[ofa-general] [PATCH] RDMA/nes: Inform hardware that asynchronous event has been handled

[Chien Tung]

From: Don Wood <donald.e.wood at intel.com>

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: Don Wood <donald.e.wood at intel.com>
Signed-off-by: Chien Tung <chien.tin.tung at intel.com>
---
diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index 5d139db..d612aec 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/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;
diff --git a/drivers/infiniband/hw/nes/nes_hw.h b/drivers/infiniband/hw/nes/nes_hw.h
index bc0b4de..498d43e 100644
--- a/drivers/infiniband/hw/nes/nes_hw.h
+++ b/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 {
-- 
1.5.2.2