Commit 25966e89 authored by Lang Cheng's avatar Lang Cheng Committed by Jason Gunthorpe
Browse files

RDMA/hns: Let software PI/CI grow naturally 

The hardware can truncate PI/CI when posting or polling, the driver does
not need to do truncation. Therefore keep the software's PI/CI consistent
with it in the hardware.

Link: https://lore.kernel.org/r/1589982799-28728-2-git-send-email-liweihang@huawei.com


Signed-off-by: default avatarLang Cheng <chenglang@huawei.com>
Signed-off-by: default avatarWeihang Li <liweihang@huawei.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent a94dae86

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+4 −5
Original line number Diff line number Diff line
@@ -500,8 +500,7 @@ static inline void update_sq_db(struct hns_roce_dev *hr_dev, 
		roce_set_field(sq_db.byte_4, V2_DB_BYTE_4_CMD_M,

			       V2_DB_BYTE_4_CMD_S, HNS_ROCE_V2_SQ_DB);

		roce_set_field(sq_db.parameter, V2_DB_PARAMETER_IDX_M,

			       V2_DB_PARAMETER_IDX_S,

			       qp->sq.head & ((qp->sq.wqe_cnt << 1) - 1));

			       V2_DB_PARAMETER_IDX_S, qp->sq.head);

		roce_set_field(sq_db.parameter, V2_DB_PARAMETER_SL_M,

			       V2_DB_PARAMETER_SL_S, qp->sl);
@@ -807,7 +806,8 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq, 
		srq_db.byte_4 =

			cpu_to_le32(HNS_ROCE_V2_SRQ_DB << V2_DB_BYTE_4_CMD_S |

				    (srq->srqn & V2_DB_BYTE_4_TAG_M));

		srq_db.parameter = cpu_to_le32(srq->head);

		srq_db.parameter =

			cpu_to_le32(srq->head & V2_DB_PARAMETER_IDX_M);



		hns_roce_write64(hr_dev, (__le32 *)&srq_db, srq->db_reg_l);

	}
@@ -2940,8 +2940,7 @@ static int hns_roce_v2_req_notify_cq(struct ib_cq *ibcq, 
	roce_set_field(doorbell[0], V2_CQ_DB_BYTE_4_CMD_M, V2_DB_BYTE_4_CMD_S,

		       HNS_ROCE_V2_CQ_DB_NTR);

	roce_set_field(doorbell[1], V2_CQ_DB_PARAMETER_CONS_IDX_M,

		       V2_CQ_DB_PARAMETER_CONS_IDX_S,

		       hr_cq->cons_index & ((hr_cq->cq_depth << 1) - 1));

		       V2_CQ_DB_PARAMETER_CONS_IDX_S, hr_cq->cons_index);

	roce_set_field(doorbell[1], V2_CQ_DB_PARAMETER_CMD_SN_M,

		       V2_CQ_DB_PARAMETER_CMD_SN_S, hr_cq->arm_sn & 0x3);

	roce_set_bit(doorbell[1], V2_CQ_DB_PARAMETER_NOTIFY_S,

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