Re: [PATCH v3 for-next] RDMA/hns: dump detailed driver-specific CQ information for hip08

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Hi Leon:

Thanks a lot for your reply.

On 2018/11/24 2:02, Leon Romanovsky wrote:
> On Fri, Nov 23, 2018 at 05:08:36PM +0800, Tao Tian wrote:
>> 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 1024 users 2 poll-ctx WORKQUEUE pid 0 comm [ib_core] cq_st 0x2a8
>> 1 cqn 0 cqe_hopnum 0x40000000 cq_pi 0 cq_ci 0 cq_maxcnt 0 cq_period 0 se_cqe 0
> 
> sorry to be late, but you are doing CQ information, there is no need in
> "cq_" and "cqe_" prefixes.
Ok, "cq_" and "cqe_" prefixes will be delete.

The output should be as follows.
$ ./rdma res show cq dev hnseth0 -d
dev hnseth0 cqe 1024 users 2 poll-ctx WORKQUEUE pid 0 comm [ib_core] st 0x2a8
1 cqn 0 hopnum 0x40000000 pi 0 ci 0 maxcnt 0 period 0 se 0

Thanks
> 
> And we already asked it for more than twice, don't you print physical
> addresses?
There is no need to print physical addresses. There are two locations
that use rdma_nl_put_driver_u32_hex, because these are bit flags.
For example, 'cq_st' contains cq_st and ceqn, page_offset etc.
Because the name is too long, so I omitted some field names, and gave
it an abbreviation.
If this is not appropriate, how do I name it?

'cqe_hopnum' is the same situation.

Thanks
> 
> Thanks
> 
>>
>> Signed-off-by: Tao Tian <tiantao6@xxxxxxxxxx>
>> Signed-off-by: Yangyang Li <liyangyang20@xxxxxxxxxx>
>> ---
>> v2->v3:
>> 1.Modify the output message.
>>
>> v1->v2:
>> 1.Fixed the warning about the SPDX tag.
>> 2.Add the output of rdmatool to the commit message.
>> 3.Modify the function pointer to register res.
>> ---
>>  drivers/infiniband/hw/hns/Makefile             |  4 +-
>>  drivers/infiniband/hw/hns/hns_roce_cmd.h       |  1 +
>>  drivers/infiniband/hw/hns/hns_roce_device.h    |  8 +++
>>  drivers/infiniband/hw/hns/hns_roce_hw_v2.c     | 15 ++++--
>>  drivers/infiniband/hw/hns/hns_roce_hw_v2.h     |  8 +++
>>  drivers/infiniband/hw/hns/hns_roce_hw_v2_dfx.c | 36 +++++++++++++
>>  drivers/infiniband/hw/hns/hns_roce_main.c      |  1 +
>>  drivers/infiniband/hw/hns/hns_roce_restrack.c  | 74 ++++++++++++++++++++++++++
>>  8 files changed, 140 insertions(+), 7 deletions(-)
>>  create mode 100644 drivers/infiniband/hw/hns/hns_roce_hw_v2_dfx.c
>>  create mode 100644 drivers/infiniband/hw/hns/hns_roce_restrack.c
>>
>> diff --git a/drivers/infiniband/hw/hns/Makefile b/drivers/infiniband/hw/hns/Makefile
>> index cf03404..5b99229 100644
>> --- a/drivers/infiniband/hw/hns/Makefile
>> +++ b/drivers/infiniband/hw/hns/Makefile
>> @@ -7,8 +7,8 @@ ccflags-y :=  -Idrivers/net/ethernet/hisilicon/hns3
>>  obj-$(CONFIG_INFINIBAND_HNS) += hns-roce.o
>>  hns-roce-objs := hns_roce_main.o hns_roce_cmd.o hns_roce_pd.o \
>>  	hns_roce_ah.o hns_roce_hem.o hns_roce_mr.o hns_roce_qp.o \
>> -	hns_roce_cq.o hns_roce_alloc.o hns_roce_db.o
>> +	hns_roce_cq.o hns_roce_alloc.o hns_roce_db.o hns_roce_restrack.o
>>  obj-$(CONFIG_INFINIBAND_HNS_HIP06) += hns-roce-hw-v1.o
>>  hns-roce-hw-v1-objs := hns_roce_hw_v1.o
>>  obj-$(CONFIG_INFINIBAND_HNS_HIP08) += hns-roce-hw-v2.o
>> -hns-roce-hw-v2-objs := hns_roce_hw_v2.o
>> +hns-roce-hw-v2-objs := hns_roce_hw_v2.o hns_roce_hw_v2_dfx.o
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_cmd.h b/drivers/infiniband/hw/hns/hns_roce_cmd.h
>> index 9549ae5..e93b6fb 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_cmd.h
>> +++ b/drivers/infiniband/hw/hns/hns_roce_cmd.h
>> @@ -53,6 +53,7 @@ enum {
>>  	HNS_ROCE_CMD_QUERY_QPC		= 0x42,
>>
>>  	HNS_ROCE_CMD_MODIFY_CQC		= 0x52,
>> +	HNS_ROCE_CMD_QUERY_CQC		= 0x53,
>>  	/* CQC BT commands */
>>  	HNS_ROCE_CMD_WRITE_CQC_BT0	= 0x10,
>>  	HNS_ROCE_CMD_WRITE_CQC_BT1	= 0x11,
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h
>> index d39bdfd..5f2c85e 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_device.h
>> +++ b/drivers/infiniband/hw/hns/hns_roce_device.h
>> @@ -756,6 +756,11 @@ struct hns_roce_work {
>>  	int sub_type;
>>  };
>>
>> +struct hns_roce_dfx_hw {
>> +	int (*query_cqc_info)(struct hns_roce_dev *hr_dev, u32 cqn,
>> +			      int *buffer);
>> +};
>> +
>>  struct hns_roce_hw {
>>  	int (*reset)(struct hns_roce_dev *hr_dev, bool enable);
>>  	int (*cmq_init)(struct hns_roce_dev *hr_dev);
>> @@ -851,6 +856,7 @@ struct hns_roce_dev {
>>  	const struct hns_roce_hw *hw;
>>  	void			*priv;
>>  	struct workqueue_struct *irq_workq;
>> +	const struct hns_roce_dfx_hw *dfx;
>>  };
>>
>>  static inline struct hns_roce_dev *to_hr_dev(struct ib_device *ib_dev)
>> @@ -1056,4 +1062,6 @@ int hns_get_gid_index(struct hns_roce_dev *hr_dev, u8 port, int gid_index);
>>  int hns_roce_init(struct hns_roce_dev *hr_dev);
>>  void hns_roce_exit(struct hns_roce_dev *hr_dev);
>>
>> +int hns_roce_fill_res_entry(struct sk_buff *msg,
>> +			     struct rdma_restrack_entry *res);
>>  #endif /* _HNS_ROCE_DEVICE_H */
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> index a4c62ae..dbc1931 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> @@ -846,9 +846,9 @@ static void hns_roce_v2_cmq_exit(struct hns_roce_dev *hr_dev)
>>  	hns_roce_free_cmq_desc(hr_dev, &priv->cmq.crq);
>>  }
>>
>> -static void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
>> -					  enum hns_roce_opcode_type opcode,
>> -					  bool is_read)
>> +void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
>> +				    enum hns_roce_opcode_type opcode,
>> +				    bool is_read)
>>  {
>>  	memset((void *)desc, 0, sizeof(struct hns_roce_cmq_desc));
>>  	desc->opcode = cpu_to_le16(opcode);
>> @@ -892,8 +892,8 @@ static int hns_roce_cmq_csq_clean(struct hns_roce_dev *hr_dev)
>>  	return clean;
>>  }
>>
>> -static int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
>> -			     struct hns_roce_cmq_desc *desc, int num)
>> +int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
>> +		       struct hns_roce_cmq_desc *desc, int num)
>>  {
>>  	struct hns_roce_v2_priv *priv = (struct hns_roce_v2_priv *)hr_dev->priv;
>>  	struct hns_roce_v2_cmq_ring *csq = &priv->cmq.csq;
>> @@ -5340,6 +5340,10 @@ static void hns_roce_v2_cleanup_eq_table(struct hns_roce_dev *hr_dev)
>>  	destroy_workqueue(hr_dev->irq_workq);
>>  }
>>
>> +static const struct hns_roce_dfx_hw hns_roce_dfx_hw_v2 = {
>> +	.query_cqc_info = hns_roce_v2_query_cqc_info,
>> +};
>> +
>>  static const struct hns_roce_hw hns_roce_hw_v2 = {
>>  	.cmq_init = hns_roce_v2_cmq_init,
>>  	.cmq_exit = hns_roce_v2_cmq_exit,
>> @@ -5394,6 +5398,7 @@ static int hns_roce_hw_v2_get_cfg(struct hns_roce_dev *hr_dev,
>>  	}
>>
>>  	hr_dev->hw = &hns_roce_hw_v2;
>> +	hr_dev->dfx = &hns_roce_dfx_hw_v2;
>>  	hr_dev->sdb_offset = ROCEE_DB_SQ_L_0_REG;
>>  	hr_dev->odb_offset = hr_dev->sdb_offset;
>>
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> index 8bc8206..929b89e 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> @@ -1612,4 +1612,12 @@ struct hns_roce_wqe_atomic_seg {
>>  	__le64          cmp_data;
>>  };
>>
>> +int hns_roce_v2_query_cqc_info(struct hns_roce_dev *hr_dev, u32 cqn,
>> +				int *buffer);
>> +void hns_roce_cmq_setup_basic_desc(struct hns_roce_cmq_desc *desc,
>> +				    enum hns_roce_opcode_type opcode,
>> +				    bool is_read);
>> +int hns_roce_cmq_send(struct hns_roce_dev *hr_dev,
>> +		       struct hns_roce_cmq_desc *desc, int num);
>> +
>>  #endif
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2_dfx.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2_dfx.c
>> new file mode 100644
>> index 0000000..ef6412b
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2_dfx.c
>> @@ -0,0 +1,36 @@
>> +// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +// Copyright (c) 2018 Hisilicon Limited.
>> +
>> +#include "hns_roce_device.h"
>> +#include "hns_roce_cmd.h"
>> +#include "hns_roce_hw_v2.h"
>> +
>> +int hns_roce_v2_query_cqc_info(struct hns_roce_dev *hr_dev, u32 cqn,
>> +				int *buffer)
>> +{
>> +	struct hns_roce_v2_cq_context *cq_context;
>> +	struct hns_roce_cmd_mailbox *mailbox;
>> +	int ret;
>> +
>> +	mailbox = hns_roce_alloc_cmd_mailbox(hr_dev);
>> +	if (IS_ERR(mailbox))
>> +		return PTR_ERR(mailbox);
>> +
>> +	cq_context = mailbox->buf;
>> +	ret = hns_roce_cmd_mbox(hr_dev, 0, mailbox->dma,
>> +		cqn, 0,
>> +		HNS_ROCE_CMD_QUERY_CQC,
>> +		HNS_ROCE_CMD_TIMEOUT_MSECS);
>> +	if (ret) {
>> +		dev_err(hr_dev->dev, "QUERY cqc cmd process error\n");
>> +		goto err_mailbox;
>> +	}
>> +
>> +	memcpy(buffer, cq_context, sizeof(*cq_context));
>> +
>> +err_mailbox:
>> +	hns_roce_free_cmd_mailbox(hr_dev, mailbox);
>> +
>> +	return ret;
>> +}
>> +
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
>> index 1b3ee51..0aaf1ef 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_main.c
>> +++ b/drivers/infiniband/hw/hns/hns_roce_main.c
>> @@ -544,6 +544,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
>>  	/* OTHERS */
>>  	ib_dev->get_port_immutable	= hns_roce_port_immutable;
>>  	ib_dev->disassociate_ucontext	= hns_roce_disassociate_ucontext;
>> +	ib_dev->res.fill_res_entry	= hns_roce_fill_res_entry;
>>
>>  	ib_dev->driver_id = RDMA_DRIVER_HNS;
>>  	ret = ib_register_device(ib_dev, "hns_%d", NULL);
>> 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 0000000..4db0e32
>> --- /dev/null
>> +++ b/drivers/infiniband/hw/hns/hns_roce_restrack.c
>> @@ -0,0 +1,74 @@
>> +// SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +// Copyright (c) 2018 Hisilicon Limited.
>> +#include "hns_roce_device.h"
>> +#include <rdma/rdma_cm.h>
>> +#include <rdma/restrack.h>
>> +#include <uapi/rdma/rdma_netlink.h>
>> +
>> +static int hns_roce_fill_cq(struct sk_buff *msg, int *cqc)
>> +{
>> +	if (rdma_nl_put_driver_u32_hex(msg, "cq_st", *cqc))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "cqn", *(cqc + 1)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32_hex(msg, "cqe_hopnum", *(cqc + 3)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "cq_pi", *(cqc + 6)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "cq_ci", *(cqc + 7)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "cq_maxcnt", *(cqc + 12)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "cq_period", *(cqc + 13)))
>> +		goto err;
>> +	if (rdma_nl_put_driver_u32(msg, "se_cqe", *(cqc + 15)))
>> +		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);
>> +	int buffer[hr_dev->caps.cqc_entry_sz];
>> +	struct nlattr *table_attr;
>> +	int ret;
>> +
>> +	if (!hr_dev->dfx->query_cqc_info)
>> +		return -EINVAL;
>> +
>> +	ret = hr_dev->dfx->query_cqc_info(hr_dev, hr_cq->cqn, buffer);
>> +	if (ret)
>> +		return ret;
>> +
>> +	table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_DRIVER);
>> +	if (!table_attr)
>> +		goto err;
>> +
>> +	if (hns_roce_fill_cq(msg, buffer))
>> +		goto err_cancel_table;
>> +
>> +	nla_nest_end(msg, table_attr);
>> +
>> +	return 0;
>> +
>> +err_cancel_table:
>> +	nla_nest_cancel(msg, table_attr);
>> +err:
>> +	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;
>> +}
>> --
>> 2.7.4
>>




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