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man pages section 4: Device and Network Interfaces

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Updated: Thursday, June 13, 2019
 
 

ohci(4D)

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/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(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Architecture
SPARC, x86, PCI-based systems
Availability
system/io/usb

See Also

ehci(4D), hubd(4D), uhci(4D), usba(4D), attributes(7)

Writing Device Drivers in Oracle Solaris 11.4

Universal Serial Bus Specification 2.0

Open Host Controller Interface Specification for USB 1.0a

http://www.oracle.com

Diagnostics

All host controller errors are passed to the client drivers. Root hub errors are documented in hubd(4D).

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 unusable.

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

The following messages may be entered into the system log. They are formatted in the following manner:

<device path> <ohci<instance number>): Message...
Failed to program frame interval register.

For an unspecified reason, the frame interval register has been nulled out by the Uli M1575 chip. Please reboot the system. If this problem persists, contact your system vendor.