The cmd_sn field of CQ doorbell should be 1 for the first
db rung. It inits for 0. It should be increment on each
first db rung after a complemention Event.
Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
---
providers/hns/hns_roce_u_hw_v2.c | 4 +++-
providers/hns/hns_roce_u_hw_v2.h | 2 ++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/providers/hns/hns_roce_u_hw_v2.c b/providers/hns/hns_roce_u_hw_v2.c
index 900387c..7777e75 100644
--- a/providers/hns/hns_roce_u_hw_v2.c
+++ b/providers/hns/hns_roce_u_hw_v2.c
@@ -444,11 +444,13 @@ static int hns_roce_u_v2_poll_cq(struct ibv_cq *ibvcq, int ne,
static int hns_roce_u_v2_arm_cq(struct ibv_cq *ibvcq, int solicited)
{
uint32_t ci;
+ uint32_t cmd_sn;
uint32_t solicited_flag;
struct hns_roce_v2_cq_db cq_db;
struct hns_roce_cq *cq = to_hr_cq(ibvcq);
ci = cq->cons_index & ((cq->cq_depth << 1) - 1);
+ cmd_sn = cq->arm_sn & HNS_ROCE_CMDSN_MASK;
solicited_flag = solicited ? HNS_ROCE_V2_CQ_DB_REQ_SOL :
HNS_ROCE_V2_CQ_DB_REQ_NEXT;
@@ -462,7 +464,7 @@ static int hns_roce_u_v2_arm_cq(struct ibv_cq *ibvcq, int solicited)
CQ_DB_PARAMETER_CQ_CONSUMER_IDX_S, ci);
roce_set_field(cq_db.parameter, CQ_DB_PARAMETER_CMD_SN_M,
- CQ_DB_PARAMETER_CMD_SN_S, 1);
+ CQ_DB_PARAMETER_CMD_SN_S, cmd_sn);
roce_set_bit(cq_db.parameter, CQ_DB_PARAMETER_NOTIFY_S, solicited_flag);
hns_roce_write64((uint32_t *)&cq_db, to_hr_ctx(ibvcq->context),
diff --git a/providers/hns/hns_roce_u_hw_v2.h b/providers/hns/hns_roce_u_hw_v2.h
index 28aab60..196ba4e 100644
--- a/providers/hns/hns_roce_u_hw_v2.h
+++ b/providers/hns/hns_roce_u_hw_v2.h
@@ -38,6 +38,8 @@
#define HNS_ROCE_V2_CQ_DB_REQ_SOL 1
#define HNS_ROCE_V2_CQ_DB_REQ_NEXT 0
+#define HNS_ROCE_CMDSN_MASK 0x3
+
/* V2 REG DEFINITION */
#define ROCEE_VF_DB_CFG0_OFFSET 0x0230
--
1.9.1
--
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