diff options
| author | oulijun <oulijun@huawei.com> | 2017-11-10 16:55:53 +0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-11-10 12:32:43 -0500 |
| commit | 26beb85f4168dba76a197883065398a55ce11cf4 (patch) | |
| tree | 4698ae9976d10886a61cc40b5ddd8dbec863a14d /drivers/infiniband/hw | |
| parent | 0203b14c4f32b9b6e526db910844222705fc6e5f (diff) | |
RDMA/hns: Modify the usage of cmd_sn in hip08
The cmd_sn field of CQ doorbell inits for 0. It should be
increment on each first db rung after a completion Event.
if the cmd_sn of notify doorbell Adjacent two times is the
same, the hardware will distinguish it for the same notify
request and update its type according to the priority level
of next event and solicited event.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_cq.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_device.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 |
3 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c index f558f95d8827..2111b57a3489 100644 --- a/drivers/infiniband/hw/hns/hns_roce_cq.c +++ b/drivers/infiniband/hw/hns/hns_roce_cq.c @@ -156,6 +156,7 @@ static int hns_roce_cq_alloc(struct hns_roce_dev *hr_dev, int nent, } hr_cq->cons_index = 0; + hr_cq->arm_sn = 1; hr_cq->uar = hr_uar; atomic_set(&hr_cq->refcount, 1); @@ -456,6 +457,7 @@ void hns_roce_cq_completion(struct hns_roce_dev *hr_dev, u32 cqn) return; } + ++cq->arm_sn; cq->comp(cq); } diff --git a/drivers/infiniband/hw/hns/hns_roce_device.h b/drivers/infiniband/hw/hns/hns_roce_device.h index 724a5a0c1991..01d3d695cbba 100644 --- a/drivers/infiniband/hw/hns/hns_roce_device.h +++ b/drivers/infiniband/hw/hns/hns_roce_device.h @@ -347,6 +347,7 @@ struct hns_roce_cq { u32 cons_index; void __iomem *cq_db_l; u16 *tptr_addr; + int arm_sn; unsigned long cqn; u32 vector; atomic_t refcount; diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 7008fa3add80..8f719c00467b 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1440,7 +1440,7 @@ static int hns_roce_v2_req_notify_cq(struct ib_cq *ibcq, V2_CQ_DB_PARAMETER_CONS_IDX_S, hr_cq->cons_index & ((hr_cq->cq_depth << 1) - 1)); roce_set_field(doorbell[1], V2_CQ_DB_PARAMETER_CMD_SN_M, - V2_CQ_DB_PARAMETER_CMD_SN_S, 1); + V2_CQ_DB_PARAMETER_CMD_SN_S, hr_cq->arm_sn & 0x3); roce_set_bit(doorbell[1], V2_CQ_DB_PARAMETER_NOTIFY_S, notification_flag); |