/* * Reads the Interrupt Status Register value from the NIC, thus deasserting * the interrupt line, and returns both the masked and unmasked mapped ISR * values. The value returned is mapped to abstract the hw-specific bit * locations in the Interrupt Status Register. * * (*masked) is cleared on initial call. * * Returns: A hardware-abstracted bitmap of all non-masked-out * interrupts pending, as well as an unmasked value */