[PATCH v2 for-rc 5/5] RDMA/hns: Support cqe inline in user space

Haoyue Xu
2022-10-26T09:51:58Z

Enable the CQEIE field and configure the CQEIS field of QPC.
And add compatibility handling.

Signed-off-by: Luoyouming <luoyouming@huawei.com>
Signed-off-by: Haoyue Xu <xuhaoyue1@hisilicon.com>
---
drivers/infiniband/hw/hns/hns_roce_device.h | 1 +
drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 12 ++++++++++++
drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 3 ++-
drivers/infiniband/hw/hns/hns_roce_main.c | 5 +++++
include/uapi/rdma/hns-abi.h | 2 ++
5 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
index 3f6f328d3a3e..893ec7e4e777 100644
--- a/drivers/infiniband/hw/hns/hns_roce_device.h
+++ b/drivers/infiniband/hw/hns/hns_roce_device.h
@@ -145,6 +145,7 @@ enum {
HNS_ROCE_CAP_FLAG_DIRECT_WQE = BIT(12),
HNS_ROCE_CAP_FLAG_SDI_MODE = BIT(14),
HNS_ROCE_CAP_FLAG_STASH = BIT(17),
+ HNS_ROCE_CAP_FLAG_CQE_INLINE = BIT(19),
HNS_ROCE_CAP_FLAG_RQ_INLINE = BIT(20),
};

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 19e326bda936..7381319d128a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -4596,6 +4596,18 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
hr_reg_clear(qpc_mask, QPC_RQIE);
}

+ if (udata &&
+ (ibqp->qp_type == IB_QPT_RC || ibqp->qp_type == IB_QPT_XRC_TGT) &&
+ (uctx->config & HNS_ROCE_CQE_INLINE_FLAGS)) {
+ hr_reg_write_bool(context, QPC_CQEIE,
+ hr_dev->caps.flags &
+ HNS_ROCE_CAP_FLAG_CQE_INLINE);
+ hr_reg_clear(qpc_mask, QPC_CQEIE);
+
+ hr_reg_write(context, QPC_CQEIS, 0);
+ hr_reg_clear(qpc_mask, QPC_CQEIS);
+ }
+
return 0;
}

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
index c7bf2d52c1cd..d1fc76d7d78a 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
@@ -526,7 +526,8 @@ struct hns_roce_v2_qp_context {
#define QPC_RQ_RTY_TX_ERR QPC_FIELD_LOC(607, 607)
#define QPC_RX_CQN QPC_FIELD_LOC(631, 608)
#define QPC_XRC_QP_TYPE QPC_FIELD_LOC(632, 632)
-#define QPC_RSV3 QPC_FIELD_LOC(634, 633)
+#define QPC_CQEIE QPC_FIELD_LOC(633, 633)
+#define QPC_CQEIS QPC_FIELD_LOC(634, 634)
#define QPC_MIN_RNR_TIME QPC_FIELD_LOC(639, 635)
#define QPC_RQ_PRODUCER_IDX QPC_FIELD_LOC(655, 640)
#define QPC_RQ_CONSUMER_IDX QPC_FIELD_LOC(671, 656)
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index ea1ef395f60f..56ed24501155 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -384,6 +384,11 @@ static int hns_roce_alloc_ucontext(struct ib_ucontext *uctx,
resp.config |= HNS_ROCE_RSP_RQ_INLINE_FLAGS;
}

+ if (hr_dev->caps.flags & HNS_ROCE_CAP_FLAG_CQE_INLINE) {
+ context->config |= ucmd.config & HNS_ROCE_CQE_INLINE_FLAGS;
+ resp.config |= HNS_ROCE_RSP_CQE_INLINE_FLAGS;
+ }
+
ret = hns_roce_uar_alloc(hr_dev, &context->uar);
if (ret)
goto error_fail_uar_alloc;
diff --git a/include/uapi/rdma/hns-abi.h b/include/uapi/rdma/hns-abi.h
index 9375ac3de059..b2b41d9d0dee 100644
--- a/include/uapi/rdma/hns-abi.h
+++ b/include/uapi/rdma/hns-abi.h
@@ -88,11 +88,13 @@ struct hns_roce_ib_create_qp_resp {
enum {
HNS_ROCE_EXSGE_FLAGS = 1 << 0,
HNS_ROCE_RQ_INLINE_FLAGS = 1 << 1,
+ HNS_ROCE_CQE_INLINE_FLAGS = 1 << 2,
};

enum {
HNS_ROCE_RSP_EXSGE_FLAGS = 1 << 0,
HNS_ROCE_RSP_RQ_INLINE_FLAGS = 1 << 1,
+ HNS_ROCE_RSP_CQE_INLINE_FLAGS = 1 << 2,
};

--
2.30.0