From 86188a8810ed0b73ce6653daa3c4bc29e8a79a7c Mon Sep 17 00:00:00 2001 From: Yixian Liu Date: Fri, 9 Mar 2018 18:36:32 +0800 Subject: 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 Signed-off-by: Lijun Ou Signed-off-by: Wei Hu (Xavier) Signed-off-by: Shaobo Xu Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hns/hns_roce_cq.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) (limited to 'drivers/infiniband/hw/hns/hns_roce_cq.c') 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); -- cgit v1.2.3