNETE100
 2001 # series 'ThunderLAN' cards and integrated ethernet controllers. This
 2002 # includes several Compaq Netelligent 10/100 cards and the built-in
 2003 # ethernet controllers in several Compaq Prosignia, Proliant and
 2004 # Deskpro systems. It also supports several Olicom 10Mbps and 10/100
 2005 # boards.
 2006 #
 2007 # The `tx' device provides support for the SMC 9432 TX, BTX and FTX cards.
 2008 #
 2009 # The `txp' device provides support for the 3Com 3cR990 "Typhoon"
 2010 # 10/100 adapters.
 2011 #
 2012 # The `vr' device provides support for various fast ethernet adapters
 2013 # based on the VIA Technologies VT3043 `Rhine I' and VT86C100A `Rhine II'
 2014 # chips, including the D-Link DFE530TX (see 'rl' for DFE530TX+), the Hawking 
 2015 # Technologies PN102TX, and the AOpen/Acer ALN-320.
 2016 #
 2017 # The `vx' device provides support for the 3Com 3C590 and 3C595
 2018 # early support
 2019 #
 2020 # The `wb' device provides support for various fast ethernet adapters
 2021 # based on the Winbond W89C840F chip. Note: this is not the same as
 2022 # the Winbond W89C940F, which is an NE2000 clone.
 2023 #
 2024 # The `wx' device provides support for the Intel Gigabit Ethernet
 2025 # PCI card (`Wiseman').
 2026 #
 2027 # The `xl' device provides support for the 3Com 3c900, 3c905 and
 2028 # 3c905B (Fast) Etherlink XL cards and integrated controllers. This
 2029 # includes the integrated 3c905B-TX chips in certain Dell Optiplex and
 2030 # Dell Precision desktop machines and the integrated 3c905-TX chips
 2031 # in Dell Latitude laptop docking stations.
 2032 #
 2033 # The `fpa' device provides support for the Digital DEFPA PCI FDDI
 2034 # adapter. pseudo-device fddi is also needed.
 2035 #
 2036 # The `meteor' device is a PCI video capture board. It can also have the
 2037 # following options:
 2038 #   options METEOR_ALLOC_PAGES=xxx      preallocate kernel pages for data entry
 2039 #       figure (ROWS*COLUMN*BYTES_PER_PIXEL*FRAME+PAGE_SIZE-1)/PAGE_SIZE
 2040 #   options METEOR_DEALLOC_PAGES        remove all allocated pages on close(2)
 2041 #   options METEOR_DEALLOC_ABOVE=xxx    remove all allocated pages above the
 2042 #       specified amount. If this value is below the allocated amount no action
 2043 #       taken
 2044 #   options METEOR_SYSTEM_DEFAULT={METEOR_PAL|METEOR_NTSC|METEOR_SECAM}, used
 2045 #       for initialization of fps routine when a signal is not present.
 2046 #
 2047 # The 'bktr' device is a PCI video capture device using the Brooktree
 2048 # bt848/bt848a/bt849a/bt878/bt879 chipset. When used with a TV Tuner it forms a
 2049 # TV card, e.g. Miro PC/TV, Hauppauge WinCast/TV WinTV, VideoLogic Captivator,
 2050 # Intel Smart Video III, AverMedia, IMS Turbo, FlyVideo.
 2051 #
 2052 # options       OVERRIDE_CARD=xxx
 2053 # options       OVERRIDE_TUNER=xxx
 2054 # options       OVERRIDE_MSP=1
 2055 # options       OVERRIDE_DBX=1
 2056 # These options can be used to override the auto detection
 2057 # The current values for xxx are found in src/sys/dev/bktr/bktr_card.h
 2058 # Using sysctl(8) run-time overrides on a per-card basis can be made
 2059 #
 2060 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_PAL
 2061 # or
 2062 # options       BROOKTREE_SYSTEM_DEFAULT=BROOKTREE_NTSC
 2063 # Specifies the default video capture mode.
 2064 # This is required for Dual Crystal (28&35Mhz) boards where PAL is used
 2065 # to prevent hangs during initialisation, e.g. VideoLogic Captivator PCI.
 2066 #
 2067 # options       BKTR_USE_PLL
 2068 # This is required for PAL or SECAM boards with a 28Mhz crystal and no 35Mhz
 2069 # crystal, e.g. some new Bt878 cards.
 2070 #
 2071 # options       BKTR_GPIO_ACCESS
 2072 # This enable IOCTLs which give user level access to the GPIO port.
 2073 #
 2074 # options       BKTR_NO_MSP_RESET
 2075 # Prevents the MSP34xx reset. Good if you initialise the MSP in another OS first
 2076 #
 2077 # options       BKTR_430_FX_MODE
 2078 # Switch Bt878/879 cards into Intel 430FX chipset compatibility mode.
 2079 #
 2080 # options       BKTR_SIS_VIA_MODE
 2081 # Switch Bt878/879 cards into SIS/VIA chipset compatibility mode which is
 2082 # needed for some old SiS and VIA chipset motherboards.
 2083 # This also allows Bt878/879 chips to work on old OPTi (<1997) chipset
 2084 # motherboards and motherboards with bad or incomplete PCI 2.1 support.
 2085 # As a rough guess, old = before 1998
 2086 #
 2087 #
 2088 # The oltr driver supports the following Olicom PCI token-ring adapters
 2089 # OC-3136, OC-3137, OC-3139, OC-3140, OC-3141, OC-3540, OC-3250
 2090 #
 2091 device          ahc             # AHA2940 and onboard AIC7xxx devices
 2092 device          ahd             # AIC79xx devices
 2093 device          amd             # AMD 53C974 (Tekram DC-390(T))
 2094 device          isp             # Qlogic family
 2095 device          ispfw           # Firmware for QLogic HBAs
 2096 device          mpt             # LSI-Logic MPT/Fusion
 2097 device          ncr             # NCR/Symbios Logic
 2098 device          sym             # NCR/Symbios Logic (newer chipsets)
 2099 device          trm             # Tekram DC395U/UW/F and DC315U
 2100 #
 2101 # Options for ISP
 2102 #
 2103 #       ISP_TARGET_MODE         -       enable target mode operation
 2104 #options        ISP_TARGET_MODE=1
 2105 
 2106 # Options used in dev/sym/ (Symbios SCSI driver).
 2107 #options        SYM_SETUP_LP_PROBE_MAP  #-Low Priority Probe Map (bits)
 2108                                         # Allows the ncr to take precedence
 2109                                         # 1 (1<<0) -> 810a, 860
 2110                                         # 2 (1<<1) -> 825a, 875, 885, 895
 2111                                         # 4 (1<<2) -> 895a, 896, 1510d 
 2112 #options        SYM_SETUP_SCSI_DIFF     #-HVD support for 825a, 875, 885
 2113                                         # disabled:0 (default), enabled:1
 2114 #options        SYM_SETUP_PCI_PARITY    #-PCI parity checking
 2115                                         # disabled:0, enabled:1 (default)
 2116 #options        SYM_SETUP_MAX_LUN       #-Number of LUNs supported
 2117                                         # default:8, range:[1..64]
 2118 
 2119 
 2120 # MII bus support is required for some PCI 10/100 ethernet NICs,
 2121 # namely those which use MII-compliant transceivers or implement
 2122 # transceiver control interfaces that operate like an MII. Adding
 2123 # "device miibus0" to the kernel config pulls in support for
 2124 # the generic miibus API and all of the PHY drivers, including a
 2125 # generic one for PHYs that aren't specifically handled by an
 2126 # individual driver.
 2127 device          miibus
 2128 
 2129 # PCI Ethernet NICs that use the common MII bus controller code.
 2130 device          bfe             # Broadcom BCM4401 10/100.
 2131 device          dc              # DEC/Intel 21143 and various workalikes
 2132 device          fxp             # Intel EtherExpress PRO/100B (82557, 82558)
 2133 device          my              # Myson Fast Ethernet (MTD80X, MTD89X)
 2134 device          pcn             # AMD Am79C97x PCI 10/100 NICs
 2135 device          rl              # RealTek 8129/8139
 2136 device          sbsh            # Granch SBNI16 SHDSL modem
 2137 device          sf              # Adaptec AIC-6915 (``Starfire'')
 2138 device          sis             # Silicon Integrated Systems SiS 900/SiS 7016
 2139 device          ste             # Sundance ST201 (D-Link DFE-550TX)
 2140 device          tl              # Texas Instruments ThunderLAN
 2141 device          tx              # SMC EtherPower II (83c17x ``EPIC'')
 2142 device          vr              # VIA Rhine, Rhine II
 2143 device          wb              # Winbond W89C840F
 2144 device          xl              # 3Com 3c90x (``Boomerang'', ``Cyclone'')
 2145 
 2146 # PCI Ethernet NICs.
 2147 device          de              # DEC/Intel DC21x4x (``Tulip'')
 2148 device          txp             # 3Com 3cR990 (``Typhoon'')
 2149 device          vx              # 3Com 3c590, 3c595 (``Vortex'')
 2150 
 2151 # Gigabit Ethernet NICs.
 2152 device          bce             # Broadcom BCM5706/BCM5708 Gigabit Ethernet
 2153 device          bge             # Broadcom BCM570x (``Tigon III'')
 2154 device          em              # Intel Pro/1000 (82542,82543,82544,82540)
 2155 device          gx              # Intel Pro/1000 (82542, 82543)
 2156 device          lge             # Level 1 LXT1001 (``Mercury'')
 2157 device          nge             # NatSemi DP83820 and DP83821
 2158 device          sk              # SysKonnect GEnesis
 2159 device          ti              # Alteon (``Tigon I'', ``Tigon II'')
 2160 device          wx
 2161 
 2162 
 2163 device          fpa
 2164 device          meteor
 2165 #The oltr driver in the ISA section will also find PCI cards.
 2166 #device         oltr0
 2167 
 2168 
 2169 # Brooktree driver has been ported to the new I2C framework. Thus,
 2170 # you'll need to have the following 3 lines in the kernel config.
 2171 #     device smbus
 2172 #     device iicbus
 2173 #     device iicbb
 2174 # The iic and smb devices are only needed if you want to control other
 2175 # I2C slaves connected to the external connector of some cards.
 2176 #
 2177 device          bktr
 2178 
 2179 #
 2180 # PCCARD/PCMCIA
 2181 #
 2182 # card: pccard slots
 2183 # pcic: isa/pccard bridge
 2184 device          pcic0 at isa?
 2185 device          pcic1 at isa?
 2186 device          card
 2187 
 2188 # You may need to reset all pccards after resuming
 2189 options         PCIC_RESUME_RESET       # reset after resume
 2190 
 2191 #
 2192 # Laptop/Notebook options:
 2193 #
 2194 # See also:
 2195 #  apm under `Miscellaneous hardware'
 2196 # above.
 2197 
 2198 # For older notebooks that signal a powerfail condition (external
 2199 # power supply dropped, or battery state low) by issuing an NMI:
 2200 
 2201 options         POWERFAIL_NMI   # make it beep instead of panicing
 2202 
 2203 #
 2204 # SMB bus
 2205 #
 2206 # System Management Bus support is provided by the 'smbus' device.
 2207 # Access to the SMBus device is via the 'smb' device (/dev/smb*),
 2208 # which is a child of the 'smbus' device.
 2209 #
 2210 # Supported devices:
 2211 # smb           standard io through /dev/smb*
 2212 #
 2213 # Supported SMB interfaces:
 2214 # iicsmb        I2C to SMB bridge with any iicbus interface
 2215 # bktr          brooktree848 I2C hardware interface
 2216 # intpm         Intel PIIX4 (82371AB, 82443MX) Power Management Unit
 2217 # alpm          Acer Aladdin-IV/V/Pro2 Power Management Unit
 2218 # ichsmb        Intel ICH SMBus controller chips (82801AA, 82801AB, 82801BA)
 2219 # viapm         VIA VT82C586B,596,686A and VT8233 SMBus controllers
 2220 # amdpm         AMD 756 Power Management Unit
 2221 #
 2222 device          smbus           # Bus support, required for smb below.
 2223 
 2224 device          intpm
 2225 device          alpm
 2226 device          ichsmb
 2227 device          viapm
 2228 device          amdpm
 2229 
 2230 device          smb
 2231 
 2232 #
 2233 # I2C Bus
 2234 #
 2235 # Philips i2c bus support is provided by the `iicbus' device.
 2236 #
 2237 # Supported devices:
 2238 # ic    i2c network interface
 2239 # iic   i2c standard io
 2240 # iicsmb i2c to smb bridge. Allow i2c i/o with smb commands.
 2241 #
 2242 # Supported interfaces:
 2243 # pcf   Philips PCF8584 ISA-bus controller
 2244 # bktr  brooktree848 I2C software interface
 2245 #
 2246 # Other:
 2247 # iicbb generic I2C bit-banging code (needed by lpbb, bktr)
 2248 #
 2249 device          iicbus          # Bus support, required for ic/iic/iicsmb below.
 2250 device          iicbb
 2251 
 2252 device          ic
 2253 device          iic
 2254 device          iicsmb          # smb over i2c bridge
 2255 
 2256 device          pcf0    at isa? port 0x320 irq 5
 2257 
 2258 #
 2259 # ACPI support using the Intel ACPI Component Architecture reference
 2260 # implementation.
 2261 #
 2262 # ACPI_DEBUG enables the use of the debug.acpi.level and debug.acpi.layer
 2263 # kernel environment variables to select initial debugging levels for the
 2264 # Intel ACPICA code.  (Note that the Intel code must also have USE_DEBUGGER
 2265 # defined when it is built).
 2266 #
 2267 # Note that this ACPI support is experimental and it's use may result in
 2268 # machine hangs or kernel panics.
 2269 #
 2270 device          acpica
 2271 options         ACPI_DEBUG
 2272 
 2273 #---------------------------------------------------------------------------
 2274 # ISDN4BSD
 2275 #
 2276 # See /usr/share/examples/isdn/ROADMAP for an introduction to isdn4bsd.
 2277 #
 2278 # i4b passive ISDN cards support contains the following hardware drivers:
 2279 #
 2280 #       isic  - Siemens/Infineon ISDN ISAC/HSCX/IPAC chipset driver
 2281 #       iwic  - Winbond W6692 PCI bus ISDN S/T interface controller
 2282 #       ifpi  - AVM Fritz!Card PCI driver
 2283 #       ifpi2 - AVM Fritz!Card PCI driver Version 2
 2284 #       ihfc  - Cologne Chip HFC ISA/ISA-PnP chipset driver
 2285 #       ifpnp - AVM Fritz!Card PnP driver 
 2286 #       itjc  - Siemens ISAC / TJNet Tiger300/320 chipset
 2287 #
 2288 # i4b active ISDN cards support contains the following hardware drivers:
 2289 #
 2290 #       iavc  - AVM B1 PCI, AVM B1 ISA, AVM T1
 2291 #
 2292 # Note that the ``options'' (if given) and ``device'' lines must BOTH
 2293 # be uncommented to enable support for a given card !
 2294 #
 2295 # In addition to a hardware driver (and probably an option) the mandatory
 2296 # ISDN protocol stack devices and the mandatory support device must be 
 2297 # enabled as well as one or more devices from the optional devices section.
 2298 #
 2299 #---------------------------------------------------------------------------
 2300 # isic driver (Siemens/Infineon chipsets)
 2301 #---------------------------------------------------------------------------
 2302 #
 2303 # ISA bus non-PnP Cards:
 2304 # ----------------------
 2305 #
 2306 # Teles S0/8 or Niccy 1008
 2307 options         TEL_S0_8
 2308 device          isic0   at isa? iomem 0xd0000 irq 5 flags 1
 2309 #
 2310 # Teles S0/16 or Creatix ISDN-S0 or Niccy 1016
 2311 options         TEL_S0_16
 2312 #device         isic0   at isa? port 0xd80 iomem 0xd0000 irq 5 flags 2
 2313 #
 2314 # Teles S0/16.3
 2315 options         TEL_S0_16_3
 2316 #device         isic0   at isa? port 0xd80 irq 5 flags 3
 2317 #
 2318 # AVM A1 or AVM Fritz!Card
 2319 options         AVM_A1
 2320 #device         isic0   at isa? port 0x340 irq 5 flags 4
 2321 #
 2322 # USRobotics Sportster ISDN TA intern
 2323 options         USR_STI
 2324 #device         isic0   at isa? port 0x268 irq 5 flags 7
 2325 #
 2326 # ITK ix1 Micro ( < V.3, non-PnP version )
 2327 options         ITKIX1
 2328 #device         isic0   at isa? port 0x398 irq 10 flags 18
 2329 #
 2330 # ELSA PCC-16
 2331 options         ELSA_PCC16
 2332 #device         isic0   at isa? port 0x360 irq 10 flags 20
 2333 #
 2334 # ISA bus PnP Cards:
 2335 # ------------------
 2336 #
 2337 # Teles S0/16.3 PnP
 2338 options         TEL_S0_16_3_P
 2339 #device         isic
 2340 #
 2341 # Creatix ISDN-S0 P&P
 2342 options         CRTX_S0_P
 2343 #device         isic
 2344 #
 2345 # Dr. Neuhaus Niccy Go@
 2346 options         DRN_NGO
 2347 #device         isic
 2348 #
 2349 # Sedlbauer Win Speed
 2350 options         SEDLBAUER
 2351 #device         isic
 2352 #
 2353 # Dynalink IS64PH
 2354 options         DYNALINK 
 2355 #device         isic
 2356 #
 2357 # ELSA QuickStep 1000pro ISA
 2358 options         ELSA_QS1ISA
 2359 #device         isic
 2360 #
 2361 # ITK ix1 Micro ( V.3, PnP version )
 2362 options         ITKIX1
 2363 #device         isic
 2364 #
 2365 # Siemens I-Surf 2.0
 2366 options         SIEMENS_ISURF2
 2367 #device         isic
 2368 #
 2369 # Asuscom ISDNlink 128K ISAC
 2370 options         ASUSCOM_IPAC
 2371 #device         isic
 2372 #
 2373 # Eicon Diehl DIVA 2.0 and 2.02
 2374 options       EICON_DIVA
 2375 #device         isic
 2376 #
 2377 # PCI bus Cards:
 2378 # --------------
 2379 #
 2380 # ELSA MicroLink ISDN/PCI (same as ELSA QuickStep 1000pro PCI)
 2381 options         ELSA_QS1PCI
 2382 #device         isic
 2383 #
 2384 #---------------------------------------------------------------------------
 2385 #       ifpnp driver for AVM Fritz!Card ISA PnP
 2386 #---------------------------------------------------------------------------
 2387 #
 2388 # AVM Fritz!Card ISA PnP
 2389 device ifpnp
 2390 #
 2391 #---------------------------------------------------------------------------
 2392 #       ihfc driver for Cologne Chip ISA chipsets (experimental!)
 2393 #---------------------------------------------------------------------------
 2394 #
 2395 # Teles 16.3c ISA PnP
 2396 # AcerISDN P10 ISA PnP
 2397 # TELEINT ISDN SPEED No.1
 2398 device ihfc
 2399 #
 2400 #---------------------------------------------------------------------------
 2401 #       ifpi driver for AVM Fritz!Card PCI 1.0 (2.0 unsupported!)
 2402 #---------------------------------------------------------------------------
 2403 #
 2404 # AVM Fritz!Card PCI 1.0
 2405 device  ifpi
 2406 #
 2407 #---------------------------------------------------------------------------
 2408 #       ifpi2 driver for AVM Fritz!Card PCI 2.0
 2409 #---------------------------------------------------------------------------
 2410 #
 2411 # AVM Fritz!Card PCI 2.0
 2412 device  "ifpi2"
 2413 #
 2414 #---------------------------------------------------------------------------
 2415 #       iwic driver for Winbond W6692 chipset
 2416 #---------------------------------------------------------------------------
 2417 #
 2418 # ASUSCOM P-IN100-ST-D (and other Winbond W6692 based cards)
 2419 device  iwic
 2420 #
 2421 #---------------------------------------------------------------------------
 2422 #       itjc driver for Simens ISAC / TJNet Tiger300/320 chipset
 2423 #---------------------------------------------------------------------------
 2424 #
 2425 # Traverse Technologies NETjet-S
 2426 # Teles PCI-TJ
 2427 device  itjc
 2428 #
 2429 #---------------------------------------------------------------------------
 2430 #       iavc driver (AVM active cards, needs i4bcapi driver!)
 2431 #---------------------------------------------------------------------------
 2432 #
 2433 pseudo-device   "i4bcapi"       2
 2434 #
 2435 # AVM B1 PCI
 2436 device          iavc0
 2437 #
 2438 # AVM B1 ISA bus (PnP mode not supported!)
 2439 #device  iavc0 at isa? port 0x150 irq 5
 2440 #
 2441 #
 2442 # ISDN Protocol Stack (mandatory)
 2443 # -------------------------------
 2444 #
 2445 # Q.921 / layer 2 - i4b passive cards D channel handling
 2446 pseudo-device   "i4bq921"
 2447 #
 2448 # Q.931 / layer 3 - i4b passive cards D channel handling
 2449 pseudo-device   "i4bq931"
 2450 #
 2451 # layer 4 - i4b common passive and active card handling
 2452 pseudo-device   "i4b"
 2453 #
 2454 # ISDN devices
 2455 # ------------
 2456 #
 2457 # userland driver to do ISDN tracing (for passive cards only)
 2458 pseudo-device   "i4btrc"        4
 2459 #
 2460 # userland driver to control the whole thing (mandatory)
 2461 pseudo-device   "i4bctl"
 2462 #
 2463 # userland driver for access to raw B channel
 2464 pseudo-device   "i4brbch"       4
 2465 #
 2466 # userland driver for telephony
 2467 pseudo-device   "i4btel"        2
 2468 #
 2469 # network driver for IP over raw HDLC ISDN
 2470 pseudo-device   "i4bipr"        4
 2471 # enable VJ header compression detection for ipr i/f
 2472 options         IPR_VJ
 2473 # enable logging of the first n IP packets to isdnd (n=32 here)
 2474 #options        IPR_LOG=32
 2475 #
 2476 # network driver for sync PPP over ISDN - requires sppp
 2477 pseudo-device   "i4bisppp"      4
 2478 
 2479 
 2480 # Parallel-Port Bus
 2481 #
 2482 # Parallel port bus support is provided by the `ppbus' device.
 2483 # Multiple devices may be attached to the parallel port, devices
 2484 # are automatically probed and attached when found.
 2485 #
 2486 # Supported devices:
 2487 # vpo   Iomega Zip Drive
 2488 #       Requires SCSI disk support ('scbus' and 'da'); the best
 2489 #       performance is achieved with ports in EPP 1.9 mode.
 2490 # lpt   Parallel Printer
 2491 # plip  Parallel network interface
 2492 # ppi   General-purpose I/O ("Geek Port") + IEEE1284 I/O
 2493 # pps   Pulse per second Timing Interface
 2494 # lpbb  Philips official parallel port I2C bit-banging interface
 2495 #
 2496 # Supported interfaces:
 2497 # ppc   ISA-bus parallel port interfaces.
 2498 #
 2499 
 2500 options         PPC_PROBE_CHIPSET # Enable chipset specific detection
 2501                                   # (see flags in ppc(4))
 2502 options         DEBUG_1284      # IEEE1284 signaling protocol debug
 2503 options         PERIPH_1284     # Makes your computer act as a IEEE1284
 2504                                 # compliant peripheral
 2505 options         DONTPROBE_1284  # Avoid boot detection of PnP parallel devices
 2506 options         VP0_DEBUG       # ZIP/ZIP+ debug
 2507 options         LPT_DEBUG       # Printer driver debug
 2508 options         PPC_DEBUG       # Parallel chipset level debug
 2509 options         PLIP_DEBUG      # Parallel network IP interface debug
 2510 options         PCFCLOCK_VERBOSE         # Verbose pcfclock driver
 2511 options         PCFCLOCK_MAX_RETRIES=5   # Maximum read tries (default 10)
 2512 
 2513 device          ppc0    at isa? irq 7
 2514 device          ppbus
 2515 device          vpo
 2516 device          lpt
 2517 device          plip
 2518 device          ppi
 2519 device          pps
 2520 device          lpbb
 2521 device          pcfclock
 2522 
 2523 # Parallel (8255 PPI) basic I/O (mode 0) port (e.g. Advantech PCL-724)
 2524 device pbio0 at isa? port 0x360
 2525 
 2526 # Kernel BOOTP support
 2527 
 2528 options         BOOTP           # Use BOOTP to obtain IP address/hostname
 2529 options         BOOTP_NFSROOT   # NFS mount root filesystem using BOOTP info
 2530 options         BOOTP_NFSV3     # Use NFS v3 to NFS mount root
 2531 options         BOOTP_COMPAT    # Workaround for broken bootp daemons.
 2532 options         BOOTP_WIRED_TO=fxp0 # Use interface fxp0 for BOOTP
 2533 
 2534 #
 2535 # Add tie-ins for a hardware watchdog.  This only enable the hooks;
 2536 # the user must still supply the actual driver.
 2537 #
 2538 options         HW_WDOG
 2539 
 2540 #
 2541 # Set the number of PV entries per process.  Increasing this can
 2542 # stop panics related to heavy use of shared memory. However, that can
 2543 # (combined with large amounts of physical memory) cause panics at
 2544 # boot time due the kernel running out of VM space.
 2545 #
 2546 # If you're tweaking this, you might also want to increase the sysctls
 2547 # "vm.v_free_min", "vm.v_free_reserved", and "vm.v_free_target".
 2548 #
 2549 # The value below is the one more than the default.
 2550 #
 2551 options         PMAP_SHPGPERPROC=201
 2552 
 2553 #
 2554 # Change the size of the kernel virtual address space.  Due to
 2555 # constraints in loader(8) on i386, this must be a multiple of 4.
 2556 # 256 = 1 GB of kernel address space.  Increasing this also causes
 2557 # a reduction of the address space in user processes.  512 splits
 2558 # the 4GB cpu address space in half (2GB user, 2GB kernel).
 2559 #
 2560 options         KVA_PAGES=260
 2561 
 2562 #
 2563 # Disable swapping. This option removes all code which actually performs
 2564 # swapping, so it's not possible to turn it back on at run-time.
 2565 #
 2566 # This is sometimes usable for systems which don't have any swap space
 2567 # (see also sysctls "vm.defer_swapspace_pageouts" and
 2568 # "vm.disable_swapspace_pageouts")
 2569 #
 2570 #options        NO_SWAPPING
 2571 
 2572 # Set the number of sf_bufs to allocate. sf_bufs are virtual buffers
 2573 # for sendfile(2) that are used to map file VM pages, and normally
 2574 # default to a quantity that is roughly 16*MAXUSERS+512. You would
 2575 # typically want about 4 of these for each simultaneous file send.
 2576 #
 2577 options         NSFBUFS=1024
 2578 
 2579 # Set the size of the buffer cache KVM reservation, in buffers.  This is
 2580 # scaled by approximately 16384 bytes.  The system will auto-size the buffer
 2581 # cache if this option is not specified.
 2582 #
 2583 options         NBUF=512
 2584 
 2585 # Set the size of the mbuf KVM reservation, in clusters.  This is scaled
 2586 # by approximately 2048 bytes.  The system will auto-size the mbuf area
 2587 # to (512 + maxusers*16) if this option is not specified.
 2588 # maxusers is in turn computed at boot time depending on available memory
 2589 # or set to the value specified by "options MAXUSERS=x" (x=0 means
 2590 # autoscaling).
 2591 # So, to take advantage of autoscaling, you have to remove both
 2592 # NMBCLUSTERS and MAXUSERS (and NMBUFS) from your kernel config.
 2593 #
 2594 options         NMBCLUSTERS=1024
 2595 
 2596 # Set the number of mbufs available in the system. Each mbuf
 2597 # consumes 256 bytes. The system will autosize this (to 4 times
 2598 # the number of NMBCLUSTERS, depending on other constraints)
 2599 # if this option is not specified.
 2600 #
 2601 options         NMBUFS=4096
 2602 
 2603 # Tune the kernel malloc area parameters.  VM_KMEM_SIZE represents the 
 2604 # minimum, in bytes, and is typically (12*1024*1024) (12MB). 
 2605 # VM_KMEM_SIZE_MAX represents the maximum, typically 200 megabytes.
 2606 # VM_KMEM_SIZE_SCALE can be set to adjust the auto-tuning factor, which
 2607 # typically defaults to 4 (kernel malloc area size is physical memory 
 2608 # divided by the scale factor).
 2609 #
 2610 options         VM_KMEM_SIZE="(10*1024*1024)"
 2611 options         VM_KMEM_SIZE_MAX="(100*1024*1024)"
 2612 options         VM_KMEM_SIZE_SCALE="4"
 2613 
 2614 # Tune the buffer cache maximum KVA reservation, in bytes.  The maximum is
 2615 # usually capped at 200 MB, effecting machines with > 1GB of ram.  Note
 2616 # that the buffer cache only really governs write buffering and disk block
 2617 # translations.  The VM page cache is our primary disk cache and is not
 2618 # effected by the size of the buffer cache.
 2619 #
 2620 options         VM_BCACHE_SIZE_MAX="(100*1024*1024)"
 2621 
 2622 # Tune the swap zone KVA reservation, in bytes.  The default is typically
 2623 # 70 MB, giving the system the ability to manage a maximum of 28GB worth
 2624 # of swapped out data.  
 2625 #
 2626 options         VM_SWZONE_SIZE_MAX="(50*1024*1024)"
 2627 
 2628 #
 2629 # Enable extra debugging code for locks.  This stores the filename and
 2630 # line of whatever acquired the lock in the lock itself, and change a
 2631 # number of function calls to pass around the relevant data.  This is
 2632 # not at all useful unless you are debugging lock code.  Also note
 2633 # that it is likely to break e.g. fstat(1) unless you recompile your
 2634 # userland with -DDEBUG_LOCKS as well.
 2635 #
 2636 options         DEBUG_LOCKS
 2637 
 2638 # Set the amount of time (in seconds) the system will wait before
 2639 # rebooting automatically when a kernel panic occurs.  If set to (-1),
 2640 # the system will wait indefinitely until a key is pressed on the
 2641 # console.
 2642 options         PANIC_REBOOT_WAIT_TIME=16
 2643 
 2644 # Attempt to bypass the buffer cache and put data directly into the
 2645 # userland buffer for read operation when O_DIRECT flag is set on the
 2646 # file.  Both offset and length of the read operation must be
 2647 # multiples of the physical media sector size. 
 2648 #
 2649 #options                DIRECTIO
 2650 
 2651 # Specify a lower limit for the number of swap I/O buffers.  They are
 2652 # (among other things) used when bypassing the buffer cache due to
 2653 # DIRECTIO kernel option enabled and O_DIRECT flag set on file.
 2654 #
 2655 #options                NSWBUF_MIN=120
 2656 
 2657 #
 2658 # SysVR4 ABI emulation
 2659 #
 2660 # The svr4 ABI emulator can be statically compiled into the kernel or loaded as
 2661 # a KLD module.  
 2662 # The STREAMS network emulation code can also be compiled statically or as a 
 2663 # module.  If loaded as a module, it must be loaded before the svr4 module
 2664 # (the /usr/sbin/svr4 script does this for you).  If compiling statically,
 2665 # the `streams' pseudo-device must be configured into any kernel which also
 2666 # specifies COMPAT_SVR4.  It is possible to have a statically-configured 
 2667 # STREAMS device and a dynamically loadable svr4 emulator;  the /usr/sbin/svr4
 2668 # script understands that it doesn't need to load the `streams' module under
 2669 # those circumstances.
 2670 # Caveat:  At this time, `options KTRACE' is required for the svr4 emulator
 2671 # (whether static or dynamic).  
 2672 # 
 2673 options         COMPAT_SVR4     # build emulator statically
 2674 options         DEBUG_SVR4      # enable verbose debugging
 2675 pseudo-device   streams         # STREAMS network driver (required for svr4).
 2676 
 2677 # The 'asr' driver provides support for current DPT/Adaptec SCSI RAID
 2678 # controllers (SmartRAID V and VI and later).
 2679 # These controllers require the CAM infrastructure.
 2680 #
 2681 device          asr
 2682 
 2683 # The 'dpt' driver provides support for DPT controllers (http://www.dpt.com/).
 2684 # These have hardware RAID-{0,1,5} support, and do multi-initiator I/O.
 2685 # The DPT controllers are commonly re-licensed under other brand-names -
 2686 # some controllers by Olivetti, Dec, HP, AT&T, SNI, AST, Alphatronic, NEC and
 2687 # Compaq are actually DPT controllers.
 2688 #
 2689 # See src/sys/dev/dpt for debugging and other subtle options.
 2690 #   DPT_MEASURE_PERFORMANCE Enables a set of (semi)invasive metrics. Various
 2691 #                           instruments are enabled.  The tools in
 2692 #                           /usr/sbin/dpt_* assume these to be enabled.
 2693 #   DPT_HANDLE_TIMEOUTS     Normally device timeouts are handled by the DPT.
 2694 #                           If you ant the driver to handle timeouts, enable
 2695 #                           this option.  If your system is very busy, this
 2696 #                           option will create more trouble than solve.
 2697 #   DPT_TIMEOUT_FACTOR      Used to compute the excessive amount of time to
 2698 #                           wait when timing out with the above option.
 2699 #  DPT_DEBUG_xxxx           These are controllable from sys/dev/dpt/dpt.h
 2700 #  DPT_LOST_IRQ             When enabled, will try, once per second, to catch
 2701 #                           any interrupt that got lost.  Seems to help in some
 2702 #                           DPT-firmware/Motherboard combinations.  Minimal
 2703 #                           cost, great benefit.
 2704 #  DPT_RESET_HBA            Make "reset" actually reset the controller
 2705 #                           instead of fudging it.  Only enable this if you
 2706 #                           are 100% certain you need it.
 2707 
 2708 device          dpt
 2709 
 2710 # DPT options
 2711 #!CAM# options  DPT_MEASURE_PERFORMANCE
 2712 #!CAM# options  DPT_HANDLE_TIMEOUTS
 2713 options         DPT_TIMEOUT_FACTOR=4
 2714 options         DPT_LOST_IRQ
 2715 options         DPT_RESET_HBA
 2716 options         DPT_ALLOW_MEMIO
 2717 
 2718 #
 2719 # Compaq "CISS" RAID controllers (SmartRAID 5* series)
 2720 # These controllers have a SCSI-like interface, and require the
 2721 # CAM infrastructure.
 2722 #
 2723 device          ciss
 2724 
 2725 #
 2726 # Intel Integrated RAID controllers.
 2727 # This driver was developed and is maintained by Intel.  Contacts
 2728 # at Intel for this driver are
 2729 # "Kannanthanam, Boji T" <boji.t.kannanthanam@intel.com> and
 2730 # "Leubner, Achim" <achim.leubner@intel.com>.
 2731 #
 2732 device          iir
 2733 
 2734 #
 2735 # Mylex AcceleRAID and eXtremeRAID controllers with v6 and later
 2736 # firmware.  These controllers have a SCSI-like interface, and require
 2737 # the CAM infrastructure.
 2738 #
 2739 device          mly
 2740 
 2741 # USB support
 2742 # UHCI controller
 2743 device          uhci
 2744 # OHCI controller
 2745 device          ohci
 2746 # General USB code (mandatory for USB)
 2747 device          usb
 2748 #
 2749 # Fm Radio
 2750 device          ufm
 2751 # Generic USB device driver
 2752 device          ugen
 2753 # Human Interface Device (anything with buttons and dials)
 2754 device          uhid
 2755 # USB keyboard
 2756 device          ukbd
 2757 # USB printer
 2758 device          ulpt
 2759 # USB Iomega Zip 100 Drive (Requires scbus and da)
 2760 device          umass
 2761 # USB modem support
 2762 device          umodem
 2763 # USB mouse
 2764 device          ums
 2765 # USB Rio (MP3 Player)
 2766 device          urio
 2767 # USB scanners
 2768 device          uscanner
 2769 # USB com devices
 2770 device          ucom
 2771 device          uplcom
 2772 device          uvscom
 2773 device          uvisor
 2774 device          uftdi
 2775 
 2776 #
 2777 # ADMtek USB ethernet. Supports the LinkSys USB100TX,
 2778 # the Billionton USB100, the Melco LU-ATX, the D-Link DSB-650TX
 2779 # and the SMC 2202USB. Also works with the ADMtek AN986 Pegasus
 2780 # eval board.
 2781 device          aue
 2782 #
 2783 # ASIX Electronics AX88172 USB 2.0 ethernet. Supports the LinkSys
 2784 # USB200M, the D-Link DUB-E100, the Melco LUAU2-KTX, the NetGear
 2785 # FA120, the SystemTalks SGC-X2UL, and the Sitecom LN029.
 2786 device          axe
 2787 #
 2788 # CATC USB-EL1201A USB ethernet. Supports the CATC Netmate
 2789 # and Netmate II, and the Belkin F5U111.
 2790 device          cue
 2791 #
 2792 # Kawasaki LSI ethernet. Supports the LinkSys USB10T,
 2793 # Entrega USB-NET-E45, Peracom Ethernet Adapter, the
 2794 # 3Com 3c19250, the ADS Technologies USB-10BT, the ATen UC10T,
 2795 # the Netgear EA101, the D-Link DSB-650, the SMC 2102USB
 2796 # and 2104USB, and the Corega USB-T.
 2797 device          kue
 2798 #
 2799 # RealTek RTL8150 USB to fast ethernet. Supports the Melco LUA-KTX
 2800 # and the GREEN HOUSE GH-USB100B.
 2801 device          rue
 2802 
 2803 # debugging options for the USB subsystem
 2804 #
 2805 options         USB_DEBUG
 2806 
 2807 # options for ukbd:
 2808 options         UKBD_DFLT_KEYMAP        # specify the built-in keymap
 2809 makeoptions     UKBD_DFLT_KEYMAP=it.iso
 2810 
 2811 # options for uplcom:
 2812 options         UPLCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2813                                                 # in milliseconds
 2814 
 2815 # options for uvscom:
 2816 options         UVSCOM_DEFAULT_OPKTSIZE=8       # default output packet size
 2817 options         UVSCOM_INTR_INTERVAL=100        # interrupt pipe interval
 2818                                                 # in milliseconds
 2819 
 2820 # FireWire support
 2821 device          firewire        # FireWire bus code
 2822 device          sbp             # SCSI over FireWire (Requires scbus and da)
 2823 device          sbp_targ        # SBP-2 Target mode  (Requires scbus and targ)
 2824 device          fwe             # Ethernet over FireWire (non-standard!)
 2825 
 2826 # dcons support (Dumb Console Device)
 2827 device          dcons                   # dumb console driver
 2828 device          dcons_crom              # FireWire attachment
 2829 options         DCONS_BUF_SIZE=16384    # buffer size
 2830 options         DCONS_POLL_HZ=100       # polling rate
 2831 options         DCONS_FORCE_CONSOLE=0   # force to be the primary console
 2832 options         DCONS_FORCE_GDB=1       # force to be the gdb device
 2833 
 2834 #####################################################################
 2835 # crypto subsystem
 2836 #
 2837 # This is a port of the openbsd crypto framework.  Include this when
 2838 # configuring IPsec and when you have a h/w crypto device to accelerate
 2839 # user applications that link to openssl.
 2840 #
 2841 # Drivers are ports from openbsd with some simple enhancements that have
 2842 # been fed back to openbsd (and hopefully will be included).
 2843 
 2844 pseudo-device   crypto          # core crypto support
 2845 pseudo-device   cryptodev       # /dev/crypto for access to h/w
 2846 
 2847 device          rndtest         # FIPS 140-2 entropy tester
 2848 
 2849 device          hifn            # Hifn 7951, 7781, etc.
 2850 options         HIFN_DEBUG      # enable debugging support: hw.hifn.debug
 2851 options         HIFN_RNDTEST    # enable rndtest support
 2852 
 2853 device          ubsec           # Broadcom 5501, 5601, 58xx
 2854 options         UBSEC_DEBUG     # enable debugging support: hw.ubsec.debug
 2855 options         UBSEC_RNDTEST   # enable rndtest support
 2856 
 2857 device          safe            # SafeNet 1141
 2858 options         SAFE_DEBUG      # enable debugging support: hw.safe.debug
 2859 options         SAFE_RNDTEST    # enable rndtest support
 2860 
 2861 # DRM options:
 2862 # mgadrm:    AGP Matrox G200, G400, G450, G550
 2863 # tdfxdrm:   3dfx Voodoo 3/4/5 and Banshee
 2864 # r128drm:   ATI Rage 128
 2865 # radeondrm: ATI Radeon up to 9000/9100
 2866 # DRM_DEBUG: include debug printfs, very slow
 2867 #
 2868 # mga requires AGP in the kernel, and it is recommended
 2869 # for AGP r128 and radeon cards.
 2870 
 2871 device          mgadrm
 2872 device          "r128drm"
 2873 device          radeondrm
 2874 device          tdfxdrm
 2875 
 2876 options         DRM_DEBUG
 2877 
 2878 #
 2879 # Embedded system options:
 2880 #
 2881 # An embedded system might want to run something other than init.
 2882 options         INIT_PATH="/sbin/init:/stand/sysinstall"
 2883 
 2884 # Debug options
 2885 options         BUS_DEBUG       # enable newbus debugging
 2886 options         DEBUG_VFS_LOCKS # enable vfs lock debugging
 2887 options         NPX_DEBUG       # enable npx debugging (FPU/math emu)
 2888 
 2889 # More undocumented options for linting.
 2890 # Note that documenting these are not considered an affront.
 2891 
 2892 options         AHC_DUMP_EEPROM
 2893 options         AHC_TMODE_ENABLE
 2894 options         CAM_DEBUG_DELAY
 2895 options         CLUSTERDEBUG
 2896 options         COMPAT_LINUX
 2897 options         CPU_UPGRADE_HW_CACHE
 2898 options         DEBUG
 2899 options         DEBUG_LINUX
 2900 #options        DISABLE_PSE
 2901 options         ENABLE_ALART
 2902 options         ENABLE_VFS_IOOPT
 2903 options         FB_DEBUG
 2904 options         FB_INSTALL_CDEV
 2905 options         FE_8BIT_SUPPORT
 2906 options         I4B_SMP_WORKAROUND
 2907 options         I586_PMC_GUPROF=0x70000
 2908 options         IBCS2
 2909 options         KBDIO_DEBUG=2
 2910 options         KBD_MAXRETRY=4
 2911 options         KBD_MAXWAIT=6
 2912 options         KBD_RESETDELAY=201
 2913 options         KEY
 2914 options         LOCKF_DEBUG
 2915 options         LOUTB
 2916 options         NETATALKDEBUG
 2917 #options        OLTR_NO_BULLSEYE_MAC
 2918 #options        OLTR_NO_HAWKEYE_MAC
 2919 #options        OLTR_NO_TMS_MAC
 2920 options         PNPBIOS
 2921 options         PSM_DEBUG=1
 2922 options         SCSI_NCR_DEBUG
 2923 options         SCSI_NCR_MAX_SYNC=10000
 2924 options         SCSI_NCR_MAX_WIDE=1
 2925 options         SCSI_NCR_MYADDR=7
 2926 options         SC_DEBUG_LEVEL
 2927 options         SC_RENDER_DEBUG
 2928 options         SHOW_BUSYBUFS   # List buffers that prevent root unmount
 2929 options         SIMPLELOCK_DEBUG
 2930 options         SI_DEBUG
 2931 options         SLIP_IFF_OPTS
 2932 options         SPX_HACK
 2933 options         TIMER_FREQ="((14318182+6)/12)"
 2934 options         VFS_BIO_DEBUG
 2935 options         XBONEHACK
 2936 

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