RDMA/hns: Dump detailed driver-specific CQ

This patch adds support of resource track for hip08 and take dumping cq
context state used for debugging as an example.  More resources track
supports for hns driver will be added in future.

The output should be as follows.
$ rdma res show cq dev hnseth0 -d
dev hnseth0 cqe 1023 users 2 poll-ctx WORKQUEUE pid 0 comm [ib_core] drv_state 2 drv_ceq
n 0 drv_cqn 0 drv_hopnum 1 drv_pi 0 drv_ci 0 drv_coalesce 0 drv_period 0 drv_cnt 0

Signed-off-by: Tao Tian <tiantao6@huawei.com>
Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: chenglang <chenglang@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/hns/hns_roce_restrack.c b/drivers/infiniband/hw/hns/hns_roce_restrack.c
new file mode 100644
index 000000000000..0a31d0a3d657
--- /dev/null
+++ b/drivers/infiniband/hw/hns/hns_roce_restrack.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+// Copyright (c) 2019 Hisilicon Limited.
+
+#include <rdma/rdma_cm.h>
+#include <rdma/restrack.h>
+#include <uapi/rdma/rdma_netlink.h>
+#include "hnae3.h"
+#include "hns_roce_common.h"
+#include "hns_roce_device.h"
+#include "hns_roce_hw_v2.h"
+
+static int hns_roce_fill_cq(struct sk_buff *msg,
+			    struct hns_roce_v2_cq_context *context)
+{
+	if (rdma_nl_put_driver_u32(msg, "state",
+				   roce_get_field(context->byte_4_pg_ceqn,
+						  V2_CQC_BYTE_4_ARM_ST_M,
+						  V2_CQC_BYTE_4_ARM_ST_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(msg, "ceqn",
+				   roce_get_field(context->byte_4_pg_ceqn,
+						  V2_CQC_BYTE_4_CEQN_M,
+						  V2_CQC_BYTE_4_CEQN_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(msg, "cqn",
+				   roce_get_field(context->byte_8_cqn,
+						  V2_CQC_BYTE_8_CQN_M,
+						  V2_CQC_BYTE_8_CQN_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(msg, "hopnum",
+				   roce_get_field(context->byte_16_hop_addr,
+						  V2_CQC_BYTE_16_CQE_HOP_NUM_M,
+						  V2_CQC_BYTE_16_CQE_HOP_NUM_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(
+		    msg, "pi",
+		    roce_get_field(context->byte_28_cq_pi,
+				   V2_CQC_BYTE_28_CQ_PRODUCER_IDX_M,
+				   V2_CQC_BYTE_28_CQ_PRODUCER_IDX_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(
+		    msg, "ci",
+		    roce_get_field(context->byte_32_cq_ci,
+				   V2_CQC_BYTE_32_CQ_CONSUMER_IDX_M,
+				   V2_CQC_BYTE_32_CQ_CONSUMER_IDX_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(
+		    msg, "coalesce",
+		    roce_get_field(context->byte_56_cqe_period_maxcnt,
+				   V2_CQC_BYTE_56_CQ_MAX_CNT_M,
+				   V2_CQC_BYTE_56_CQ_MAX_CNT_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(
+		    msg, "period",
+		    roce_get_field(context->byte_56_cqe_period_maxcnt,
+				   V2_CQC_BYTE_56_CQ_PERIOD_M,
+				   V2_CQC_BYTE_56_CQ_PERIOD_S)))
+		goto err;
+
+	if (rdma_nl_put_driver_u32(msg, "cnt",
+				   roce_get_field(context->byte_52_cqe_cnt,
+						  V2_CQC_BYTE_52_CQE_CNT_M,
+						  V2_CQC_BYTE_52_CQE_CNT_S)))
+		goto err;
+
+	return 0;
+
+err:
+	return -EMSGSIZE;
+}
+
+static int hns_roce_fill_res_cq_entry(struct sk_buff *msg,
+				      struct rdma_restrack_entry *res)
+{
+	struct ib_cq *ib_cq = container_of(res, struct ib_cq, res);
+	struct hns_roce_dev *hr_dev = to_hr_dev(ib_cq->device);
+	struct hns_roce_cq *hr_cq = to_hr_cq(ib_cq);
+	struct hns_roce_v2_cq_context *context;
+	struct nlattr *table_attr;
+	int ret;
+
+	if (!hr_dev->dfx->query_cqc_info)
+		return -EINVAL;
+
+	context = kzalloc(sizeof(struct hns_roce_v2_cq_context), GFP_KERNEL);
+	if (!context)
+		return -ENOMEM;
+
+	ret = hr_dev->dfx->query_cqc_info(hr_dev, hr_cq->cqn, (int *)context);
+	if (ret)
+		goto err;
+
+	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
+	if (!table_attr)
+		goto err;
+
+	if (hns_roce_fill_cq(msg, context))
+		goto err_cancel_table;
+
+	nla_nest_end(msg, table_attr);
+	kfree(context);
+
+	return 0;
+
+err_cancel_table:
+	nla_nest_cancel(msg, table_attr);
+err:
+	kfree(context);
+	return -EMSGSIZE;
+}
+
+int hns_roce_fill_res_entry(struct sk_buff *msg,
+			    struct rdma_restrack_entry *res)
+{
+	if (res->type == RDMA_RESTRACK_CQ)
+		return hns_roce_fill_res_cq_entry(msg, res);
+
+	return 0;
+}