diff options
| author | Yixing Liu <liuyixing1@huawei.com> | 2021-01-30 12:05:13 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-02-09 03:12:57 +0300 |
| commit | 01584a5edcc4a04ed4b993f75b6cc4bcf3c21818 (patch) | |
| tree | f0ced8cede328c657decf9088634fd0513e070a1 /drivers/infiniband/hw/hns/hns_roce_device.h | |
| parent | 429fa9698957d1a910535ce5e33aedf5adfdabc1 (diff) | |
| download | linux-01584a5edcc4a04ed4b993f75b6cc4bcf3c21818.tar.xz | |
RDMA/hns: Add support of direct wqe
Direct wqe is a mechanism to fill wqe directly into the hardware. In the
case of light load, the wqe will be filled into pcie bar space of the
hardware, this will reduce one memory access operation and therefore
reduce the latency.
Link: https://lore.kernel.org/r/1611997513-27107-1-git-send-email-liweihang@huawei.com
Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_device.h')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_device.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index d51641af9342..c9a9e80d91d2 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -93,6 +93,7 @@ #define HNS_ROCE_MAX_PORTS 6 #define HNS_ROCE_GID_SIZE 16 #define HNS_ROCE_SGE_SIZE 16 +#define HNS_ROCE_DWQE_SIZE 65536 #define HNS_ROCE_HOP_NUM_0 0xff @@ -649,6 +650,10 @@ struct hns_roce_work { u32 queue_num; }; +enum { + HNS_ROCE_QP_CAP_DIRECT_WQE = BIT(5), +}; + struct hns_roce_qp { struct ib_qp ibqp; struct hns_roce_wq rq; @@ -986,6 +991,7 @@ struct hns_roce_dev { struct mutex pgdir_mutex; int irq[HNS_ROCE_MAX_IRQ_NUM]; u8 __iomem *reg_base; + void __iomem *mem_base; struct hns_roce_caps caps; struct xarray qp_table_xa; |