Intel IXP400 manual HSS Port Initialization Details, IxHssAccPortInit

13.3.7 Error Handling

The IxHssAcc component will use IxOsServices to report internal errors and warnings. Parameters passed through the IxHssAcc API interfaces will be error checked whenever possible.

HDLC CRC errors and byte alignment errors will be reported to packetized clients on a per packet basis. Port disable and disconnect errors on a transmit or receive packetized service pipe will be transmitted to the client as well.

HSS port errors such as over-run,under-run and frame synchronization will be counted by NPE A, along with other NPE software errors. This count of the total number of errors since configuration will be reported to packetized clients on a per packet basis and to channelized clients at the trigger rate.

IxHssAcc provides an interface to the client to read the last error from the NPE. There is no guarantee that the client will be able to read every error. A second error may occur before the client has had the opportunity to read the first one. The client will, however, have an accurate total error count.

Channelized services will use raw buffers.

Packetized services will use IXP_BUF.

Tx and Rx TDM slot assignments are identical.

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• All IXP_BUFs provided by the client to the packetized receive service will contain 2,048-byte data stores.

Packetized (HDLC) service is coupled with the HSS port.

Packets transmitted using the packetized service access interface will be sent through the HDLC coprocessor and on to the HSS coprocessor.

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Intel® IXP400 Software Access-Layer Components: HSS-Access (IxHssAcc) API

13.4HSS Port Initialization Details

ixHssAccPortInit()

The HSS ports must be configured to match the configuration of any connected PHY. No channelized or packetized connections should exist in the IxHssAcc layer while this interface is being called.

This includes configuring the time slots within a frame in one of the following ways:

•Configuring as HDLC — For packetized service, include raw packet mode

•Configuring as Voice64K/Voice56K — For channelized service

•Configuring as unassigned — For unused time slot

•Choosing the line speed, frame size, signal polarities, signal levels, clock edge, endianness, choice of input/output frame signal, and other parameters

This function takes the following arguments:

•IxHssAccHssPort hssPortId — The HSS port ID.

•IxHssAccConfigParams *configParams — A pointer to the HSS configuration structure.

Programmer’s Guide	IXP400 Software Version 2.0	April 2005
	Document Number: 252539, Revision: 007	197