FreeBSD 4.0 manual page repository

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adw - Advansys PCI 16bit SCSI Host adapter driver

 

NAME

      adw - Advansys PCI 16bit SCSI Host adapter driver
 

SYNOPSIS

      controller pci
      controller adw
 
      For one or more SCSI busses:
      controller scbus0 at adw0
 

DESCRIPTION

      This driver provides access to the 16bit SCSI bus connected to the
      Advanced Systems Products, Inc.  ASC3550 Ultra, and ASC38C0800 Ultra2,
      SCSI Host Adapter chips.  AdvanSys products incorporating these chips
      include the ABP[3]940UW, ABP950UW, ABP970UW, ABP3940U2W, and ABP3950U2W.
      Both chips support, synchronous transfers (20MHz and 40MHz max
      respectively), 16bit transfers, tagged queueing, and up to 253 concurrent
      SCSI transactions.
 
      Per target configuration performed in the AdvanceWare menu, which is
      accessible at boot, is honored by this driver.  This includes syn‐
      chronous/asynchronous transfers, maximum synchronous negotiation rate,
      wide transfers, disconnection, tagged queueing, and the host adapter’s
      SCSI ID.  The global setting for the maximum number of tagged transac‐
      tions allowed per target is not honored as the CAM SCSI system will auto‐
      matically determine the maximum number of tags a device can receive as
      well as guarantee fair resource allocation among devices.
      adv(4), cd(4), da(4), sa(4), scsi(4)
 

AUTHORS

      The adw driver was ported by Justin T. Gibbs from the Linux driver writ‐
      ten by
      Bob Frey of Advanced System Products, Inc.  Many thanks to AdvanSys for
      providing the original driver under a suitable license for use in
      FreeBSD.
 

HISTORY

      The adw driver appeared in FreeBSD 3.0.
 

Sections

Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.
 

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