RDMA/nes: Inform hardware that asynchronous event has been handled

When asynchronous events are processed by software, it is necessary
to let the hardware know that software has handled the event.  This
frees up the entry in the asynchronous event queue.
Signed-off-by: NDon Wood <donald.e.wood@intel.com>
Signed-off-by: NChien Tung <chien.tin.tung@intel.com>
Signed-off-by: NRoland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/nes/nes_hw.c

@@ -2269,6 +2269,8 @@ static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq)
 
 		if (++head >= aeq_size)
 			head = 0;
+
+		nes_write32(nesdev->regs + NES_AEQ_ALLOC, 1 << 16);
 	}
 	while (1);
 	aeq->aeq_head = head;

drivers/infiniband/hw/nes/nes_hw.h

@@ -61,6 +61,7 @@ enum pci_regs {
 	NES_CQ_ACK = 0x0034,
 	NES_WQE_ALLOC = 0x0040,
 	NES_CQE_ALLOC = 0x0044,
+	NES_AEQ_ALLOC = 0x0048
 };
 
 enum indexed_regs {