bc093719ca
The last half year I've been working on a replacement TTY layer for the FreeBSD kernel. The new TTY layer was designed to improve the following: - Improved driver model: The old TTY layer has a driver model that is not abstract enough to make it friendly to use. A good example is the output path, where the device drivers directly access the output buffers. This means that an in-kernel PPP implementation must always convert network buffers into TTY buffers. If a PPP implementation would be built on top of the new TTY layer (still needs a hooks layer, though), it would allow the PPP implementation to directly hand the data to the TTY driver. - Improved hotplugging: With the old TTY layer, it isn't entirely safe to destroy TTY's from the system. This implementation has a two-step destructing design, where the driver first abandons the TTY. After all threads have left the TTY, the TTY layer calls a routine in the driver, which can be used to free resources (unit numbers, etc). The pts(4) driver also implements this feature, which means posix_openpt() will now return PTY's that are created on the fly. - Improved performance: One of the major improvements is the per-TTY mutex, which is expected to improve scalability when compared to the old Giant locking. Another change is the unbuffered copying to userspace, which is both used on TTY device nodes and PTY masters. Upgrading should be quite straightforward. Unlike previous versions, existing kernel configuration files do not need to be changed, except when they reference device drivers that are listed in UPDATING. Obtained from: //depot/projects/mpsafetty/... Approved by: philip (ex-mentor) Discussed: on the lists, at BSDCan, at the DevSummit Sponsored by: Snow B.V., the Netherlands dcons(4) fixed by: kan
286 lines
10 KiB
Plaintext
286 lines
10 KiB
Plaintext
#
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# GENERIC -- Generic kernel configuration file for FreeBSD/pc98
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#
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# For more information on this file, please read the handbook section on
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# Kernel Configuration Files:
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#
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# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
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#
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# The handbook is also available locally in /usr/share/doc/handbook
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# if you've installed the doc distribution, otherwise always see the
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# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
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# latest information.
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#
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# An exhaustive list of options and more detailed explanations of the
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# device lines is also present in the ../../conf/NOTES and NOTES files.
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# If you are in doubt as to the purpose or necessity of a line, check first
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# in NOTES.
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#
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# $FreeBSD$
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cpu I486_CPU
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cpu I586_CPU
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cpu I686_CPU
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ident GENERIC
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# To statically compile in device wiring instead of /boot/device.hints
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#hints "GENERIC.hints" # Default places to look for devices.
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makeoptions DEBUG=-g # Build kernel with gdb(1) debug symbols
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options SCHED_4BSD # 4BSD scheduler
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#options PREEMPTION # Enable kernel thread preemption
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options INET # InterNETworking
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options INET6 # IPv6 communications protocols
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options SCTP # Stream Control Transmission Protocol
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options FFS # Berkeley Fast Filesystem
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options SOFTUPDATES # Enable FFS soft updates support
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options UFS_ACL # Support for access control lists
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options UFS_DIRHASH # Improve performance on big directories
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options UFS_GJOURNAL # Enable gjournal-based UFS journaling
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options MD_ROOT # MD is a potential root device
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options NFSCLIENT # Network Filesystem Client
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options NFSSERVER # Network Filesystem Server
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options NFSLOCKD # Network Lock Manager
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options NFS_ROOT # NFS usable as /, requires NFSCLIENT
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options MSDOSFS # MSDOS Filesystem
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options CD9660 # ISO 9660 Filesystem
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options PROCFS # Process filesystem (requires PSEUDOFS)
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options PSEUDOFS # Pseudo-filesystem framework
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options GEOM_PART_GPT # GUID Partition Tables.
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options GEOM_LABEL # Provides labelization
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options COMPAT_43TTY # BSD 4.3 TTY compat [KEEP THIS!]
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options COMPAT_FREEBSD4 # Compatible with FreeBSD4
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options COMPAT_FREEBSD5 # Compatible with FreeBSD5
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options COMPAT_FREEBSD6 # Compatible with FreeBSD6
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options COMPAT_FREEBSD7 # Compatible with FreeBSD7
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options SCSI_DELAY=5000 # Delay (in ms) before probing SCSI
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options EPSON_BOUNCEDMA # use bounce buffer for 15-16M
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#options EPSON_MEMWIN # EPSON memory window support
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#options LINE30
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options KTRACE # ktrace(1) support
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options STACK # stack(9) support
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options SYSVSHM # SYSV-style shared memory
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options SYSVMSG # SYSV-style message queues
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options SYSVSEM # SYSV-style semaphores
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options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions
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options KBD_INSTALL_CDEV # install a CDEV entry in /dev
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options HWPMC_HOOKS # Necessary kernel hooks for hwpmc(4)
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options AUDIT # Security event auditing
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# Debugging for use in -current
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options KDB # Enable kernel debugger support.
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options DDB # Support DDB.
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options GDB # Support remote GDB.
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options INVARIANTS # Enable calls of extra sanity checking
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options INVARIANT_SUPPORT # Extra sanity checks of internal structures, required by INVARIANTS
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options WITNESS # Enable checks to detect deadlocks and cycles
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options WITNESS_SKIPSPIN # Don't run witness on spinlocks for speed
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# To make an SMP kernel, the next two lines are needed
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#options SMP # Symmetric MultiProcessor Kernel
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#device apic # I/O APIC
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# Bus support.
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device pci
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# Floppy drives
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device fdc
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# ATA and ATAPI devices
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device ata
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device atadisk # ATA disk drives
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device atapicd # ATAPI CDROM drives
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device atapifd # ATAPI floppy drives
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device atapist # ATAPI tape drives
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options ATA_STATIC_ID # Static device numbering
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# SCSI Controllers
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device adv # Advansys SCSI adapters
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device ahc # AHA2940 and onboard AIC7xxx devices
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device amd # AMD 53C974 (Tekram DC-390(T))
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device isp # Qlogic family
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#device ncr # NCR/Symbios Logic
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device sym # NCR/Symbios Logic (newer chipsets + those of `ncr')
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device aic # PC-9801-100
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device ct # host adapter using WD33C93[ABC] chip (C bus)
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device ncv # NCR 53C500
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device nsp # Workbit Ninja SCSI-3
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device stg # TMC 18C30/18C50
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# SCSI peripherals
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device scbus # SCSI bus (required for SCSI)
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device ch # SCSI media changers
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device da # Direct Access (disks)
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device sa # Sequential Access (tape etc)
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device cd # CD
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device pass # Passthrough device (direct SCSI access)
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device ses # SCSI Environmental Services (and SAF-TE)
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# keyboard driver
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device pckbd # PC98 keyboard
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device gdc # GDC screen
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device splash # Splash screen and screen saver support
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# syscons is the default console driver, resembling an SCO console
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device sc
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#device agp # support several AGP chipsets
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# Power management support (see NOTES for more options)
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#device apm
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#device pmc
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#device canbus
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#device canbepm
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# Add suspend/resume support for the i8254.
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#device pmtimer
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# Audio support
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#device sound # Generic sound driver
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#device snd_mss # Microsoft Sound System
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#device "snd_sb16" # Sound Blaster 16
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#device snd_sbc # Sound Blaster
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# PCCARD (PCMCIA) support
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# PCMCIA and cardbus bridge support
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device cbb # cardbus (yenta) bridge
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device pccard # PC Card (16-bit) bus
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device cardbus # CardBus (32-bit) bus
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# Serial (COM) ports
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options COM_MULTIPORT
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#options COM_ESP # ESP98
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#device sio # 8250, 16[45]50, 8251 based serial ports
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device mse
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#device joy
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# NEW Parallel port
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device ppc
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device ppbus # Parallel port bus (required)
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device lpt # Printer
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device plip # TCP/IP over parallel
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device ppi # Parallel port interface device
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#device vpo # Requires scbus and da
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# OLD Parallel port
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# Please stay olpt driver after ppc driver
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#device olpt
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# PCI Ethernet NICs.
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device de # DEC/Intel DC21x4x (``Tulip'')
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device em # Intel PRO/1000 adapter Gigabit Ethernet Card
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device le # AMD Am7900 LANCE and Am79C9xx PCnet
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device ti # Alteon Networks Tigon I/II gigabit Ethernet
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device txp # 3Com 3cR990 (``Typhoon'')
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device vx # 3Com 3c590, 3c595 (``Vortex'')
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# PCI Ethernet NICs that use the common MII bus controller code.
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# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
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device miibus # MII bus support
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device bfe # Broadcom BCM440x 10/100 Ethernet
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device bge # Broadcom BCM570xx Gigabit Ethernet
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device dc # DEC/Intel 21143 and various workalikes
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device fxp # Intel EtherExpress PRO/100B (82557, 82558)
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device lge # Level 1 LXT1001 gigabit Ethernet
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device nge # NatSemi DP83820 gigabit Ethernet
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device pcn # AMD Am79C97x PCI 10/100 (precedence over 'le')
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device re # RealTek 8139C+/8169/8169S/8110S
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device rl # RealTek 8129/8139
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device sf # Adaptec AIC-6915 (``Starfire'')
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device sis # Silicon Integrated Systems SiS 900/SiS 7016
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device sk # SysKonnect SK-984x & SK-982x gigabit Ethernet
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device ste # Sundance ST201 (D-Link DFE-550TX)
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device tl # Texas Instruments ThunderLAN
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device tx # SMC EtherPower II (83c170 ``EPIC'')
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device vge # VIA VT612x gigabit Ethernet
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device vr # VIA Rhine, Rhine II
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device wb # Winbond W89C840F
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device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
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# ISA Ethernet NICs. pccard NICs included.
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# 'device ed' requires 'device miibus'
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device ed # NE[12]000, SMC Ultra, 3c503, DS8390 cards
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device ep # Etherlink III based cards
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device fe # Fujitsu MB8696x based cards
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device sn # SMC's 9000 series of Ethernet chips
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device snc
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device xe # Xircom pccard Ethernet
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# Wireless NIC cards
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device wlan # 802.11 support
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options IEEE80211_DEBUG # enable debug msgs
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options IEEE80211_AMPDU_AGE # age frames in AMPDU reorder q's
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device wlan_wep # 802.11 WEP support
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device wlan_ccmp # 802.11 CCMP support
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device wlan_tkip # 802.11 TKIP support
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device wlan_amrr # AMRR transmit rate control algorithm
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device an # Aironet 4500/4800 802.11 wireless NICs.
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device ath # Atheros pci/cardbus NIC's
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device ath_hal # Atheros HAL (Hardware Access Layer)
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device ath_rate_sample # SampleRate tx rate control for ath
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device ral # Ralink Technology RT2500 wireless NICs.
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device wi # WaveLAN/Intersil/Symbol 802.11 wireless NICs.
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#device wl # Older non 802.11 Wavelan wireless NIC.
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# Pseudo devices.
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device loop # Network loopback
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device random # Entropy device
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device ether # Ethernet support
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device tun # Packet tunnel.
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device pty # BSD-style compatibility pseudo ttys
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device md # Memory "disks"
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device gif # IPv6 and IPv4 tunneling
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device faith # IPv6-to-IPv4 relaying (translation)
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device firmware # firmware assist module
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# The `bpf' device enables the Berkeley Packet Filter.
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# Be aware of the administrative consequences of enabling this!
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# Note that 'bpf' is required for DHCP.
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device bpf # Berkeley packet filter
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# USB support
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#device uhci # UHCI PCI->USB interface
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#device ohci # OHCI PCI->USB interface
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#device ehci # EHCI PCI->USB interface (USB 2.0)
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#device usb # USB Bus (required)
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#device udbp # USB Double Bulk Pipe devices
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#device ugen # Generic
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#device uhid # "Human Interface Devices"
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#device ukbd # Keyboard
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#device ulpt # Printer
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#device umass # Disks/Mass storage - Requires scbus and da
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#device ums # Mouse
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#device ural # Ralink Technology RT2500USB wireless NICs
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#device rum # Ralink Technology RT2501USB wireless NICs
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#device zyd # ZyDAS zb1211/zb1211b wireless NICs
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#device urio # Diamond Rio 500 MP3 player
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#device uscanner # Scanners
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# USB Serial devices
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#device ucom # Generic com ttys
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#device uark # Technologies ARK3116 based serial adapters
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#device ubsa # Belkin F5U103 and compatible serial adapters
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#device ubser # BWCT console serial adapters
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#device uftdi # For FTDI usb serial adapters
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#device uipaq # Some WinCE based devices
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#device uplcom # Prolific PL-2303 serial adapters
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#device uslcom # SI Labs CP2101/CP2102 serial adapters
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#device uvisor # Visor and Palm devices
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#device uvscom # USB serial support for DDI pocket's PHS
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# USB Ethernet, requires miibus
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#device aue # ADMtek USB Ethernet
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#device axe # ASIX Electronics USB Ethernet
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#device cdce # Generic USB over Ethernet
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#device cue # CATC USB Ethernet
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#device kue # Kawasaki LSI USB Ethernet
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#device rue # RealTek RTL8150 USB Ethernet
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#device udav # Davicom DM9601E USB
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# FireWire support
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#device firewire # FireWire bus code
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#device sbp # SCSI over FireWire (Requires scbus and da)
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#device fwe # Ethernet over FireWire (non-standard!)
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