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ohci(7D)			    Devices			      ohci(7D)

NAME
       ohci - OpenHCI host controller driver

SYNOPSIS
       usb@unit-address

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

       The ohci driver	supports  bulk,	 interrupt,  control  and  isochronous
       transfers.

FILES
       /kernel/drv/ohci

	   32-bit x86 ELF kernel module

       /kernel/drv/amd64/ohci

	   64-bit x86 ELF kernel module

       /kernel/drv/sparcv9/ohci

	   64-bit SPARC ELF kernel module

       /kernel/drv/ohci.conf

	   driver configuration file

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

       ┌─────────────────────────────┬───────────────────────────────┐
       │      ATTRIBUTE TYPE	     │	     ATTRIBUTE VALUE	     │
       ├─────────────────────────────┼───────────────────────────────┤
       │Architecture		     │SPARC, x86, PCI-based systems  │
       ├─────────────────────────────┼───────────────────────────────┤
       │Availability		     │SUNWusb			     │
       └─────────────────────────────┴───────────────────────────────┘

SEE ALSO
       attributes(5), ehci(7D), hubd(7D), uhci(7D), usba(7D)

       Writing Device Drivers

       Universal Serial Bus Specification 2.0

       Open Host Controller Interface Specification for USB 1.0a

       System Administration Guide: Basic Administration

       http://www.sun.com/io

DIAGNOSTICS
       All  host  controller errors are passed to the client drivers. Root hub
       errors are documented in hubd(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 have been received. This OHCI USB controller is unus‐
       able.

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

SunOS 5.10			  11 Oct 2004			      ohci(7D)

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