Provided by:
linux-doc-2.6.15_2.6.15-23.39_all 
NAME
ata_host_intr - Handle host interrupt for given (port, task)
SYNOPSIS
unsigned int ata_host_intr (struct ata_port * ap,
struct ata_queued_cmd * qc);
ARGUMENTS
ap Port on which interrupt arrived (possibly...)
qc Taskfile currently active in engine
DESCRIPTION
Handle host interrupt for given queued command. Currently, only DMA
interrupts are handled. All other commands are handled via polling with
interrupts disabled (nIEN bit).
LOCKING
spin_lock_irqsave(host_set lock)
RETURNS
One if interrupt was handled, zero if not (shared irq).
AUTHOR
Jeff Garzik.