RDMA/hns: Set the owner field of SQWQE in hip08 RoCE

the owner need to be set when posting sqwqe in hip08 RoCE.
The owner be used according to the below algorithm:
The value of owner should be 1 in the first lap, it
should be 0 in the second lap and in turn.

Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Shaobo Xu <xushaobo2@huawei.com>
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index c1f3325..7008fa3 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -62,6 +62,7 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
        struct hns_roce_v2_db sq_db;
        unsigned int sge_ind = 0;
        unsigned int wqe_sz = 0;
+       unsigned int owner_bit;
        unsigned long flags;
        unsigned int ind;
        void *wqe = NULL;
@@ -104,6 +105,7 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                qp->sq.wrid[(qp->sq.head + nreq) & (qp->sq.wqe_cnt - 1)] =
                                                                      wr->wr_id;
 
+               owner_bit = ~(qp->sq.head >> ilog2(qp->sq.wqe_cnt)) & 0x1;
                rc_sq_wqe = wqe;
                memset(rc_sq_wqe, 0, sizeof(*rc_sq_wqe));
                for (i = 0; i < wr->num_sge; i++)
@@ -120,6 +122,9 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
                roce_set_bit(rc_sq_wqe->byte_4, V2_RC_SEND_WQE_BYTE_4_CQE_S,
                            (wr->send_flags & IB_SEND_SIGNALED) ? 1 : 0);
 
+               roce_set_bit(rc_sq_wqe->byte_4, V2_RC_SEND_WQE_BYTE_4_OWNER_S,
+                            owner_bit);
+
                switch (wr->opcode) {
                case IB_WR_RDMA_READ:
                        roce_set_field(rc_sq_wqe->byte_4,