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Commit affcd505 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin Committed by Roland Dreier
Browse files

[IB] mthca: report asynchronous CQ events 



Implement reporting asynchronous CQ events in Mellanox HCA driver.

Signed-off-by: default avatarMichael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 89fbb69c

drivers/infiniband/hw/mthca/mthca_cq.c

+30 −1
Original line number Diff line number Diff line
@@ -208,7 +208,7 @@ static inline void update_cons_index(struct mthca_dev *dev, struct mthca_cq *cq, 
	}

}



void mthca_cq_event(struct mthca_dev *dev, u32 cqn)

void mthca_cq_completion(struct mthca_dev *dev, u32 cqn)

{

	struct mthca_cq *cq;
@@ -224,6 +224,35 @@ void mthca_cq_event(struct mthca_dev *dev, u32 cqn) 
	cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);

}



void mthca_cq_event(struct mthca_dev *dev, u32 cqn,

		    enum ib_event_type event_type)

{

	struct mthca_cq *cq;

	struct ib_event event;



	spin_lock(&dev->cq_table.lock);



	cq = mthca_array_get(&dev->cq_table.cq, cqn & (dev->limits.num_cqs - 1));



	if (cq)

		atomic_inc(&cq->refcount);

	spin_unlock(&dev->cq_table.lock);



	if (!cq) {

		mthca_warn(dev, "Async event for bogus CQ %08x\n", cqn);

		return;

	}



	event.device      = &dev->ib_dev;

	event.event       = event_type;

	event.element.cq  = &cq->ibcq;

	if (cq->ibcq.event_handler)

		cq->ibcq.event_handler(&event, cq->ibcq.cq_context);



	if (atomic_dec_and_test(&cq->refcount))

		wake_up(&cq->wait);

}



void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn,

		    struct mthca_srq *srq)

{

drivers/infiniband/hw/mthca/mthca_dev.h

+3 −1
Original line number Diff line number Diff line
@@ -460,7 +460,9 @@ int mthca_init_cq(struct mthca_dev *dev, int nent, 
		  struct mthca_cq *cq);

void mthca_free_cq(struct mthca_dev *dev,

		   struct mthca_cq *cq);

void mthca_cq_event(struct mthca_dev *dev, u32 cqn);

void mthca_cq_completion(struct mthca_dev *dev, u32 cqn);

void mthca_cq_event(struct mthca_dev *dev, u32 cqn,

		    enum ib_event_type event_type);

void mthca_cq_clean(struct mthca_dev *dev, u32 cqn, u32 qpn,

		    struct mthca_srq *srq);

drivers/infiniband/hw/mthca/mthca_eq.c

+3 −1
Original line number Diff line number Diff line
@@ -292,7 +292,7 @@ static int mthca_eq_int(struct mthca_dev *dev, struct mthca_eq *eq) 
		case MTHCA_EVENT_TYPE_COMP:

			disarm_cqn = be32_to_cpu(eqe->event.comp.cqn) & 0xffffff;

			disarm_cq(dev, eq->eqn, disarm_cqn);

			mthca_cq_event(dev, disarm_cqn);

			mthca_cq_completion(dev, disarm_cqn);

			break;



		case MTHCA_EVENT_TYPE_PATH_MIG:
@@ -364,6 +364,8 @@ static int mthca_eq_int(struct mthca_dev *dev, struct mthca_eq *eq) 
				   eqe->event.cq_err.syndrome == 1 ?

				   "overrun" : "access violation",

				   be32_to_cpu(eqe->event.cq_err.cqn) & 0xffffff);

			mthca_cq_event(dev, be32_to_cpu(eqe->event.cq_err.cqn),

				       IB_EVENT_CQ_ERR);

			break;



		case MTHCA_EVENT_TYPE_EQ_OVERFLOW: