SCO OpenServer

poll(D2osdi)

poll -- poll a device

Synopsis

See poll(D2oddi) for synopsis, arguments, return values, and context.

Usage

The poll(D2osdi) entry point routine can be used to synchronize the driver with the hardware. Alternatively, this functionality can be coded into the host adapater driver's intr(D2osdi) routine.

The poll( ) routine is called for every clock tick. If a scsi_io_req(D4osdi) command block has been passed to the _entry(D2osdi) routine, poll( ) calls the intr(D2osdi) routine on the next clock tick.

Version applicability

osdi: 1, 2, 3, 4, 5 SCSI host adapter drivers.

Differences between versions

References

poll(D2oddi)