diff options
| author | Yixian Liu <liuyixian@huawei.com> | 2018-03-09 18:36:32 +0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2018-03-13 16:40:15 -0400 |
| commit | 86188a8810ed0b73ce6653daa3c4bc29e8a79a7c (patch) | |
| tree | c5b630cd24336e9aa9914258623d624211949e81 /drivers/infiniband/hw/hns/hns_roce_cq.c | |
| parent | 472bc0fbd47cb89f72607328b6b09b4a962ec200 (diff) | |
| download | linux-86188a8810ed0b73ce6653daa3c4bc29e8a79a7c.tar.gz | |
RDMA/hns: Support cq record doorbell for kernel space
This patch updates to support cq record doorbell for
the kernel space.
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
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: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hns/hns_roce_cq.c')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_cq.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c index 8226f19fcdd6..462b644bbbd7 100644 --- a/drivers/infiniband/hw/hns/hns_roce_cq.c +++ b/drivers/infiniband/hw/hns/hns_roce_cq.c @@ -358,12 +358,21 @@ struct ib_cq *hns_roce_ib_create_cq(struct ib_device *ib_dev, /* Get user space parameters */ uar = &to_hr_ucontext(context)->uar; } else { + if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) { + ret = hns_roce_alloc_db(hr_dev, &hr_cq->db, 1); + if (ret) + goto err_cq; + + hr_cq->set_ci_db = hr_cq->db.db_record; + *hr_cq->set_ci_db = 0; + } + /* Init mmt table and write buff address to mtt table */ ret = hns_roce_ib_alloc_cq_buf(hr_dev, &hr_cq->hr_buf, cq_entries); if (ret) { dev_err(dev, "Failed to alloc_cq_buf.\n"); - goto err_cq; + goto err_db; } uar = &hr_dev->priv_uar; @@ -436,6 +445,10 @@ err_mtt: hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf, hr_cq->ib_cq.cqe); +err_db: + if (!context && (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB)) + hns_roce_free_db(hr_dev, &hr_cq->db); + err_cq: kfree(hr_cq); return ERR_PTR(ret); @@ -465,6 +478,8 @@ int hns_roce_ib_destroy_cq(struct ib_cq *ib_cq) /* Free the buff of stored cq */ hns_roce_ib_free_cq_buf(hr_dev, &hr_cq->hr_buf, ib_cq->cqe); + if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_RECORD_DB) + hns_roce_free_db(hr_dev, &hr_cq->db); } kfree(hr_cq); |