SYNOPSIS
struct irb {
union scsw scsw;
union esw;
__u8 ecw[32];
};
MEMBERS
scsw
- subchannel status word
esw
- extened status word
ecw[32]
- extended control word
DESCRIPTION
The irb that is handed to the device driver when an interrupt occurs. For solicited interrupts, the common I/O layer already performs checks whether a field is valid; a field not being valid is always passed as 0. If a unit check occurred, ecw may contain sense data; this is retrieved by the common I/O layer itself if the device doesn't support concurrent sense (so that the device driver never needs to perform basic sene itself). For unsolicited interrupts, the irb is passed as-is (expect for sense data, if applicable).
COPYRIGHT