Devices                                                  ohci(7D)

NAME
     ohci - OpenHCI host controller driver

SYNOPSIS
     usb@unit-address

DESCRIPTION
     The ohci driver is  a USBA (Solaris  USB Architecture)  com-
     pliant  nexus  driver that supports the Open Host Controller
     Interface Specification 1.0a, an industry standard developed
     by Compaq,  Microsoft, and National Semiconductor.

     The ohci driver supports bulk, interrupt, control  and  iso-
     chronous  transfers.  It  supports  the nexus device control
     interface.

FILES
      /kernel/drv/ohci
           32 bit ELF kernel module

     /kernel/drv/sparcv9/ohci
           64 bit ELF kernel module

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Architecture                | PCI-based SPARC systems     |
    |_____________________________|_____________________________|
    | Availability                | SUNWusb, SUNWusbx           |
    |_____________________________|_____________________________|

SEE ALSO
     hid(7D),   hubd(7D),    uhci(7D),   scsa2usb(7D),   hid(7D),
     usba(7D)

     Writing Device Drivers

     Universal Serial Bus Specification 1.0 and 1.1

     Open Host Controller Interface Specification for USB 1.0a

     System Administration Guide: Basic Administration

DIAGNOSTICS
     All  host  controller  errors  are  passed   to  the  client
     drivers. Root errors are documented in  hubd(7D).

SunOS 5.8           Last change: 10 Oct 2000                    1

Devices                                                  ohci(7D)

     In addition to being logged, the   following  messages   may
     appear  on the system console. All messages are formatted in
     the following manner:

     WARNING: <device path> <ohci<instance number>>: Error message...

     Unrecoverable USB Hardware Error.

     There was an unrecoverable USB hardware  error  reported  by
     the  OHCI  Controller.   Please  reboot the system.  If this
     problem  persists,  contact your  system vendor.

     No SOF interrupts.

     The USB hardware error is  not  generating  Start  Of  Frame
     interrupts. Please reboot the system.  If this  problem per-
     sists,  contact your system vendor.

SunOS 5.8           Last change: 10 Oct 2000                    2