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GENERIC32 revision 1.89
      1  1.89  augustss # 	$NetBSD: GENERIC32,v 1.89 2004/10/23 14:00:53 augustss Exp $
      2   1.1       eeh 
      3   1.1       eeh include "arch/sparc64/conf/std.sparc64"
      4   1.1       eeh 
      5  1.36    atatat options 	INCLUDE_CONFIG_FILE	# embed config file in kernel binary
      6  1.36    atatat 
      7  1.89  augustss #ident 		"GENERIC-$Revision: 1.89 $"
      8   1.1       eeh 
      9   1.8       eeh maxusers	64
     10   1.1       eeh 
     11   1.1       eeh ## System kernel configuration.  See options(4) for more detail.
     12   1.1       eeh 
     13   1.1       eeh 
     14   1.1       eeh # Options for variants of the Sun SPARC architecure.
     15   1.1       eeh # We currently support three architecture types; at least one is required.
     16  1.14       mrg options 	SUN4U		# sun4u - UltraSPARC
     17  1.26       mrg #options 	BLINK		# blink the system LED
     18   1.1       eeh 
     19   1.1       eeh ## System options specific to the sparc machine type
     20   1.1       eeh 
     21   1.1       eeh ## Use a faster console than the PROM's slow drawing routines.  Not needed
     22   1.1       eeh ## for headless (no framebuffer) machines.
     23   1.8       eeh # XXX borken on sparc64
     24   1.1       eeh #options 	RASTERCONSOLE		# fast rasterop console
     25   1.1       eeh #options 	FONT_GALLANT12x22	# the console font
     26   1.1       eeh #options 	FONT_BOLD8x16		# a somewhat smaller font
     27   1.1       eeh 
     28   1.1       eeh #### System options that are the same for all ports
     29   1.1       eeh 
     30   1.1       eeh ## Root device configuration: change the ?'s if you are going to use a
     31   1.1       eeh ## nonstandard root partition (other than where the kernel is booted from)
     32   1.1       eeh ## and/or nonstandard root type (not ffs or nfs).  Normally this can be
     33   1.1       eeh ## automagically determined at boot time.
     34   1.1       eeh 
     35   1.1       eeh config		netbsd	root on ? type ?
     36   1.1       eeh 
     37   1.1       eeh ## UVM options.
     38   1.1       eeh #options 	UVM_PAGE_TRKOWN
     39   1.1       eeh #options 	UVMHIST
     40   1.1       eeh #options 	UVMHIST_PRINT	# Loud!
     41   1.1       eeh 
     42   1.1       eeh ## System call tracing (see ktrace(1)).
     43   1.1       eeh options 	KTRACE
     44  1.50    provos options 	SYSTRACE		# system call vetting via systrace(1)
     45   1.1       eeh 
     46   1.1       eeh ## Collect statistics on kernel malloc's and free's.  This does have a
     47   1.1       eeh ## significant performance hit on slower machines, so it is intended for
     48   1.1       eeh ## diagnostic use only.
     49   1.1       eeh #options 	KMEMSTATS
     50   1.1       eeh 
     51   1.1       eeh ## System V compatible IPC subsystem.  (msgctl(2), semctl(2), and shmctl(2))
     52   1.1       eeh options 	SYSVMSG		# System V message queues
     53   1.1       eeh options 	SYSVSEM		# System V semaphores
     54   1.1       eeh options 	SYSVSHM		# System V shared memory
     55   1.1       eeh #options 	SHMMAXPGS=1024	# 1024 pages is the default
     56  1.74  christos options 	P1003_1B_SEMAPHORE	# p1003.1b semaphore support 
     57  1.74  christos 
     58   1.1       eeh 
     59   1.1       eeh ## Loadable kernel module support; still under development.
     60   1.1       eeh options 	LKM
     61  1.30  jdolecek 
     62  1.45     lukem options 	USERCONF	# userconf(4) support
     63  1.69  nakayama #options 	PIPE_SOCKETPAIR	# smaller, but slower pipe(2)
     64  1.85    atatat options 	SYSCTL_INCLUDE_DESCR	# Include sysctl descriptions in kernel
     65  1.54  junyoung 
     66  1.55       wiz # Enable experimental buffer queue strategy for better responsiveness under 
     67  1.54  junyoung # high disk I/O load. Use it with caution - it's not proven to be stable yet.
     68  1.54  junyoung #options 	NEW_BUFQ_STRATEGY
     69   1.1       eeh 
     70  1.48       chs ## NFS boot options; tries DHCP/BOOTP then BOOTPARAM
     71   1.1       eeh options 	NFS_BOOT_BOOTPARAM
     72   1.1       eeh #options 	NFS_BOOT_BOOTP
     73  1.48       chs options 	NFS_BOOT_DHCP
     74   1.1       eeh 
     75   1.1       eeh #### Debugging options
     76   1.1       eeh 
     77   1.1       eeh ## The DDB in-kernel debugger runs at panic (unless DDB_ONPANIC=0), or at
     78   1.1       eeh ## serial console break or keyboard reset, where the PROM would normally
     79   1.1       eeh ## intercept.  DDB_HISTORY_SIZE adds up/down arrow command history.
     80   1.1       eeh # we enable DDB in GENERIC for now.
     81   1.1       eeh options 	DDB			# kernel dynamic debugger
     82   1.1       eeh options 	DDB_HISTORY_SIZE=100	# enable history editing in DDB
     83   1.1       eeh #options 	DDB_ONPANIC		# see also sysctl(8): `ddb.onpanic'
     84   1.1       eeh 
     85   1.1       eeh ## You may also use gdb, on another computer connected to this machine over
     86  1.67    martin ## a serial port.
     87  1.67    martin # ttyb on an Ultra5 is aliased to: "/pci@1f,0/pci@1,1/ebus@1/se:b", which is
     88  1.67    martin # "/pci@1f,0/pci@1,1/ebus@1/se@14,400000", port b.
     89  1.68    martin # options 	KGDB			# support for kernel gdb
     90  1.69  nakayama # options 	KGDB_DEVNAME="\"sab\""	# driver name for the kgdb serial chip
     91  1.69  nakayama # options 	KGDB_DEVADDR=0x400000	# physical address of the chip
     92  1.69  nakayama # options 	KGDB_DEVPORT=1		# port b
     93  1.69  nakayama # options 	KGDB_DEVRATE=38400	# baud rate
     94   1.1       eeh 
     95   1.1       eeh 
     96   1.1       eeh ## Compile the kernel with debugging symbols (`netbsd.gdb' is the debug file),
     97   1.1       eeh ## such that gdb(1) can be used on a kernel coredump.
     98   1.1       eeh 
     99  1.25     lukem #makeoptions	DEBUG="-g"
    100   1.1       eeh 
    101   1.1       eeh 
    102   1.1       eeh ## Adds code to the kernel that does internal consistency checks, and will
    103   1.1       eeh ## cause the kernel to panic if corruption of internal data structures
    104   1.1       eeh ## is detected.
    105   1.1       eeh #options 	DIAGNOSTIC	# extra kernel sanity checking
    106   1.1       eeh 
    107   1.1       eeh ## Enable (possibly expensive) debugging code that may also display messages
    108   1.1       eeh ## on the system console
    109   1.6       eeh #options 	DEBUG
    110   1.1       eeh 
    111   1.1       eeh ## Make SCSI error messages more verbose when explaining their meanings.
    112   1.1       eeh options 	SCSIVERBOSE
    113   1.1       eeh options 	PCIVERBOSE
    114   1.1       eeh options 	MIIVERBOSE	# verbose PHY autoconfig messages
    115   1.1       eeh #options 	PCI_CONFIG_DUMP	# verbosely dump PCI config space
    116   1.1       eeh 
    117   1.1       eeh ## `INSECURE' turns off the kernel security level (securelevel = 0 always).
    118   1.1       eeh ## This allows writing to /dev/mem, loading kernel modules while multi-user,
    119   1.1       eeh ## and other insecurities good only for development work.  Do not use this
    120   1.1       eeh ## option on a production machine.
    121   1.1       eeh #options 	INSECURE
    122   1.1       eeh 
    123   1.1       eeh ## `FDSCRIPTS' allows non-readable but executable scripts by providing a
    124   1.1       eeh ## pre-opened opaque file to the script interpreter.  `SETUIDSCRIPTS',
    125   1.1       eeh ## which implies FDSCRIPTS, allows scripts to be set-user-id using the same
    126   1.1       eeh ## opaque file mechanism.  Perl calls this "secure setuid scripts."
    127   1.1       eeh 
    128   1.1       eeh #options 	FDSCRIPTS
    129   1.1       eeh #options 	SETUIDSCRIPTS
    130   1.1       eeh 
    131   1.1       eeh ## Options for compatibility with previous releases foreign system binaries.
    132   1.1       eeh ## In the cases of COMPAT_SUNOS and COMPAT_SVR4, you may need to set up
    133   1.1       eeh ## additional user-level utilities or system configuration files. See
    134   1.1       eeh ## compat_sunos(8) and compat_svr4(8).
    135   1.1       eeh 
    136   1.1       eeh options 	COMPAT_43	# 4.3BSD system interfaces
    137  1.12       eeh options 	COMPAT_09	# NetBSD 0.9 binary compatibility
    138   1.1       eeh options 	COMPAT_10	# NetBSD 1.0 binary compatibility
    139   1.1       eeh options 	COMPAT_11	# NetBSD 1.1 binary compatibility
    140   1.1       eeh options 	COMPAT_12	# NetBSD 1.2 binary compatibility
    141   1.1       eeh options 	COMPAT_13	# NetBSD 1.3 binary compatibility
    142   1.1       eeh options 	COMPAT_14	# NetBSD 1.4 binary compatibility
    143  1.67    martin options 	COMPAT_15	# NetBSD 1.5 binary compatibility
    144  1.67    martin options 	COMPAT_16	# NetBSD 1.6 binary compatibility
    145  1.80  christos options 	COMPAT_20	# NetBSD 2.0 binary compatibility
    146   1.1       eeh options 	COMPAT_SUNOS	# SunOS 4.x binary compatibility
    147   1.1       eeh options 	COMPAT_SVR4	# SunOS 5.x binary compatibility
    148  1.14       mrg #options 	COMPAT_SVR4_32	# SunOS 5.x 32-bit binary compatibility -- 64-bit only
    149   1.1       eeh #options 	COMPAT_NETBSD32	# NetBSD/sparc binary compatibility -- 64-bit only
    150   1.1       eeh options 	EXEC_AOUT	# execve(2) support for a.out binaries
    151   1.1       eeh options 	EXEC_ELF32	# Exec module for SunOS 5.x binaries.
    152   1.1       eeh #options 	SYSCALL_DEBUG
    153   1.1       eeh 
    154  1.16       abs #options 	TCP_COMPAT_42	# 4.2BSD TCP/IP bug compat. Not recommended.
    155  1.16       abs 
    156   1.1       eeh ## File systems.  You probably need at least one of FFS or NFS.
    157   1.1       eeh file-system	FFS		# Berkeley Fast Filesystem
    158   1.1       eeh file-system	NFS		# Sun NFS-compatible filesystem client
    159   1.1       eeh file-system	KERNFS		# kernel data-structure filesystem
    160   1.1       eeh file-system	NULLFS		# NULL layered filesystem
    161   1.1       eeh file-system 	OVERLAY		# overlay file system
    162   1.1       eeh file-system	MFS		# memory-based filesystem
    163   1.1       eeh file-system	FDESC		# user file descriptor filesystem
    164   1.1       eeh file-system	UMAPFS		# uid/gid remapping filesystem
    165   1.1       eeh file-system	LFS		# Log-based filesystem (still experimental)
    166   1.1       eeh file-system	PORTAL		# portal filesystem (still experimental)
    167   1.1       eeh file-system	PROCFS		# /proc
    168   1.1       eeh file-system	CD9660		# ISO 9660 + Rock Ridge file system
    169   1.1       eeh file-system	UNION		# union file system
    170   1.1       eeh file-system	MSDOSFS		# MS-DOS FAT filesystem(s).
    171   1.1       eeh 
    172   1.1       eeh ## File system options.
    173   1.1       eeh options 	NFSSERVER	# Sun NFS-compatible filesystem server
    174   1.1       eeh options 	QUOTA		# FFS quotas
    175   1.1       eeh #options 	FFS_EI		# FFS Endian Independent support
    176  1.25     lukem options 	SOFTDEP		# FFS soft updates support.
    177   1.1       eeh 
    178   1.1       eeh ## Network protocol support.  In most environments, INET is required.
    179   1.1       eeh options 	INET		# IP (Internet Protocol) v4
    180   1.1       eeh options 	INET6		# IPV6
    181   1.1       eeh #options 	IPSEC		# IP security
    182   1.1       eeh #options 	IPSEC_ESP	# IP security (encryption part; define w/IPSEC)
    183   1.1       eeh #options 	IPSEC_DEBUG	# debug for IP security
    184   1.1       eeh #options 	GATEWAY		# packet forwarding ("router switch")
    185   1.1       eeh options 	MROUTING	# packet forwarding of multicast packets
    186  1.88      manu options 	PIM		# Protocol Independent Multicast
    187   1.1       eeh #options 	DIRECTED_BROADCAST	# allow broadcasts through routers
    188   1.1       eeh options 	NS		# Xerox NS networking
    189   1.1       eeh #options 	NSIP		# Xerox NS tunneling over IP
    190   1.1       eeh options 	ISO,TPIP	# OSI networking
    191   1.6       eeh options 	EON		# OSI tunneling over IP
    192   1.1       eeh #options 	CCITT,LLC,HDLC	# X.25 packet switched protocol
    193   1.1       eeh options 	NETATALK	# AppleTalk (over Ethernet) protocol
    194   1.1       eeh options 	NTP		# Network Time Protocol in-kernel support
    195   1.1       eeh #options 	PPS_SYNC	# Add serial line synchronization for NTP
    196   1.1       eeh options 	PFIL_HOOKS	# Add pfil(9) hooks, intended for custom LKMs.
    197   1.1       eeh options 	IPFILTER_LOG	# Add ipmon(8) logging for ipfilter device
    198  1.47    martti #options 	IPFILTER_DEFAULT_BLOCK	# block all packets by default
    199   1.1       eeh options 	PPP_BSDCOMP	# Add BSD compression to ppp device
    200   1.1       eeh options 	PPP_DEFLATE	# Add deflate (libz) compression to ppp device
    201   1.1       eeh options 	PPP_FILTER	# Add active filters for ppp (via bpf)
    202  1.16       abs #options 	TCP_DEBUG	# Record last TCP_NDEBUG packets with SO_DEBUG
    203   1.1       eeh 
    204  1.84       abs #options 	ALTQ		# Manipulate network interfaces' output queues
    205  1.84       abs #options 	ALTQ_BLUE	# Stochastic Fair Blue
    206  1.84       abs #options 	ALTQ_CBQ	# Class-Based Queueing
    207  1.84       abs #options 	ALTQ_CDNR	# Diffserv Traffic Conditioner
    208  1.84       abs #options 	ALTQ_FIFOQ	# First-In First-Out Queue
    209  1.84       abs #options 	ALTQ_FLOWVALVE	# RED/flow-valve (red-penalty-box)
    210  1.84       abs #options 	ALTQ_HFSC	# Hierarchical Fair Service Curve
    211  1.84       abs #options 	ALTQ_LOCALQ	# Local queueing discipline
    212  1.84       abs #options 	ALTQ_PRIQ	# Priority Queueing
    213  1.84       abs #options 	ALTQ_RED	# Random Early Detection
    214  1.84       abs #options 	ALTQ_RIO	# RED with IN/OUT
    215  1.84       abs #options 	ALTQ_WFQ	# Weighted Fair Queueing
    216  1.84       abs 
    217   1.1       eeh 
    218   1.1       eeh #### Main bus and CPU .. all systems.
    219   1.1       eeh mainbus0 at root
    220   1.1       eeh cpu0	at mainbus0
    221   1.1       eeh 
    222   1.1       eeh #### Bus types found on SPARC systems.
    223   1.1       eeh 
    224   1.1       eeh sbus0	at mainbus0				# Ultra 1
    225   1.1       eeh #upa0	at mainbus0				# Ultra 1E, Ultra 2, Ex0000
    226  1.14       mrg psycho*	at mainbus0				# Darwin, Ultra5
    227  1.39   thorpej pci*	at psycho?
    228  1.39   thorpej pci*	at ppb?
    229  1.39   thorpej ppb*	at pci?					# `APB' support.
    230  1.39   thorpej ebus*	at pci?					# ebus devices
    231  1.18       eeh # XXX 'puc's aren't really bridges, but there's no better place for them here
    232  1.39   thorpej puc*	at pci? dev ? function ?		# PCI "universal" comm. cards
    233   1.1       eeh 
    234   1.1       eeh #### Standard system devices -- all required for a given architecture
    235   1.1       eeh 
    236   1.1       eeh ## PROM console driver -- if all else fails
    237   1.1       eeh pcons0	at mainbus0				# PROM console
    238   1.1       eeh 
    239   1.1       eeh ## Auxiliary system registers -- We use the OBP for power management
    240   1.1       eeh auxio*	at ebus?				# auxio registers
    241   1.1       eeh auxio*	at sbus? slot ? offset ?		# auxio registers
    242   1.1       eeh 
    243   1.1       eeh # We also need:
    244   1.1       eeh bpp*	at sbus? slot ? offset ?		# parallel port
    245   1.1       eeh lpt*	at ebus?				# parallel port
    246   1.1       eeh 
    247   1.1       eeh ## Mostek clock found on 4/300, sun4c, sun4m and sun4u systems.
    248   1.1       eeh ## The Mostek clock NVRAM is the "eeprom" on sun4/300 systems.
    249   1.1       eeh clock*	at sbus? slot ? offset ?
    250   1.1       eeh clock*	at ebus?
    251  1.38       eeh rtc*	at ebus?
    252   1.1       eeh 
    253   1.1       eeh ## Timer chip found on 4/300, sun4c, sun4m and (some) sun4u systems.
    254   1.1       eeh timer*	at mainbus0				# sun4c
    255   1.1       eeh 
    256   1.1       eeh #### Serial port configuration
    257   1.1       eeh 
    258   1.1       eeh ## Zilog 8530 serial chips.  Each has two-channels.
    259   1.1       eeh ## zs0 is ttya and ttyb.  zs1 is the keyboard and mouse.
    260   1.8       eeh zs*	at sbus? slot ? offset ?
    261   1.8       eeh zstty*	at zs? channel ?			# ttya
    262   1.8       eeh kbd0	at zstty?
    263   1.8       eeh ms0	at zstty?
    264   1.8       eeh 
    265   1.1       eeh ## PCI machines have serial ports:
    266   1.1       eeh ##	Siemens SAB82532 controller: ttya and ttyb (`su'; sab)
    267   1.1       eeh ##	Part of NS PC87332VLJ Super I/O controller: kbd/mouse (`se'; com)
    268   1.1       eeh 
    269  1.14       mrg ## The SAB82532 controller has two serial ports
    270  1.43    petrov sab*	at ebus?				# ttya/ttyb
    271  1.43    petrov sabtty*	at sab? channel ?
    272   1.1       eeh 
    273   1.9       mrg ## Part of a PC87332VLJ
    274   1.8       eeh com*	at ebus?				# `com' driver for `su'
    275   1.8       eeh kbd0	at com?					# keyboard
    276   1.8       eeh ms0	at com?					# mouse
    277   1.1       eeh 
    278  1.86       mrg ## Magma Serial/Parallel driver (not tested)
    279  1.86       mrg #magma*	at sbus? slot ? offset ?
    280  1.86       mrg #mtty*	at magma?
    281  1.86       mrg #mbpp*	at magma?
    282  1.86       mrg 
    283  1.86       mrg ## SUNW,spif Serial/Parallel driver (not tested)
    284  1.86       mrg #spif*  at sbus? slot ? offset ?
    285  1.86       mrg #stty*  at spif?
    286  1.86       mrg #sbpp*  at spif?
    287  1.86       mrg 
    288  1.86       mrg ## PCI serial interfaces
    289  1.18       eeh com*	at puc? port ?			# 16x50s on "universal" comm boards
    290  1.39   thorpej cy*	at pci? dev ? function ?	# Cyclades Cyclom-Y serial boards
    291  1.39   thorpej cz*	at pci? dev ? function ?	# Cyclades-Z multi-port serial boards
    292  1.18       eeh 
    293  1.86       mrg 
    294   1.1       eeh #### Disk controllers and disks
    295   1.1       eeh 
    296   1.1       eeh ## The following flags may be set for the NCR53c94 based esp driver:
    297   1.1       eeh ##	bits 0-7:  disable disconnect/reselect for the corresponding target
    298   1.1       eeh ##	bits 8-15: disable synchronous negotiation for target [bit-8]
    299   1.1       eeh 
    300   1.1       eeh ## sun4u on-board SCSI, and FSBE/S SBus SCSI cards, an NCR53c94 or
    301   1.1       eeh ## equivalent behind an LSI Logic DMA controller
    302   1.1       eeh 
    303  1.49    martin # XXX - the esp driver has problems with tagged queueing.
    304  1.49    martin # To avoid these, tagged queueing has been disabled for the first 8 targets
    305  1.49    martin # by setting those bits to 1 (starting at bit 16, see esp(4) for details).
    306  1.49    martin # If you want tagged queueing, and are sure it works for you, set the flags
    307  1.49    martin # value to 0. CAVEAT: using tagged queueing currently can cause data loss!
    308  1.49    martin 
    309   1.8       eeh dma*	at sbus? slot ? offset ?		# SBus
    310  1.49    martin esp*	at dma? flags 0x00ff0000		# SBus
    311   1.1       eeh 
    312  1.49    martin esp*	at sbus? slot ? offset ? flags 0x00ff0000
    313   1.1       eeh isp*	at sbus? slot ? offset ?
    314  1.42       mrg isp*	at pci? dev ? function ?	# Qlogic ISP [12]0x0 SCSI/FibreChannel
    315  1.70    bouyer siop*	at pci? 			# 53C8xx ("glm" compatible)
    316  1.70    bouyer esiop*	at pci? 			# 53C875 and newer ("glm" compatible)
    317   1.1       eeh 
    318  1.78  jonathan # PCI cryptographic devices
    319  1.78  jonathan hifn*	at pci? dev ? function ?	# Hifn 7755/7811/795x
    320  1.78  jonathan ubsec*	at pci? dev ? function ?	# Broadcom 5501/5601/580x/582x
    321  1.78  jonathan 
    322  1.23   tsutsui # PCI SCSI controllers
    323  1.23   tsutsui # 	UT marks untested.
    324  1.39   thorpej adv*	at pci? dev ? function ?	# AdvanSys 1200[A,B], 9xx[U,UA] SCSI UT
    325  1.39   thorpej adw*	at pci? dev ? function ?	# AdvanSys 9x0UW[D], 3940U[2,3]W SCSI UT
    326  1.61   tsutsui ahc*	at pci? dev ? function ?	# Adaptec [23]94x, aic78x0 SCSI
    327  1.39   thorpej bha*	at pci? dev ? function ?	# BusLogic 9xx SCSI UT
    328  1.39   thorpej dpt*	at pci? dev ? function ?	# DPT SmartCache/SmartRAID UT
    329  1.39   thorpej iha*	at pci? dev ? function ?	# Initio INIC-940/950 SCSI
    330  1.87     itohy njs*	at pci? dev ? function ?	# Workbit NinjaSCSI-32
    331  1.61   tsutsui pcscp*	at pci? dev ? function ?	# AMD 53c974 PCscsi-PCI SCSI
    332  1.39   thorpej trm*	at pci? dev ? function ?	# Tekram DC-395U/UW/F, DC-315/U SCSI
    333  1.18       eeh 
    334  1.18       eeh scsibus* at scsi?
    335  1.18       eeh 
    336   1.1       eeh ## These entries find devices on all SCSI busses and assign
    337   1.1       eeh ## unit numbers dynamically.
    338   1.1       eeh sd*	at scsibus? target ? lun ?		# SCSI disks
    339   1.1       eeh st*	at scsibus? target ? lun ?		# SCSI tapes
    340   1.1       eeh cd*	at scsibus? target ? lun ?		# SCSI CD-ROMs
    341   1.1       eeh ch*	at scsibus? target ? lun ?		# SCSI changer devices
    342   1.1       eeh ss*	at scsibus? target ? lun ?		# SCSI scanners
    343  1.13    mjacob ses*	at scsibus? target ? lun ?		# SCSI SES/SAF-TE devices
    344   1.1       eeh uk*	at scsibus? target ? lun ?		# unknown SCSI
    345   1.1       eeh 
    346  1.52     grant # IDE and related devices
    347  1.52     grant # PCI IDE controllers - see pciide(4) for supported hardware.
    348  1.52     grant # The 0x0001 flag force the driver to use DMA, even if the driver doesn't know
    349  1.52     grant # how to set up DMA modes for this chip. This may work, or may cause
    350  1.52     grant # a machine hang with some controllers.
    351  1.72    bouyer pciide* at pci? dev ? function ? flags 0x0000	# GENERIC pciide driver
    352  1.72    bouyer acardide* at pci? dev ? function ?	# Acard IDE controllers
    353  1.72    bouyer aceride* at pci? dev ? function ?	# Acer Lab IDE controllers
    354  1.77   thorpej artsata* at pci? dev ? function ?	# Intel i31244 SATA controller
    355  1.72    bouyer cmdide* at pci? dev ? function ?	# CMD tech IDE controllers
    356  1.72    bouyer cypide* at pci? dev ? function ?	# Cypress IDE controllers
    357  1.72    bouyer hptide* at pci? dev ? function ?	# Triones/HighPoint IDE controllers
    358  1.72    bouyer optiide* at pci? dev ? function ?	# Opti IDE controllers
    359  1.72    bouyer piixide* at pci? dev ? function ?	# Intel IDE controllers
    360  1.72    bouyer pdcide* at pci? dev ? function ?	# Promise IDE controllers
    361  1.76   thorpej satalink* at pci? dev ? function ?	# SiI SATALink controllers
    362  1.72    bouyer siside* at pci? dev ? function ?	# SiS IDE controllers
    363  1.72    bouyer slide*  at pci? dev ? function ?	# Symphony Labs IDE controllers
    364  1.72    bouyer viaide* at pci? dev ? function ?	# VIA/AMD/Nvidia IDE controllers
    365  1.73     lukem atabus* at ata?
    366  1.73     lukem atapibus* at atapi?
    367  1.21       eeh 
    368  1.52     grant # IDE drives
    369  1.52     grant # Flags are used only with controllers that support DMA operations
    370  1.52     grant # and mode settings (e.g. some pciide controllers)
    371  1.52     grant # The lowest order four bits (rightmost digit) of the flags define the PIO
    372  1.52     grant # mode to use, the next set of four bits the DMA mode and the third set the
    373  1.52     grant # UltraDMA mode. For each set of four bits, the 3 lower bits define the mode
    374  1.52     grant # to use, and the last bit must be 1 for this setting to be used.
    375  1.52     grant # For DMA and UDMA, 0xf (1111) means 'disable'.
    376  1.52     grant # 0x0fac means 'use PIO mode 4, DMA mode 2, disable UltraDMA'.
    377  1.52     grant # (0xc=1100, 0xa=1010, 0xf=1111)
    378  1.52     grant # 0x0000 means "use whatever the drive claims to support".
    379  1.52     grant 
    380  1.21       eeh ## Disable UDMA 4 which causes data corruption on the Acer Labs
    381  1.21       eeh ## chipset on Sun Blade 100 and Netra X1 machines.
    382  1.71    bouyer wd*     at atabus? drive ? flags 0x0000
    383   1.1       eeh 
    384   1.1       eeh cd*	at atapibus? drive ? flags 0x0000	# ATAPI CD-ROM drives
    385   1.1       eeh sd*	at atapibus? drive ? flags 0x0000	# ATAPI disk drives
    386   1.1       eeh uk*	at atapibus? drive ? flags 0x0000	# ATAPI unknown
    387   1.1       eeh 
    388  1.18       eeh # RAID controllers and devices (untested)
    389  1.39   thorpej cac*	at pci? dev ? function ?	# Compaq PCI array controllers
    390  1.39   thorpej mlx*	at pci? dev ? function ?	# Mylex DAC960 & DEC SWXCR family
    391  1.39   thorpej twe*	at pci? dev ? function ?	# 3ware Escalade RAID controllers
    392  1.18       eeh 
    393  1.18       eeh ld*	at cac? unit ?			# logical disk devices
    394  1.18       eeh ld*	at twe? unit ?
    395  1.18       eeh ld*	at mlx? unit ?
    396  1.18       eeh 
    397   1.1       eeh ## Floppy controller and drive found on SPARCstations.
    398   1.1       eeh 
    399   1.1       eeh # need share with the sparc, and everyone else.  needs to use auxio.
    400   1.1       eeh # actually, the ebus version has (will have) direct access to it's AUXIO
    401   1.1       eeh # register space (it is mapped in to fdthree not auxio).
    402   1.1       eeh #fdc0	at sbus? slot ? offset ?		# SUNW,fdtwo
    403   1.1       eeh #fdc0	at ebus?				# fdthree
    404   1.1       eeh #fd*	at fdc0 	 			# the drive itself
    405   1.1       eeh 
    406   1.1       eeh ## A disk-like interface to files.  Can be used to create floppy, CD,
    407   1.1       eeh ## miniroot images, etc.
    408   1.1       eeh 
    409   1.1       eeh pseudo-device	vnd	4
    410   1.1       eeh 
    411   1.1       eeh ## Concatenated and striped disks; with this, you can create a software-based
    412   1.1       eeh ## disk array similar to a "RAID 0" setup.  See ccd(4).
    413   1.1       eeh 
    414   1.1       eeh pseudo-device	ccd	4
    415  1.51     elric 
    416  1.51     elric ## Cryptographic disk devices.  See cgd(4).
    417  1.51     elric 
    418  1.51     elric #pseudo-device	cgd	4
    419   1.1       eeh 
    420   1.1       eeh ## RAIDframe disk driver: software RAID driver.  See raid(4).
    421   1.1       eeh 
    422  1.29     oster pseudo-device	raid	8
    423  1.29     oster options 	RAID_AUTOCONFIG		# auto-configuration of RAID components
    424  1.29     oster # Options to enable various other RAIDframe RAID types.
    425  1.69  nakayama # options 	RF_INCLUDE_EVENODD=1
    426  1.69  nakayama # options 	RF_INCLUDE_RAID5_RS=1
    427  1.69  nakayama # options 	RF_INCLUDE_PARITYLOGGING=1
    428  1.69  nakayama # options 	RF_INCLUDE_CHAINDECLUSTER=1
    429  1.69  nakayama # options 	RF_INCLUDE_INTERDECLUSTER=1
    430  1.29     oster # options 	RF_INCLUDE_PARITY_DECLUSTERING=1
    431  1.69  nakayama # options 	RF_INCLUDE_PARITY_DECLUSTERING_DS=1
    432  1.29     oster 
    433   1.1       eeh 
    434   1.1       eeh ## Memory disk device, used on boot floppies with compressed
    435   1.1       eeh ## kernel-plus-root-disk images.
    436   1.1       eeh 
    437   1.1       eeh pseudo-device	md	1
    438   1.1       eeh 
    439   1.1       eeh 
    440   1.1       eeh #### Network interfaces
    441   1.1       eeh 
    442   1.1       eeh ## LANCE Ethernet - an AMD 7990 LANCE behind specialized DMA glue
    443   1.1       eeh ## Three flavors of additional SBus ethernets are available.  One attaches
    444   1.1       eeh ## directly like the sun4c on-board, one uses the ledma device like the
    445   1.1       eeh ## sun4m on-board, and one uses the lebuffer device.
    446   1.1       eeh 
    447   1.8       eeh ledma0		at sbus? slot ? offset ?	# sun4m on-board
    448   1.8       eeh le0		at ledma0			# sun4m on-board
    449   1.8       eeh le*		at sbus? slot ? offset ?	# SBus
    450   1.8       eeh ledma*		at sbus? slot ? offset ?	# SBus
    451   1.8       eeh le*		at ledma?			# SBus
    452   1.8       eeh lebuffer0	at sbus? slot ? offset ?	# SBus
    453   1.8       eeh le0		at lebuffer?			# SBus
    454   1.8       eeh lebuffer*	at sbus? slot ? offset ?	# SBus
    455   1.8       eeh le*		at lebuffer?			# SBus
    456   1.1       eeh 
    457   1.1       eeh ## Happy Meal Ethernet
    458   1.1       eeh hme*		at sbus? slot ? offset ?
    459  1.39   thorpej hme*		at pci?	dev ? function ?	# network "hme" compatible
    460  1.17      matt 
    461  1.18       eeh ## qec/be, qec/hme
    462  1.18       eeh qec*		at sbus? slot ? offset ?
    463  1.18       eeh be*		at qec?
    464  1.18       eeh qe*		at qec?
    465  1.18       eeh 
    466  1.18       eeh # PCI network interfaces
    467  1.18       eeh # 	UT marks untested.
    468  1.39   thorpej an*	at pci? dev ? function ?	# Aironet PC4500/PC4800 (802.11) UT
    469  1.39   thorpej en*	at pci? dev ? function ?	# ENI/Adaptec ATM UT
    470  1.18       eeh # XXX causes ICE
    471  1.39   thorpej #ep*	at pci? dev ? function ?	# 3Com 3c59x
    472  1.61   tsutsui ex*	at pci? dev ? function ?	# 3Com 90x[B]
    473  1.61   tsutsui epic*	at pci? dev ? function ?	# SMC EPIC/100 Ethernet
    474  1.39   thorpej esh*	at pci? dev ? function ?	# Essential HIPPI card UT
    475  1.39   thorpej fpa*	at pci? dev ? function ?	# DEC DEFPA FDDI UT
    476  1.53     grant fxp*	at pci? dev ? function ?	# Intel EtherExpress PRO 10+/100B
    477  1.39   thorpej gem*	at pci? dev ? function ?	# Apple GMAC and Sun ERI gigabit enet
    478  1.62   tsutsui # XXX lacks bus_dmamap_sync()
    479  1.62   tsutsui #le*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    480  1.18       eeh # XXX uses vtophys()
    481  1.39   thorpej #lmc*	at pci? dev ? function ?	# Lan Media Corp SSI/HSSI/DS3
    482  1.39   thorpej ne*	at pci? dev ? function ?	# NE2000-compatible Ethernet UT
    483  1.39   thorpej ntwoc*	at pci? dev ? function ?	# Riscom/N2 PCI Sync Serial UT
    484  1.61   tsutsui # XXX cause uncorrectable DMA error
    485  1.61   tsutsui #pcn*	at pci? dev ? function ?	# PCnet-PCI Ethernet
    486  1.53     grant rtk*	at pci? dev ? function ?	# Realtek 8129/8139
    487  1.61   tsutsui # XXX cause uncorrectable DMA error
    488  1.61   tsutsui #sip*	at pci? dev ? function ?	# SiS 900 Ethernet
    489  1.39   thorpej ti*	at pci? dev ? function ?	# Alteon ACEnic gigabit Ethernet UT
    490  1.39   thorpej tl*	at pci? dev ? function ?	# ThunderLAN-based Ethernet
    491  1.39   thorpej tlp*	at pci? dev ? function ?	# DECchip 21x4x and clones
    492  1.39   thorpej vr*	at pci? dev ? function ?	# VIA Rhine Fast Ethernet
    493  1.56     grant wi*	at pci? dev ? function ?	# Lucent/Intersil WaveLAN/IEEE
    494   1.1       eeh 
    495   1.1       eeh # MII/PHY support
    496   1.1       eeh # XXX: only nsphy "tested"
    497  1.18       eeh dmphy*	at mii? phy ?			# Davicom DM9101 PHYs
    498  1.18       eeh exphy*	at mii? phy ?			# 3Com internal PHYs
    499  1.32       wiz icsphy*	at mii? phy ?			# Integrated Circuit Systems ICS189x
    500  1.18       eeh inphy*	at mii? phy ?			# Intel 82555 PHYs
    501  1.18       eeh iophy*	at mii? phy ?			# Intel 82553 PHYs
    502  1.18       eeh lxtphy*	at mii? phy ?			# Level One LXT-970 PHYs
    503  1.18       eeh nsphy*	at mii? phy ?			# NS83840 PHYs
    504  1.18       eeh nsphyter* at mii? phy ?			# NS83843 PHYs
    505  1.18       eeh qsphy*	at mii? phy ?			# Quality Semiconductor QS6612 PHYs
    506  1.18       eeh sqphy*	at mii? phy ?			# Seeq 80220/80221/80223 PHYs
    507  1.18       eeh tlphy*	at mii? phy ?			# ThunderLAN PHYs
    508  1.18       eeh tqphy*	at mii? phy ?			# TDK Semiconductor PHYs
    509  1.18       eeh ukphy*	at mii? phy ?			# generic unknown PHYs
    510  1.18       eeh 
    511  1.18       eeh # PCI USB controllers
    512  1.66  nakayama ehci*	at pci? dev ? function ?	# Enhanced Host Controller
    513  1.66  nakayama ohci*	at pci? dev ? function ?	# Open Host Controller
    514  1.66  nakayama 
    515  1.66  nakayama usb*	at ehci?			# USB bus support
    516  1.66  nakayama usb*	at ohci?
    517  1.18       eeh 
    518  1.20       eeh uhub*	at usb?						# USB Hubs
    519  1.20       eeh uhub*	at uhub? port ? configuration ? interface ?
    520  1.18       eeh 
    521  1.28  augustss uhidev*	at uhub? port ? configuration ? interface ?	# USB HID
    522  1.28  augustss uhid*	at uhidev? reportid ?				# USB Generic HID
    523  1.28  augustss 
    524  1.20       eeh ulpt*	at uhub? port ? configuration ? interface ?	# USB Printer
    525  1.18       eeh 
    526  1.20       eeh umodem*	at uhub? port ? configuration ?			# USB Modem
    527  1.20       eeh ucom*	at umodem?
    528  1.18       eeh 
    529  1.20       eeh umass*	at uhub? port ? configuration ? interface ?	# USB Mass Storage
    530  1.18       eeh 
    531  1.20       eeh uaudio*	at uhub? port ? configuration ?			# USB audio
    532  1.18       eeh 
    533  1.18       eeh # USB Ethernet adapters
    534  1.20       eeh aue*	at uhub? port ?		# ADMtek AN986 Pegasus based adapters
    535  1.89  augustss axe*	at uhub? port ?		# ASIX AX88172 based adapters
    536  1.20       eeh cue*	at uhub? port ?		# CATC USB-EL1201A based adapters
    537  1.20       eeh kue*	at uhub? port ?		# Kawasaki LSI KL5KUSB101B based adapters
    538  1.57  augustss url*	at uhub? port ?		# Realtek RTL8150L based adapters
    539  1.20       eeh 
    540  1.20       eeh uscanner* at uhub? port ?				# USB scanners
    541  1.53     grant uyap*	at uhub? port ?					# Y@P firmware loader
    542  1.20       eeh ugen*	at uhub? port ? configuration ? interface ?	# USB Generic driver
    543  1.20       eeh 
    544  1.20       eeh # PCI IEEE1394 controllers
    545  1.39   thorpej fwohci*	at pci? dev ? function ?	# IEEE1394 Open Host Controller
    546  1.39   thorpej #fwlynx* at pci? dev ? function ?	# IEEE1394 TI Lynx Controller
    547  1.25     lukem fw*	at fwbus?			# IP over 1394
    548  1.20       eeh 
    549  1.20       eeh # IEEE1394 nodes
    550  1.66  nakayama #fwnode* at fwbus? idhi ? idlo ?
    551  1.66  nakayama #sbpscsi* at fwnode?
    552   1.1       eeh 
    553   1.1       eeh ## Loopback network interface; required
    554   1.1       eeh pseudo-device	loop
    555   1.1       eeh 
    556   1.1       eeh ## SLIP and CSLIP interfaces, for IP over a serial line.
    557   1.1       eeh pseudo-device	sl		2
    558   1.1       eeh 
    559   1.1       eeh ## PPP, the successor to SLIP.  See pppd(8).
    560   1.1       eeh pseudo-device	ppp		2
    561  1.27    martin 
    562  1.27    martin ## PPP over Ethernet (RFC 2516)
    563  1.27    martin pseudo-device	pppoe
    564   1.1       eeh 
    565   1.1       eeh ## Starmode Radio IP, a special hardware network device.
    566   1.1       eeh pseudo-device	strip		1
    567   1.1       eeh 
    568   1.1       eeh ## Network "tunnel" device, allowing protocol stacks to run in the userland.
    569   1.1       eeh ## This is used by the third-party user-mode "ppp" program, and others.
    570   1.1       eeh pseudo-device	tun		4
    571   1.1       eeh 
    572   1.1       eeh ## Generic L3 over IP tunnel
    573   1.1       eeh #pseudo-device	gre		2	# generic L3 over IP tunnel
    574   1.1       eeh 
    575   1.1       eeh ## Berkeley Packet Filter, required to run RARPD.  A generic C-language
    576   1.1       eeh ## interface that allows selective examining of incoming packets.
    577   1.1       eeh pseudo-device	bpfilter	8
    578  1.58       seb 
    579  1.58       seb ## IEEE 802.1q encapsulation
    580  1.58       seb pseudo-device	vlan
    581  1.19    atatat 
    582  1.19    atatat ## Simple inter-network traffic bridging
    583  1.19    atatat pseudo-device	bridge
    584  1.69  nakayama #options 	BRIDGE_IPF		# bridge uses IP/IPv6 pfil hooks too
    585   1.1       eeh 
    586   1.1       eeh ## IP Filter, used in firewall and NAT applications.  See ipnat(8) for
    587   1.1       eeh ## one example of the use of the IP Filter.
    588   1.1       eeh pseudo-device	ipfilter
    589   1.1       eeh 
    590   1.1       eeh ## for IPv6
    591   1.1       eeh pseudo-device	gif		4	# IPv[46] over IPv[46] tunnel (RFC1933)
    592   1.1       eeh #pseudo-device	faith		1	# IPv[46] tcp relay translation i/f
    593   1.1       eeh #pseudo-device	stf		1	# 6to4 IPv6 over IPv4 encapsulation
    594  1.60  nakayama 
    595  1.60  nakayama 
    596  1.60  nakayama #### CardBus and PCMCIA devices
    597  1.60  nakayama 
    598  1.60  nakayama # PCI CardBus bridge support
    599  1.60  nakayama #cbb*	at pci? dev ? function ?
    600  1.60  nakayama #cardslot* at cbb?
    601  1.60  nakayama 
    602  1.60  nakayama # CardBus bus support
    603  1.60  nakayama #cardbus* at cardslot?
    604  1.60  nakayama #pcmcia* at cardslot?
    605  1.60  nakayama 
    606  1.60  nakayama ## CardBus cards; UT marks untested.
    607  1.60  nakayama 
    608  1.60  nakayama # CardBus serial interfaces
    609  1.60  nakayama #com*	at cardbus? dev ? function ?	# Modems and serial cards UT
    610  1.60  nakayama 
    611  1.60  nakayama # CardBus SCSI controllers
    612  1.60  nakayama #adv*	at cardbus? dev ? function ?	# AdvanSys 1200[A,B], 9xx[U,UA] SCSI UT
    613  1.60  nakayama #ahc*	at cardbus? dev ? function ?	# Adaptec ADP-1480 UT
    614  1.87     itohy #njs*	at cardbus? dev ? function ?	# Workbit NinjaSCSI-32
    615  1.60  nakayama 
    616  1.60  nakayama # CardBus network interfaces
    617  1.60  nakayama #ex*	at cardbus? dev ? function ?	# 3Com 3C575TX UT
    618  1.60  nakayama #fxp*	at cardbus? dev ? function ?	# Intel i8255x UT
    619  1.60  nakayama #rtk*	at cardbus? dev ? function ?	# Realtek 8129/8139 UT
    620  1.60  nakayama #tlp*	at cardbus? dev ? function ?	# DECchip 21143 UT
    621  1.60  nakayama 
    622  1.60  nakayama # CardBus USB controllers
    623  1.60  nakayama #ehci*	at cardbus? dev ? function ?	# Enhanced Host Controller
    624  1.60  nakayama #ohci*	at cardbus? dev ? function ?	# Open Host Controller
    625  1.60  nakayama 
    626  1.60  nakayama # CardBus IEEE1394 controllers
    627  1.60  nakayama #fwohci* at cardbus? dev ? function ?	# IEEE1394 Open Host Controller UT
    628  1.60  nakayama 
    629  1.60  nakayama ## PCMCIA cards; UT marks untested.
    630  1.60  nakayama 
    631  1.60  nakayama # PCMCIA serial interfaces
    632  1.60  nakayama #com*	at pcmcia? function ?		# Modems and serial cards
    633  1.60  nakayama 
    634  1.60  nakayama #pcmcom* at pcmcia? function ?		# PCMCIA multi-port serial cards UT
    635  1.60  nakayama #com*	at pcmcom? slave ?		# ...and the slave devices
    636  1.60  nakayama 
    637  1.60  nakayama # PCMCIA SCSI controllers
    638  1.60  nakayama #aic*	at pcmcia? function ?		# Adaptec APA-1460 SCSI UT
    639  1.60  nakayama #esp*	at pcmcia? function ?		# Qlogic ESP406/FAS408 SCSI UT
    640  1.60  nakayama 
    641  1.60  nakayama # PCMCIA IDE controllers
    642  1.60  nakayama #wdc*	at pcmcia? function ?
    643  1.60  nakayama 
    644  1.60  nakayama # PCMCIA network interfaces
    645  1.60  nakayama #an*	at pcmcia? function ?		# Aironet PC4500/PC4800 (802.11) UT
    646  1.60  nakayama #awi*	at pcmcia? function ?		# BayStack 650/660 (802.11FH/DS) UT
    647  1.60  nakayama #cnw*	at pcmcia? function ?		# Xircom/Netwave AirSurfer UT
    648  1.60  nakayama #ep*	at pcmcia? function ?		# 3Com 3c589 and 3c562 Ethernet
    649  1.60  nakayama #mbe*	at pcmcia? function ?		# MB8696x based Ethernet UT
    650  1.60  nakayama #ne*	at pcmcia? function ?		# NE2000-compatible Ethernet
    651  1.60  nakayama #ray*	at pcmcia? function ?		# Raytheon Raylink (802.11) UT
    652  1.60  nakayama #sm*	at pcmcia? function ?		# Megahertz Ethernet UT
    653  1.60  nakayama # tr at pcmcia has problems with Cardbus bridges
    654  1.60  nakayama #tr*	at pcmcia? function ?		# TROPIC based Token-Ring UT
    655  1.60  nakayama #wi*	at pcmcia? function ?		# Lucent/Intersil WaveLan IEEE (802.11)
    656  1.60  nakayama #xi*	at pcmcia? function ?		# Xircom CreditCard Ethernet UT
    657  1.60  nakayama 
    658  1.60  nakayama #mhzc*	at pcmcia? function ?		# Megahertz Ethernet/Modem combo cards
    659  1.60  nakayama #com*	at mhzc?
    660  1.60  nakayama #sm*	at mhzc?
    661   1.1       eeh 
    662   1.1       eeh 
    663   1.1       eeh #### Audio and video devices
    664   1.1       eeh 
    665   1.1       eeh ## /dev/audio support (`audiocs' plus `audio')
    666   1.1       eeh ##
    667   1.8       eeh audiocs*	at sbus? slot ? offset ?	# SUNW,CS4231
    668  1.40    martin audiocs*	at ebus?			# SUNW,CS4231 in U5/U10
    669  1.39   thorpej autri*		at pci? dev ? function ?	# Blade 100 'sound'
    670  1.31       eeh 
    671  1.65  nakayama audio*		at audiobus?
    672  1.38       eeh 
    673  1.65  nakayama #midi*		at midibus?
    674   1.1       eeh 
    675   1.1       eeh 
    676   1.1       eeh ## Sun "bwtwo" black and white framebuffer, found on sun4, sun4c, and sun4m
    677   1.1       eeh ## systems.  If your sun4 system has a cgfour installed in the P4 slot,
    678   1.1       eeh ## the P4 entries for "bwtwo" will attach to the overlay plane of the
    679   1.1       eeh ## "cgfour".
    680   1.1       eeh 
    681   1.8       eeh #bwtwo0		at sbus? slot ? offset ?	# sun4c and sun4m
    682   1.8       eeh #bwtwo*		at sbus? slot ? offset ?
    683   1.1       eeh 
    684   1.1       eeh ## Sun "cgthree" Sbus color framebuffer
    685   1.1       eeh #cgthree0	at sbus? slot ? offset ?
    686   1.1       eeh #cgthree*	at sbus? slot ? offset ?
    687   1.1       eeh 
    688   1.1       eeh ## Sun "cgsix" accelerated color framebuffer.
    689   1.1       eeh cgsix0		at sbus? slot ? offset ?
    690   1.1       eeh cgsix*		at sbus? slot ? offset ?
    691   1.1       eeh 
    692   1.1       eeh ## Sun FFB not supported
    693  1.79    petrov #ffb*		at mainbus0
    694  1.79    petrov #wsdisplay*	at ffb?
    695   1.1       eeh 
    696   1.1       eeh #### Other device configuration
    697   1.1       eeh 
    698  1.78  jonathan ### Other pseudo-devices
    699  1.78  jonathan 
    700  1.78  jonathan pseudo-device 	crypto			# opencrypto framework
    701  1.78  jonathan 
    702   1.1       eeh ## Pseudo ttys, required for network logins and programs like screen.
    703   1.1       eeh 
    704   1.7  jdolecek pseudo-device	pty			# pseudo-ttys (for network, etc.)
    705   1.1       eeh 
    706   1.1       eeh ## Random device, used to implement /dev/random (a source of random noise),
    707   1.1       eeh ## and generate randomness for some kernel formulae.
    708   1.1       eeh 
    709   1.1       eeh pseudo-device	rnd
    710  1.41     lukem 
    711  1.41     lukem pseudo-device	clockctl		# user control of clock subsystem
    712  1.64     ragge pseudo-device	ksyms			# /dev/ksyms
    713  1.83    itojun #pseudo-device	pf			# PF packet filter
    714  1.83    itojun #pseudo-device	pflog			# PF log if
    715