/* The layout of GREG_IMASK and GREG_IACK is identical to GREG_STAT.
* Bits set in GREG_IMASK will prevent that interrupt type from being
* signalled to the cpu. GREG_IACK can be used to clear specific top-level
/* The layout of GREG_IMASK and GREG_IACK is identical to GREG_STAT.
* Bits set in GREG_IMASK will prevent that interrupt type from being
* signalled to the cpu. GREG_IACK can be used to clear specific top-level