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List: linux-rdma
Subject: Re: [PATCH for-next 5/6] RDMA/hns: Use new interface to write DB related fields
From: liweihang <liweihang () huawei ! com>
Date: 2021-05-31 2:04:35
Message-ID: a4cb10430c034ba8bfabc83476039240 () huawei ! com
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On 2021/5/29 18:11, chenglang wrote:
>
> 在 2021/5/29 17:39, Weihang Li 写道:
>> From: Yixing Liu <liuyixing1@huawei.com>
>>
>> Use hr_write_reg() instead of roece_set_field().
>
> roece_set_field >>> roce_set_field.
>
OK, thanks.
Weihang
> Thanks.
>> Signed-off-by: Yixing Liu <liuyixing1@huawei.com>
>> Signed-off-by: Weihang Li <liweihang@huawei.com>
>> ---
>> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 85 ++++++++++++------------------
>> drivers/infiniband/hw/hns/hns_roce_hw_v2.h | 42 ++++++---------
>> 2 files changed, 49 insertions(+), 78 deletions(-)
>>
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> index 047b27c..7cd0bc6 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
>> @@ -639,17 +639,10 @@ static inline void update_sq_db(struct hns_roce_dev *hr_dev,
>> } else {
>> struct hns_roce_v2_db sq_db = {};
>>
>> - roce_set_field(sq_db.byte_4, V2_DB_TAG_M, V2_DB_TAG_S,
>> - qp->doorbell_qpn);
>> - roce_set_field(sq_db.byte_4, V2_DB_CMD_M, V2_DB_CMD_S,
>> - HNS_ROCE_V2_SQ_DB);
>> -
>> - /* indicates data on new BAR, 0 : SQ doorbell, 1 : DWQE */
>> - roce_set_bit(sq_db.byte_4, V2_DB_FLAG_S, 0);
>> - roce_set_field(sq_db.parameter, V2_DB_PRODUCER_IDX_M,
>> - V2_DB_PRODUCER_IDX_S, qp->sq.head);
>> - roce_set_field(sq_db.parameter, V2_DB_SL_M, V2_DB_SL_S,
>> - qp->sl);
>> + hr_reg_write(&sq_db, DB_TAG, qp->doorbell_qpn);
>> + hr_reg_write(&sq_db, DB_CMD, HNS_ROCE_V2_SQ_DB);
>> + hr_reg_write(&sq_db, DB_PI, qp->sq.head);
>> + hr_reg_write(&sq_db, DB_SL, qp->sl);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&sq_db, qp->sq.db_reg);
>> }
>> @@ -677,12 +670,9 @@ static inline void update_rq_db(struct hns_roce_dev *hr_dev,
>> } else {
>> struct hns_roce_v2_db rq_db = {};
>>
>> - roce_set_field(rq_db.byte_4, V2_DB_TAG_M, V2_DB_TAG_S,
>> - qp->qpn);
>> - roce_set_field(rq_db.byte_4, V2_DB_CMD_M, V2_DB_CMD_S,
>> - HNS_ROCE_V2_RQ_DB);
>> - roce_set_field(rq_db.parameter, V2_DB_PRODUCER_IDX_M,
>> - V2_DB_PRODUCER_IDX_S, qp->rq.head);
>> + hr_reg_write(&rq_db, DB_TAG, qp->qpn);
>> + hr_reg_write(&rq_db, DB_CMD, HNS_ROCE_V2_RQ_DB);
>> + hr_reg_write(&rq_db, DB_PI, qp->rq.head);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&rq_db,
>> qp->rq.db_reg);
>> @@ -999,6 +989,13 @@ static void fill_wqe_idx(struct hns_roce_srq *srq, unsigned int wqe_idx)
>> idx_que->head++;
>> }
>>
>> +static void update_srq_db(struct hns_roce_v2_db *db, struct hns_roce_srq *srq)
>> +{
>> + hr_reg_write(db, DB_TAG, srq->srqn);
>> + hr_reg_write(db, DB_CMD, HNS_ROCE_V2_SRQ_DB);
>> + hr_reg_write(db, DB_PI, srq->idx_que.head);
>> +}
>> +
>> static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
>> const struct ib_recv_wr *wr,
>> const struct ib_recv_wr **bad_wr)
>> @@ -1036,12 +1033,7 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
>> }
>>
>> if (likely(nreq)) {
>> - roce_set_field(srq_db.byte_4, V2_DB_TAG_M, V2_DB_TAG_S,
>> - srq->srqn);
>> - roce_set_field(srq_db.byte_4, V2_DB_CMD_M, V2_DB_CMD_S,
>> - HNS_ROCE_V2_SRQ_DB);
>> - roce_set_field(srq_db.parameter, V2_DB_PRODUCER_IDX_M,
>> - V2_DB_PRODUCER_IDX_S, srq->idx_que.head);
>> + update_srq_db(&srq_db, srq);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&srq_db, srq->db_reg);
>> }
>> @@ -3195,14 +3187,10 @@ static inline void update_cq_db(struct hns_roce_dev *hr_dev,
>> } else {
>> struct hns_roce_v2_db cq_db = {};
>>
>> - roce_set_field(cq_db.byte_4, V2_DB_TAG_M, V2_DB_TAG_S,
>> - hr_cq->cqn);
>> - roce_set_field(cq_db.byte_4, V2_DB_CMD_M, V2_DB_CMD_S,
>> - HNS_ROCE_V2_CQ_DB);
>> - roce_set_field(cq_db.parameter, V2_CQ_DB_CONS_IDX_M,
>> - V2_CQ_DB_CONS_IDX_S, hr_cq->cons_index);
>> - roce_set_field(cq_db.parameter, V2_CQ_DB_CMD_SN_M,
>> - V2_CQ_DB_CMD_SN_S, 1);
>> + hr_reg_write(&cq_db, DB_TAG, hr_cq->cqn);
>> + hr_reg_write(&cq_db, DB_CMD, HNS_ROCE_V2_CQ_DB);
>> + hr_reg_write(&cq_db, DB_CQ_CI, hr_cq->cons_index);
>> + hr_reg_write(&cq_db, DB_CQ_CMD_SN, 1);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&cq_db, hr_cq->db_reg);
>> }
>> @@ -3323,14 +3311,11 @@ static int hns_roce_v2_req_notify_cq(struct ib_cq *ibcq,
>> notify_flag = (flags & IB_CQ_SOLICITED_MASK) == IB_CQ_SOLICITED ?
>> V2_CQ_DB_REQ_NOT : V2_CQ_DB_REQ_NOT_SOL;
>>
>> - roce_set_field(cq_db.byte_4, V2_DB_TAG_M, V2_DB_TAG_S, hr_cq->cqn);
>> - roce_set_field(cq_db.byte_4, V2_DB_CMD_M, V2_DB_CMD_S,
>> - HNS_ROCE_V2_CQ_DB_NOTIFY);
>> - roce_set_field(cq_db.parameter, V2_CQ_DB_CONS_IDX_M,
>> - V2_CQ_DB_CONS_IDX_S, hr_cq->cons_index);
>> - roce_set_field(cq_db.parameter, V2_CQ_DB_CMD_SN_M,
>> - V2_CQ_DB_CMD_SN_S, hr_cq->arm_sn);
>> - roce_set_bit(cq_db.parameter, V2_CQ_DB_NOTIFY_TYPE_S, notify_flag);
>> + hr_reg_write(&cq_db, DB_TAG, hr_cq->cqn);
>> + hr_reg_write(&cq_db, DB_CMD, HNS_ROCE_V2_CQ_DB_NOTIFY);
>> + hr_reg_write(&cq_db, DB_CQ_CI, hr_cq->cons_index);
>> + hr_reg_write(&cq_db, DB_CQ_CMD_SN, hr_cq->arm_sn);
>> + hr_reg_write(&cq_db, DB_CQ_NOTIFY, notify_flag);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&cq_db, hr_cq->db_reg);
>>
>> @@ -5545,22 +5530,20 @@ static void update_eq_db(struct hns_roce_eq *eq)
>> struct hns_roce_v2_db eq_db = {};
>>
>> if (eq->type_flag == HNS_ROCE_AEQ) {
>> - roce_set_field(eq_db.byte_4, V2_EQ_DB_CMD_M, V2_EQ_DB_CMD_S,
>> - eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
>> - HNS_ROCE_EQ_DB_CMD_AEQ :
>> - HNS_ROCE_EQ_DB_CMD_AEQ_ARMED);
>> + hr_reg_write(&eq_db, EQ_DB_CMD,
>> + eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
>> + HNS_ROCE_EQ_DB_CMD_AEQ :
>> + HNS_ROCE_EQ_DB_CMD_AEQ_ARMED);
>> } else {
>> - roce_set_field(eq_db.byte_4, V2_EQ_DB_TAG_M, V2_EQ_DB_TAG_S,
>> - eq->eqn);
>> + hr_reg_write(&eq_db, EQ_DB_TAG, eq->eqn);
>>
>> - roce_set_field(eq_db.byte_4, V2_EQ_DB_CMD_M, V2_EQ_DB_CMD_S,
>> - eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
>> - HNS_ROCE_EQ_DB_CMD_CEQ :
>> - HNS_ROCE_EQ_DB_CMD_CEQ_ARMED);
>> + hr_reg_write(&eq_db, EQ_DB_CMD,
>> + eq->arm_st == HNS_ROCE_V2_EQ_ALWAYS_ARMED ?
>> + HNS_ROCE_EQ_DB_CMD_CEQ :
>> + HNS_ROCE_EQ_DB_CMD_CEQ_ARMED);
>> }
>>
>> - roce_set_field(eq_db.parameter, V2_EQ_DB_CONS_IDX_M,
>> - V2_EQ_DB_CONS_IDX_S, eq->cons_index);
>> + hr_reg_write(&eq_db, EQ_DB_CI, eq->cons_index);
>>
>> hns_roce_write64(hr_dev, (__le32 *)&eq_db, eq->db_reg);
>> }
>> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> index 8387756..19f5f87 100644
>> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.h
>> @@ -943,28 +943,30 @@ struct hns_roce_v2_mpt_entry {
>> #define V2_MPT_BYTE_64_PBL_BUF_PG_SZ_S 28
>> #define V2_MPT_BYTE_64_PBL_BUF_PG_SZ_M GENMASK(31, 28)
>>
>> -#define V2_DB_TAG_S 0
>> -#define V2_DB_TAG_M GENMASK(23, 0)
>> +struct hns_roce_v2_db {
>> + __le32 data[2];
>> +};
>>
>> -#define V2_DB_CMD_S 24
>> -#define V2_DB_CMD_M GENMASK(27, 24)
>> +#define DB_FIELD_LOC(h, l) FIELD_LOC(struct hns_roce_v2_db, h, l)
>>
>> -#define V2_DB_FLAG_S 31
>> +#define DB_TAG DB_FIELD_LOC(23, 0)
>> +#define DB_CMD DB_FIELD_LOC(27, 24)
>> +#define DB_FLAG DB_FIELD_LOC(31, 31)
>> +#define DB_PI DB_FIELD_LOC(47, 32)
>> +#define DB_SL DB_FIELD_LOC(50, 48)
>> +#define DB_CQ_CI DB_FIELD_LOC(55, 32)
>> +#define DB_CQ_NOTIFY DB_FIELD_LOC(56, 56)
>> +#define DB_CQ_CMD_SN DB_FIELD_LOC(58, 57)
>> +#define EQ_DB_TAG DB_FIELD_LOC(7, 0)
>> +#define EQ_DB_CMD DB_FIELD_LOC(17, 16)
>> +#define EQ_DB_CI DB_FIELD_LOC(55, 32)
>>
>> #define V2_DB_PRODUCER_IDX_S 0
>> #define V2_DB_PRODUCER_IDX_M GENMASK(15, 0)
>>
>> -#define V2_DB_SL_S 16
>> -#define V2_DB_SL_M GENMASK(18, 16)
>> -
>> #define V2_CQ_DB_CONS_IDX_S 0
>> #define V2_CQ_DB_CONS_IDX_M GENMASK(23, 0)
>>
>> -#define V2_CQ_DB_NOTIFY_TYPE_S 24
>> -
>> -#define V2_CQ_DB_CMD_SN_S 25
>> -#define V2_CQ_DB_CMD_SN_M GENMASK(26, 25)
>> -
>> struct hns_roce_v2_ud_send_wqe {
>> __le32 byte_4;
>> __le32 msg_len;
>> @@ -1099,11 +1101,6 @@ struct hns_roce_v2_wqe_data_seg {
>> __le64 addr;
>> };
>>
>> -struct hns_roce_v2_db {
>> - __le32 byte_4;
>> - __le32 parameter;
>> -};
>> -
>> struct hns_roce_query_version {
>> __le16 rocee_vendor_id;
>> __le16 rocee_hw_version;
>> @@ -1627,15 +1624,6 @@ struct hns_roce_dip {
>> #define HNS_ROCE_V2_AEQE_SUB_TYPE_S 8
>> #define HNS_ROCE_V2_AEQE_SUB_TYPE_M GENMASK(15, 8)
>>
>> -#define V2_EQ_DB_TAG_S 0
>> -#define V2_EQ_DB_TAG_M GENMASK(7, 0)
>> -
>> -#define V2_EQ_DB_CMD_S 16
>> -#define V2_EQ_DB_CMD_M GENMASK(17, 16)
>> -
>> -#define V2_EQ_DB_CONS_IDX_S 0
>> -#define V2_EQ_DB_CONS_IDX_M GENMASK(23, 0)
>> -
>> #define HNS_ROCE_V2_AEQE_EVENT_QUEUE_NUM_S 0
>> #define HNS_ROCE_V2_AEQE_EVENT_QUEUE_NUM_M GENMASK(23, 0)
>>
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