On Fri, Sep 25, 2020 at 04:23:34PM +0800, Weihang Li wrote:
> From: Lang Cheng <chenglang@xxxxxxxxxx>
>
> The doorbell needs to store PI information into QPC, so the RoCEE should
> wait for the results of storing, that is, it needs two bus operations to
> complete a doorbell. When ROCEE is in SDI mode, multiple doorbells may be
> interlocked because the RoCEE can only handle bus operations serially. So a
> flag to mark if HIP09 is working in SDI mode is added. When the SDI flag is
> set, the ROCEE will ignore the PI information of the doorbell, continue to
> fetch wqe and verify its validity by it's owner_bit.
>
> Signed-off-by: Lang Cheng <chenglang@xxxxxxxxxx>
> Signed-off-by: Weihang Li <liweihang@xxxxxxxxxx>
> ---
> drivers/infiniband/hw/hns/hns_roce_device.h | 5 ++++-
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 28 ++++++++++++++++++++++------
> drivers/infiniband/hw/hns/hns_roce_qp.c | 3 +++
> 3 files changed, 29 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
> index a8183ef..517c127 100644
> --- a/drivers/infiniband/hw/hns/hns_roce_device.h
> +++ b/drivers/infiniband/hw/hns/hns_roce_device.h
> @@ -137,9 +137,10 @@ enum {
> SERV_TYPE_UD,
> };
>
> -enum {
> +enum hns_roce_qp_caps {
> HNS_ROCE_QP_CAP_RQ_RECORD_DB = BIT(0),
> HNS_ROCE_QP_CAP_SQ_RECORD_DB = BIT(1),
> + HNS_ROCE_QP_CAP_OWNER_DB = BIT(2),
> };
>
> enum hns_roce_cq_flags {
> @@ -229,6 +230,8 @@ enum {
> HNS_ROCE_CAP_FLAG_FRMR = BIT(8),
> HNS_ROCE_CAP_FLAG_QP_FLOW_CTRL = BIT(9),
> HNS_ROCE_CAP_FLAG_ATOMIC = BIT(10),
> + HNS_ROCE_CAP_FLAG_SDI_MODE = BIT(14),
> + HNS_ROCE_CAP_FLAG_MAX = BIT(28)
This enum is not used.
Thanks
