RDMA/hns: Support QP's restrack raw ops for hns driver

The QP raw restrack attributes come from the queue context maintained by
the ROCEE.

For example:

$ rdma res show qp link hns_0 -jp -dd -r
[ {
        "ifindex": 4,
        "ifname": "hns_0",
        "data": [ 2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,0,0,0,
		  5,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,255,156,0,0,63,156,0,0,
		  7,0,0,0,1,0,0,0,9,0,0,0,0,0,0,0,2,0,0,0,2,0,0,0,0,0,0,
		  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
		  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,63,156,0,
		  0,0,0,0,0 ]
    } ]

Link: https://lore.kernel.org/r/20220822104455.2311053-6-liangwenpeng@huawei.comSigned-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/hw/hns/hns_roce_device.h

@@ -895,6 +895,7 @@ struct hns_roce_hw {
 	void (*cleanup_eq)(struct hns_roce_dev *hr_dev);
 	int (*write_srqc)(struct hns_roce_srq *srq, void *mb_buf);
 	int (*query_cqc)(struct hns_roce_dev *hr_dev, u32 cqn, void *buffer);
+	int (*query_qpc)(struct hns_roce_dev *hr_dev, u32 qpn, void *buffer);
 	const struct ib_device_ops *hns_roce_dev_ops;
 	const struct ib_device_ops *hns_roce_dev_srq_ops;
 };
@@ -1226,6 +1227,7 @@ void hns_roce_exit(struct hns_roce_dev *hr_dev);
 int hns_roce_fill_res_cq_entry(struct sk_buff *msg, struct ib_cq *ib_cq);
 int hns_roce_fill_res_cq_entry_raw(struct sk_buff *msg, struct ib_cq *ib_cq);
 int hns_roce_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ib_qp);
+int hns_roce_fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ib_qp);
 struct hns_user_mmap_entry *
 hns_roce_user_mmap_entry_insert(struct ib_ucontext *ucontext, u64 address,
 				size_t length,

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -5307,9 +5307,8 @@ static int to_ib_qp_st(enum hns_roce_v2_qp_state state)
 	return (state < ARRAY_SIZE(map)) ? map[state] : -1;
 }
 
-static int hns_roce_v2_query_qpc(struct hns_roce_dev *hr_dev,
-				 struct hns_roce_qp *hr_qp,
-				 struct hns_roce_v2_qp_context *hr_context)
+static int hns_roce_v2_query_qpc(struct hns_roce_dev *hr_dev, u32 qpn,
+				 void *buffer)
 {
 	struct hns_roce_cmd_mailbox *mailbox;
 	int ret;
@@ -5319,11 +5318,11 @@ static int hns_roce_v2_query_qpc(struct hns_roce_dev *hr_dev,
 		return PTR_ERR(mailbox);
 
 	ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma, HNS_ROCE_CMD_QUERY_QPC,
-				hr_qp->qpn);
+				qpn);
 	if (ret)
 		goto out;
 
-	memcpy(hr_context, mailbox->buf, hr_dev->caps.qpc_sz);
+	memcpy(buffer, mailbox->buf, hr_dev->caps.qpc_sz);
 
 out:
 	hns_roce_free_cmd_mailbox(hr_dev, mailbox);
@@ -5353,7 +5352,7 @@ static int hns_roce_v2_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 		goto done;
 	}
 
-	ret = hns_roce_v2_query_qpc(hr_dev, hr_qp, &context);
+	ret = hns_roce_v2_query_qpc(hr_dev, hr_qp->qpn, &context);
 	if (ret) {
 		ibdev_err(ibdev, "failed to query QPC, ret = %d.\n", ret);
 		ret = -EINVAL;
@@ -6645,6 +6644,7 @@ static const struct hns_roce_hw hns_roce_hw_v2 = {
 	.cleanup_eq = hns_roce_v2_cleanup_eq_table,
 	.write_srqc = hns_roce_v2_write_srqc,
 	.query_cqc = hns_roce_v2_query_cqc,
+	.query_qpc = hns_roce_v2_query_qpc,
 	.hns_roce_dev_ops = &hns_roce_v2_dev_ops,
 	.hns_roce_dev_srq_ops = &hns_roce_v2_dev_srq_ops,
 };

drivers/infiniband/hw/hns/hns_roce_main.c

@@ -569,6 +569,7 @@ static const struct ib_device_ops hns_roce_dev_restrack_ops = {
 	.fill_res_cq_entry = hns_roce_fill_res_cq_entry,
 	.fill_res_cq_entry_raw = hns_roce_fill_res_cq_entry_raw,
 	.fill_res_qp_entry = hns_roce_fill_res_qp_entry,
+	.fill_res_qp_entry_raw = hns_roce_fill_res_qp_entry_raw,
 };
 
 static int hns_roce_register_device(struct hns_roce_dev *hr_dev)

drivers/infiniband/hw/hns/hns_roce_restrack.c

@@ -112,3 +112,59 @@ int hns_roce_fill_res_qp_entry(struct sk_buff *msg, struct ib_qp *ib_qp)
 
 	return -EMSGSIZE;
 }
+
+int hns_roce_fill_res_qp_entry_raw(struct sk_buff *msg, struct ib_qp *ib_qp)
+{
+	struct hns_roce_dev *hr_dev = to_hr_dev(ib_qp->device);
+	struct hns_roce_qp *hr_qp = to_hr_qp(ib_qp);
+	struct hns_roce_v2_qp_context context;
+	u32 data[MAX_ENTRY_NUM] = {};
+	int offset = 0;
+	int ret;
+
+	if (!hr_dev->hw->query_qpc)
+		return -EINVAL;
+
+	ret = hr_dev->hw->query_qpc(hr_dev, hr_qp->qpn, &context);
+	if (ret)
+		return -EINVAL;
+
+	data[offset++] = hr_reg_read(&context, QPC_QP_ST);
+	data[offset++] = hr_reg_read(&context, QPC_ERR_TYPE);
+	data[offset++] = hr_reg_read(&context, QPC_CHECK_FLG);
+	data[offset++] = hr_reg_read(&context, QPC_SRQ_EN);
+	data[offset++] = hr_reg_read(&context, QPC_SRQN);
+	data[offset++] = hr_reg_read(&context, QPC_QKEY_XRCD);
+	data[offset++] = hr_reg_read(&context, QPC_TX_CQN);
+	data[offset++] = hr_reg_read(&context, QPC_RX_CQN);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_PRODUCER_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_CONSUMER_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_RECORD_EN);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_PRODUCER_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_CONSUMER_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_SHIFT);
+	data[offset++] = hr_reg_read(&context, QPC_RQWS);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_SHIFT);
+	data[offset++] = hr_reg_read(&context, QPC_SGE_SHIFT);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_HOP_NUM);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_HOP_NUM);
+	data[offset++] = hr_reg_read(&context, QPC_SGE_HOP_NUM);
+	data[offset++] = hr_reg_read(&context, QPC_WQE_SGE_BA_PG_SZ);
+	data[offset++] = hr_reg_read(&context, QPC_WQE_SGE_BUF_PG_SZ);
+	data[offset++] = hr_reg_read(&context, QPC_RETRY_NUM_INIT);
+	data[offset++] = hr_reg_read(&context, QPC_RETRY_CNT);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_CUR_PSN);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_MAX_PSN);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_FLUSH_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_MAX_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_TX_ERR);
+	data[offset++] = hr_reg_read(&context, QPC_SQ_RX_ERR);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_RX_ERR);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_TX_ERR);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_CQE_IDX);
+	data[offset++] = hr_reg_read(&context, QPC_RQ_RTY_TX_ERR);
+
+	ret = nla_put(msg, RDMA_NLDEV_ATTR_RES_RAW, offset * sizeof(u32), data);
+
+	return ret;
+}